FLUID SUPPLY DEVICE FOR A TRANSMISSION FOR A MOTOR VEHICLE

Abstract

A fluid supply device for a transmission of a motor vehicle. The fluid supply device comprises at least one fluid supply device housing. At least one pump and at least one electric motor are integrated in the fluid supply device housing. The fluid supply device is configured in a modular fashion.

Claims

1. A fluid supply device for a transmission of a motor vehicle, wherein the fluid supply device comprises at least one fluid supply device housing, wherein at least one pump and at least one electric motor are integrated in the fluid supply device housing, wherein the fluid supply device is configured in a modular fashion.

2. The fluid supply device as claimed in claim 1, wherein at least two pumps are integrated in the fluid supply device housing.

3. The fluid supply device as claimed in claim 1, wherein at least one sensor is integrated in the fluid supply device housing.

4. The fluid supply device as claimed in claim 1, wherein at least one filter is integrated in the fluid supply device housing.

5. The fluid supply device as claimed in claim 1, wherein at least one electrical unit is integrated in the fluid supply device housing.

6. The fluid supply device as claimed in claim 1, wherein the fluid supply device housing has at least one housing pot and at least one housing cover, wherein the housing cover is connected to the housing pot.

7. The fluid supply device as claimed in claim 1, wherein the fluid supply device housing has at least two mutually connected housing parts.

8. The fluid supply device as claimed in claim 7, wherein the fluid supply device housing has at least one housing part comprising the electric motor and at least one housing part comprising the pump.

9. The fluid supply device as claimed in claim 1, wherein the fluid supply device comprises at least one fluid interface, wherein the fluid interface has at least one suction port and at least one pressure port, wherein the fluid interface comprises at least one O-ring for sealing the fluid interface.

10. The fluid supply device as claimed in claim 9, wherein the fluid interface has at least one connecting piece.

11. The fluid supply device as claimed in claim 9, wherein at least one of the suction port and the pressure port is oriented substantially parallel to a rotation axis of the pump.

12. The fluid supply device as claimed in claim 1, wherein the fluid supply device comprises at least one internal leakage, wherein the internal leakage has a closed fluid circuit inside at least one of the fluid supply device housing and the pump.

13. The fluid supply device as claimed in claim 12, wherein the internal leakage comprises at least one of at least one orifice, at least one valve, at least one filter and at least one sensor.

14. The fluid supply device as claimed in claim 1, wherein the fluid supply device comprises at least one external leakage.

15. The fluid supply device as claimed in claim 14, wherein the external leakage comprises at least one of at least one orifice, at least one valve, at least one filter and at least one sensor.

16. A transmission for a motor vehicle, wherein the transmission comprises at least one fluid supply device, wherein the transmission comprises at least one fluid sump, wherein the transmission comprises at least one clutch, wherein the fluid supply device comprises at least one fluid supply device housing, wherein at least one pump and at least one electric motor are integrated in the fluid supply device housing, wherein the fluid supply device is configured in a modular fashion, and wherein the fluid device is configured to supply the clutch with fluid from the fluid sump in a controlled fashion.

17. The transmission as claimed in claim 16, wherein the transmission comprises at least one transmission casing, wherein the transmission casing is formed separately from the fluid supply device housing.

18. The transmission as claimed in claim 17, wherein the transmission casing comprises at least one recess, wherein the fluid supply device is received at least partially in the recess.

19. The transmission as claimed in claim 17, wherein at least one O-ring is arranged between the transmission casing and the fluid supply device housing.

20. The transmission as claimed in claim 16, wherein the transmission is a dual clutch transmission.

21. A method for installing a fluid supply device of a transmission, wherein the transmission comprises at least one fluid supply device, at least one fluid sump, and at least one clutch, wherein the fluid supply device is configured to supply the clutch with fluid from the fluid sump in a controlled fashion, the method including the steps of: inserting the fluid supply device in a transmission casing and fluidically connecting at least one fluid interface of the fluid supply device to the transmission casing.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

[0205] Embodiments of the invention are shown as examples in the figures and explained in more detail in the description of the figures. The drawings show:

[0206] FIG. 1 a cross-sectional depiction of a first exemplary embodiment of a fluid supply device;

[0207] FIG. 2 a partial depiction of a first exemplary embodiment of a gerotor pump of a fluid supply device and/or of a transmission;

[0208] FIG. 3 a partial depiction of a second exemplary embodiment of a gerotor pump of a fluid supply device and/or of a transmission;

[0209] FIG. 4 a partial depiction of a third exemplary embodiment of a gerotor pump of a fluid supply device and/or of a transmission;

[0210] FIG. 5 a diagrammatic partial depiction of a first exemplary embodiment of a transmission;

[0211] FIG. 6 a diagrammatic partial depiction of a second exemplary embodiment of a transmission;

[0212] FIG. 7 a diagrammatic partial depiction of a third exemplary embodiment of a transmission;

[0213] FIG. 8 a diagrammatic partial depiction of a fourth exemplary embodiment of a transmission;

[0214] FIG. 9 a partial depiction of a fifth exemplary embodiment of a transmission;

[0215] FIG. 10 a cross-sectional depiction of a first exemplary embodiment of a fluid interface of a fluid supply device and/or of a transmission;

[0216] FIG. 11 a cross-sectional depiction of a second exemplary embodiment of a fluid interface of a fluid supply device and/or of a transmission;

[0217] FIG. 12 a cross-sectional depiction of a third exemplary embodiment of a fluid interface of a fluid supply device and/or of a transmission;

[0218] FIG. 13A a diagrammatic depiction of a second exemplary embodiment of a fluid supply device;

[0219] FIG. 13B a diagrammatic depiction of a third exemplary embodiment of a fluid supply device;

[0220] FIG. 14A a diagrammatic depiction of a fourth exemplary embodiment of a fluid supply device;

[0221] FIG. 14B a diagrammatic depiction of a fifth exemplary embodiment of a fluid supply device;

[0222] FIG. 15A a diagrammatic depiction of a sixth exemplary embodiment of a fluid supply device;

[0223] FIG. 15B a diagrammatic depiction of a seventh exemplary embodiment of a fluid supply device;

[0224] FIG. 16A a diagrammatic depiction of an eighth exemplary embodiment of a fluid supply device;

[0225] FIG. 16B a diagrammatic depiction of a ninth exemplary embodiment of a fluid supply device;

[0226] FIG. 17A a diagrammatic depiction of a tenth exemplary embodiment of a fluid supply device;

[0227] FIG. 17B a diagrammatic depiction of an eleventh exemplary embodiment of a fluid supply device;

[0228] FIG. 18A a diagrammatic depiction of a twelfth exemplary embodiment of a fluid supply device;

[0229] FIG. 18B a diagrammatic depiction of a thirteenth exemplary embodiment of a fluid supply device;

[0230] FIG. 19A a diagrammatic depiction of a fourteenth exemplary embodiment of a fluid supply device;

[0231] FIG. 19B a diagrammatic depiction of a fifteenth exemplary embodiment of a fluid supply device;

[0232] FIG. 20A a diagrammatic depiction of a sixteenth exemplary embodiment of a fluid supply device;

[0233] FIG. 20B a diagrammatic depiction of a seventeenth exemplary embodiment of a fluid supply device;

[0234] FIG. 21A a diagrammatic depiction of an eighteenth exemplary embodiment of a fluid supply device;

[0235] FIG. 21B a diagrammatic depiction of a nineteenth exemplary embodiment of a fluid supply device;

[0236] FIG. 22 a diagrammatic depiction of a twentieth exemplary embodiment of a fluid supply device.

EMBODIMENTS

[0237] FIG. 1 shows a first exemplary embodiment of a fluid supply device 110 for a transmission 112 of a motor vehicle.

[0238] The fluid supply device 110 for a transmission 112 of a motor vehicle has a fluid supply device housing 114. At least one pump 116 and at least one electric motor 118 are integrated in the fluid supply device housing 114. The fluid supply device 110 is configured in modular fashion.

[0239] The electric motor 118 may have for example at least one stator 117 and/or at least one rotor 119 and/or at least one electric motor shaft 121.

[0240] At least one sensor 120, in particular at least one pressure sensor 122 and/or at least one temperature sensor 124, may be integrated in the fluid supply device housing 114. The sensor 120 may for example be combined pressure-temperature sensor.

[0241] The sensor 120 may for example be an incremental sensor 125. The incremental sensor 125 may for example be configured to detect a rotational frequency of the electric motor 118 and/or of the pump 116.

[0242] At least one filter 126 may be integrated in the fluid supply device housing 114.

[0243] At least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114.

[0244] The fluid supply device 110 may have at least one cable passage 129. The cable passage 129 may for example be integrated in the fluid supply device housing 114. The cable passage 129 may for example connect at least one sensor 120 and/or the electric motor 118 to the electrical unit 128.

[0245] The fluid supply device housing 114 may have at least one housing pot 130 and at least one housing cover 132. The housing cover 132 may for example be connected, preferably permanently connected, to the housing pot 130. For example, the housing cover 132 may be welded and/or caulked to the housing pot 130. For example, the housing cover 132 may be connected to the housing pot 130 by means of at least one closing device 134. Alternatively, the housing cover 132 may be connected reversibly to the housing pot 130, in particular by means of at least one closing device 134.

[0246] The fluid supply device 110 may comprise at least one fluid interface 136. The fluid interface 136 may have at least one suction port 138, for example on a suction side, and at least one pressure port 140, for example on a pressure side. The fluid interface 136 may comprise at least one O-ring 142 for sealing the fluid interface 136.

[0247] The fluid interface 136 may have at least one, preferably two connecting pieces 144.

[0248] The fluid interface 136 may comprise at least one, preferably two connecting tubes 146.

[0249] The suction port 138 and/or the pressure port 140 may be oriented substantially parallel to a rotation axis 148 of the pump 116, or substantially perpendicular to the rotation axis 148 of the pump 116.

[0250] The fluid supply device 110 may comprise at least one internal leakage 150 and/or at least one external leakage 152. The internal leakage 150 may have a closed fluid circuit inside the fluid supply device housing 114 and/or inside the pump 116.

[0251] The internal leakage 150 and/or the external leakage 152 may comprise at least one orifice 154 and/or at least one filter 126 and/or at least one sensor 120, in particular at least one pressure sensor 122 and/or at least one temperature sensor 124.

[0252] The fluid supply device housing 114 may for example have at least one intermediate floor 156. Preferably, the fluid supply device housing 114 may have at least two intermediate floors 156 or three intermediate floors 156. The intermediate floor 156 may be configured for fixing the electric motor 118 and/or the pump 116. The intermediate floor 156 may have at least one opening, preferably a central opening, for passage of the electric motor shaft 121.

[0253] The electrical unit 128, the incremental sensor 125, the electric motor 118, the pump 116, the pressure sensor 122 and/or the temperature sensor 124, the filter 126, the orifice 154, the suction port 138 and the pressure port 140 may be arranged inside the fluid supply device housing 114, preferably in said order, from the housing cover 132 along the rotation axis 148 of the pump 116, as shown for example in FIG. 1.

[0254] FIG. 1 and FIGS. 13A to 22 show in particular exemplary embodiments of the fluid supply device 110, in which the suction port 138 and/or the pressure port 140 may be arranged for example axially, in particular substantially parallel to the rotation axis 148 of the pump 116, for example on the floor of the housing pot 130 and/or on the floor of the housing cover 132, preferably on the floor of the pump housing part 182.

[0255] FIGS. 13A to 22 show further exemplary embodiments of fluid supply devices 110 for a transmission 112 of a motor vehicle.

[0256] FIG. 13A to 22 are diagrammatic depictions of exemplary embodiments of fluid supply devices 110. The exemplary embodiments in FIGS. 13A to 22 may in particular have elements which are not shown in the figures. For example, the exemplary embodiments in FIGS. 13A to 22 may have lines, in particular fluid lines and/or electrical lines, and/or filters and/or leakages and/or orifices and/or leakages and/or sensors and/or housing parts which are not explicitly shown in the figures.

[0257] The fluid supply device 110 for a transmission 112 of a motor vehicle according to FIGS. 13A to 22 has a fluid supply device housing 114. At least one pump 116 and at least one electric motor 118 are integrated in the fluid supply device housing 114. The fluid supply device 110 is configured in modular fashion.

[0258] The electric motor 118 may for example have at least one stator 117 and/or at least one rotor 119 and/or at least one electric motor shaft 121.

[0259] At least one sensor 120, in particular at least one pressure sensor 122 and/or at least one temperature sensor 124, may be integrated in the fluid supply device housing 114. The sensor 120 may for example be a combined pressure-temperature sensor.

[0260] The sensor 120 may for example be an incremental sensor 125. The incremental sensor 125 may for example be configured to detect a rotational frequency of the electric motor 118 and/or of the pump 116.

[0261] At least one filter 126 may be integrated in the fluid supply device housing 114.

[0262] At least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114

[0263] The electrical unit 128 may preferably be a power electronics unit.

[0264] The fluid supply device 110 may have at least one cable passage 129. The cable passage 129 may for example be integrated in the fluid supply device housing 114. The cable passage 129 may for example connect the at least one sensor 120 and/or the electric motor 118 to the electrical unit 128. The cable passage 129 may have at least one cable.

[0265] The fluid supply device housing 114 may have at least one housing pot 130 and at least one housing cover 132. The fluid supply device housing 114 may for example have at least two housing pots 130 as housing parts 180. The housing pots may for example be nested together. The housing cover 132 may for example be connected, preferably permanently connected, to the housing pot 130. For example, the housing cover 132 may be welded and/or caulked to the housing pot 130. For example, the housing cover 132 may be connected to the housing pot 130 by means of a closing device 134. Alternatively, the housing cover 132 may be connected reversibly to the housing pot 130, in particular by means of at least one closing device 134.

[0266] In the fluid supply devices 110 according to the exemplary embodiments in FIGS. 13A to 22, the fluid supply device housing 114 may comprise at least two housing parts 180 connected together.

[0267] In particular, the fluid supply device housing 114 may have one housing part 180 comprising the electric motor 118, for example at least one electric motor housing part 182, and at least one housing part 180 comprising the pump 116, for example at least one pump housing part 184.

[0268] In the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 13A to 22, the fluid supply device housing 114 may have precisely one electric motor housing part 182 and precisely one pump housing part 184.

[0269] In particular in the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 13A, 13B and 15A to 22, the fluid supply device housing 114 may have at least one line housing part 186.

[0270] In particular in the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 13A, 13B, 17A to 18B, and 21A to 22, the line housing part 186 may have at least one fluid line 137.

[0271] In particular in the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 15A to 16B, and 19A to 20B, the line housing part 186 may have at least one electrical line.

[0272] In particular in the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 13A, 13B, 17A to 18B, and 21A to 22, the line housing part 186 and the pump housing part 184 may be configured as one housing part 180.

[0273] Alternatively or additionally, the fluid supply device housing 114 of the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 13A to 22 may have at least one housing part 180 comprising at least one orifice 154 and/or at least one valve 190, for example at least one valve housing part 188.

[0274] The valve housing part 188 may form at least partially an outer wall of the fluid supply device housing 114, such as for example in the exemplary embodiments of FIGS. 17A, 17B, 21A and 21B.

[0275] In principle, the valve housing part 188 may also be completely integrated in the fluid supply device housing 114, such as for example in the exemplary embodiments of FIGS. 18A to 20B and 22.

[0276] The exemplary embodiments of the fluid supply devices 110 shown in FIGS. 13A to 22 may in particular have at least one plug connector 192. The plug connector 192 may be configured to supply at least part of the fluid supply device 110 with electrical energy and/or with at least one control signal. Alternatively or additionally, the plug connector 192 may be configured to pick up at least one signal, for example a measurement signal. The plug connector 192 may for example be configured as an electrical interface.

[0277] Preferably, the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 1 and 13A to 22 may have precisely one plug connector 192.

[0278] The plug connector 192 may preferably be arranged laterally on the fluid supply device housing 114. Particularly preferably, the plug connector 192 may be arranged on a shell of the housing pot 130.

[0279] The fluid supply device 110 may comprise at least one fluid interface 136. The fluid interface 136 may have at least one suction port 138, for example on a suction side, and at least one pressure port 140, for example on a pressure side. The fluid interface 136 may comprise at least one O-ring 142 for sealing the fluid interface 136.

[0280] The fluid interfaces 136 shown in the exemplary embodiments in FIGS. 13A to 22 may preferably comprise two O-rings 142 for sealing the fluid interface 136. The two O-rings 142 may preferably have different diameters.

[0281] The fluid interface 136 may have at least one connecting piece 144, preferably two connecting pieces 144. For example, the connecting piece 144 may taper towards the end remote from the fluid supply device housing 114. The connecting piece 144 may for example have two pipes with different diameters. The connecting piece 144 may have a smaller diameter at the end remote from the fluid supply device housing 114 than at the outlet of the connecting piece 144 from the fluid supply device housing 114.

[0282] The O-ring 142 located at the end of the connecting piece 144 may preferably have a smaller diameter than the O-ring 142 at the outlet of the connecting piece 144 from the fluid supply device housing 114.

[0283] The fluid interface 136 may comprise at least one, preferably two connecting tubes 146.

[0284] The suction port 138 and/or the pressure port 140 may preferably be oriented substantially parallel to a rotation axis 148 of the pump 116.

[0285] The fluid supply device 110 may comprise at least one internal leakage 150 and/or at least one external leakage 152. The internal leakage 150 may have a closed fluid circuit inside the fluid supply device housing 114 and/or inside the pump 116.

[0286] The internal leakage 150 and/or the external leakage 152 may comprise at least one orifice 154 and/or at least one valve 190 and/or at least one filter 126 and/or at least one sensor 120, in particular at least one pressure sensor 122 and/or at least one temperature sensor 124.

[0287] The fluid supply device housing 114 may for example have at least one intermediate floor 156. Preferably, the fluid supply device housing 114 may have at least two intermediate floors 156 or three intermediate floors 156. The intermediate floor 156 may be configured for fixing the electric motor 118 and/or the pump 116. The intermediate floor 156 may have at least one opening, preferably a central opening, for passage of the electric motor shaft 121.

[0288] The exemplary embodiment in FIG. 13A differs from the exemplary embodiment in FIG. 13B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 13B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 13B.

[0289] In the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 13A and 13B, the fluid supply device housing 114 may in particular comprise at least one electric motor housing part 182 and at least one pump housing part 184. At least one fluid line 137 may be integrated in the fluid supply device housing 114.

[0290] The pump 116 and/or the at least one fluid line 137 and/or the at least one temperature sensor 124 and/or the at least one pressure sensor 122, preferably a combined temperature-pressure sensor, and/or the at least one orifice 154 may be integrated in the pump housing part 184.

[0291] The fluid interface 136 may preferably be arranged on the pump housing part 184. The pump housing part 184 may preferably have the form of a cylinder with a lateral arm. In particular, the temperature sensor 124 and/or the pressure sensor 122 and/or the orifice 154 and/or at least partially the fluid lines 137 may be integrated in the arm.

[0292] The exemplary embodiment in FIG. 14A differs from the exemplary embodiment in FIG. 14B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 14B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 14B.

[0293] In the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 14A and 14B, the fluid supply device housing 114 may in particular comprise at least one electric motor housing part 182 and at least one pump housing part 184.

[0294] The pump 116 may preferably be integrated in the pump housing part 184.

[0295] Preferably, the electric motor 118 and/or at least one sensor 120, preferably the incremental sensor 125, may be integrated in the electric motor housing part 182.

[0296] The pump housing part 184 and the electric motor housing part may preferably be configured substantially rotationally symmetrically to the rotation axis 148 of the pump 116. However, for example the housing cover 132 may be non-rotationally symmetrical at least at one radial side, but have a lateral cable passage 129. Furthermore, for example at least one plug connector 192 and/or at least one sensor 120, for example at least one temperature sensor 124 and/or at least one pressure sensor 122, preferably a combined temperature-pressure sensor, may be arranged laterally on the fluid supply device housing 114, e.g. on the housing cover 132. The plug connector 192 and/or the temperature sensor 124 and/or the pressure sensor 122, preferably the combined temperature-pressure sensor, may be integrated fully or partly in the housing cover 132. Preferably, the plug connector 192 may be arranged externally on the housing cover 132, and the temperature sensor 124 and/or the pressure sensor 122, preferably the combined temperature-pressure sensor, may be partially integrated in the housing cover 132 and be partially arranged outside the housing cover 132.

[0297] The incremental sensor 125 and the combined temperature-pressure sensor may in particular be connected to the plug connector 192 via at least one cable passage 129.

[0298] The exemplary embodiment in FIG. 15A differs from the exemplary embodiment in FIG. 15B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 15B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 15B.

[0299] In the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 15A and 15B, the fluid supply device housing 114 may in particular comprise at least one electric motor housing part 182 and at least one pump housing part 184 and at least one line housing part 186.

[0300] The at least one pump 116 and/or the at least one fluid line 137 and/or the at least one temperature sensor 124 and/or the at least one pressure sensor 122, preferably a combined temperature-pressure sensor, and/or the at least one orifice 154 may be at least partially integrated in the pump housing part 184.

[0301] The fluid interface 136 may preferably be arranged on the pump housing part 184. The pump housing part 184 may preferably have the form of a cylinder. The pump housing part 184 may preferably have a lateral opening. Preferably the sensor 120, in particular the combined temperature-pressure sensor 120, may be arranged in the lateral opening. The lateral opening of the pump housing part 184 may be connected to the housing cover 132 by means of the line housing part 186.

[0302] The combined temperature-pressure sensor may be arranged partially in the pump housing part 184 and partially in the line housing part 186.

[0303] The line housing part 186 may preferably have an electrical line between the sensor 120, in particular the combined temperature-pressure sensor, and the plug connector 192. The plug connector 192, like the combined temperature-pressure sensor, may preferably be arranged laterally to the rotation axis 148 of the pump 116.

[0304] In particular, an opening may be present between the electric motor housing part 182 and/or the line housing part 186 and/or the pump housing part 184 and/or the housing cover 132.

[0305] The fluid supply device 110 according to FIGS. 15A and 15B may in particular have an external leakage 152. The external leakage 152 may in particular comprise an outflow of fluid from the fluid supply device housing 114, in particular from the pump housing part 184. The fluid outflow may preferably be arranged in the axial direction.

[0306] Preferably, a connection of the electrical line to the sensor 120, in particular the combined temperature-pressure sensor, may be arranged parallel to the rotation axis 148, i.e. axially, in particular on the side facing away from the electric motor 118.

[0307] In particular, the temperature sensor 124 and/or the pressure sensor 122 and/or the orifice 154 and/or at least partially the fluid lines 137 may be integrated in the arm.

[0308] The exemplary embodiment in FIG. 16A differs from the exemplary embodiment in FIG. 16B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 16B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 16B.

[0309] The exemplary embodiments of the fluid supply devices 110 shown in FIGS. 16A and 16B differ from the exemplary embodiment in FIGS. 16A and 16B in particular in that the exemplary embodiments of the fluid supply devices 110 according to the invention shown in FIGS. 16A and 16B have no external leakage 152 and no orifice 154, in particular in the pump housing part.

[0310] The line housing part 186 may protrude in the axial direction over the pump housing part 184. A connection of the electrical line to the sensor 120, in particular the combined temperature-pressure sensor, may preferably be arranged parallel to the rotation axis 148, i.e. axially, in particular on the side facing away from the electric motor 118.

[0311] The exemplary embodiment in FIG. 17A differs from the exemplary embodiment in FIG. 17B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 17B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 17B.

[0312] The exemplary embodiments shown in FIGS. 17A and 17B preferably have no pressure sensor 122 and/or no temperature sensor 124. In principle however, these exemplary embodiments too could have at least one pressure sensor 122 and/or at least one temperature sensor 124.

[0313] In the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 17A and 17B, the fluid supply device housing 114 may comprise in particular at least one electric motor housing part 182 and at least one pump housing part 184 and at least one valve housing part 188.

[0314] The at least one pump 116 and/or the at least one fluid line 137 may be integrated in the pump housing part 184.

[0315] Preferably, the fluid interface may be arranged on the pump housing part 184, in particular on an axial end facing away from the electric motor 118. The pump housing part 184 may preferably take the form of a cylinder with a bulge on one side. The pump housing part 184 may preferably have an axial opening at the bulge. Preferably, the valve 190 and/or the sensor 120, in particular the combined temperature-pressure sensor, may be arranged in the axial opening. The pump housing part 184 may be connected to the housing cover 132 via the valve housing part 188.

[0316] The combined temperature-pressure sensor and/or the valve 190 may be arranged partially in the pump housing part 184 and partially in the valve housing part 188.

[0317] The housing cover 132 may preferably have an electrical line between the valve 190 and/or a sensor 120, in particular the combined temperature-pressure sensor, and the plug connector 192. The plug connector 192, like the valve 190 and/or the combined temperature pressure sensor, may preferably be arranged laterally to the rotation axis 148 of the pump 116.

[0318] For example, the fluid supply device 110 may be configured without a temperature sensor 124 and/or without a pressure sensor 122 and/or without a combined temperature-pressure sensor.

[0319] In particular, an opening may be present between the electric motor housing part 182 and/or the valve housing part 188 and/or the pump housing part 184 and/or the housing cover 132.

[0320] The fluid supply device 110 according to FIGS. 17A and 17B may in particular have an internal leakage 150. The internal leakage 150 may in particular comprise the valve 190, in particular as a controllable internal leakage 150, and/or an orifice 154.

[0321] The exemplary embodiment in FIG. 18A differs from the exemplary embodiment in FIG. 18B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 18B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 18B.

[0322] In the exemplary embodiments of the fluid supply devices 110 shown in FIGS. 18A and 18B, the fluid supply device housing 114 may comprise in particular at least one electric motor housing part 182 and at least one pump housing part 184 and at least one valve housing part 188.

[0323] At least one fluid line 137 may be integrated in the fluid supply device housing 114, preferably in the pump housing part 184.

[0324] The valve housing part 188 may be integrated at least partially in the housing cover 132 and/or in the pump housing part 184.

[0325] The pump 116 and/or the at least one fluid line 137 may be integrated in the pump housing part 184.

[0326] Preferably, the fluid interface 136 may be arranged on the pump housing part 184. The pump housing part 184 may preferably have the form of a cylinder with a lateral arm. In particular, the temperature sensor 124 and/or the pressure sensor 122, preferably the combined temperature-pressure sensor, and/or the valve 190, may be at least partially integrated in the arm.

[0327] The valve 190 may for example be configured to perform the function of a controllable orifice 154 of an internal leakage 150.

[0328] The exemplary embodiments of the fluid supply devices 110 shown in FIGS. 18A and 18B may in principle be configured as those of the exemplary embodiments in FIGS. 13A and 13B, wherein the orifice 154 of FIGS. 18A and 18B may be replaced by the valve 190 as an adjustable orifice 154.

[0329] The exemplary embodiment in FIG. 19A differs from the exemplary embodiment in FIG. 19B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 19B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 19B.

[0330] The exemplary embodiments according to FIGS. 19A and 19B may be configured as the exemplary embodiments in FIGS. 18A and 18B, wherein the fluid supply device housing 114 may additionally have a line housing part 186. The sensor 120, in particular the combined temperature-pressure sensor, may preferably not be arranged partially in the housing cover 132 and partially in the pump housing part 184, as in FIGS. 18A and 18B, but be partially integrated in the line housing part 186 and partially in the pump housing part 184.

[0331] The exemplary embodiment in FIG. 20A differs from the exemplary embodiment in FIG. 20B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 20B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 20B.

[0332] The exemplary embodiments in FIGS. 20A and 20B may differ from the exemplary embodiments in FIG. 19A or 20A in particular in that the sensor 120, in particular the temperature sensor 124 and/or the pressure sensor 122, preferably the combined temperature-pressure sensor, is arranged such that the connection of the sensor 120, in particular of the temperature sensor 124 and/or of the pressure sensor 122, preferably of the combined temperature-pressure sensor, to the electrical line is arranged not radially but axially, and/or the sensor 120, in particular the temperature sensor 124 and/or the pressure sensor 122, preferably the combined temperature-pressure sensor, may have no direct connection to the fluid line 137.

[0333] The exemplary embodiment in FIG. 21A differs from the exemplary embodiment in FIG. 21B in particular in that at least one electrical unit 128, for example a control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 21B. Particularly preferably, a power electronics unit may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 21B.

[0334] The exemplary embodiments of FIGS. 21A and 21B may in principle be configured like the exemplary embodiments in FIGS. 17A and 17B, wherein the exemplary embodiment in FIGS. 21A and 21B may additionally, preferably, have at least one temperature sensor 124 and/or at least one pressure sensor 122, preferably at least one combined temperature-pressure sensor, wherein this sensor 120 may preferably be integrated at least partially in the valve housing. In the exemplary embodiment of a fluid supply device 110 according to the invention shown in FIG. 22, the pump housing part 184 and/or the line housing part 186 may preferably have two pumps 116 and/or two fluid lines 137.

[0335] In the exemplary embodiment of a fluid supply device 110 according to the example shown in FIG. 22, the fluid supply device housing 114 may have precisely two electric motor housing parts 182 and precisely one pump housing part 184 and precisely two valve housings.

[0336] The exemplary embodiment in FIG. 22 may in particular have two valve housing parts 188.

[0337] At least two pumps 116 and at least two electric motors 118 may be integrated in the fluid supply device housing 114 of the exemplary embodiment shown in FIG. 22. Preferably, precisely two pumps 116 and precisely two electric motors 118 may be integrated in the fluid supply device housing 114 of the exemplary embodiment shown in FIG. 22.

[0338] Preferably, precisely one electrical unit 128, for example precisely one control unit, may be integrated in the fluid supply device housing 114 of the exemplary embodiment in FIG. 22. The control unit may be configured to actuate all pumps 116 and/or all electric motors 118, preferably two pumps 116 and/or two electric motors 118. The control unit may furthermore be configured to actuate all valves 190, preferably two valves 190. The electrical unit 128 may preferably be a power electronics unit.

[0339] The fluid supply device 110 according to the exemplary embodiment in FIG. 22 may preferably have two fluid interfaces 136.

[0340] In the exemplary embodiment of a fluid supply device 110 shown in FIG. 22, the two electric motors 118 and/or the two electric motor housing parts 182 and/or the two valves 190 and/or the two fluid interfaces 136 and/or the two sensors 120, preferably the two combined temperature-pressure sensors, and/or the two pumps 116, may be arranged symmetrically to a line parallel to the axis. An asymmetry of the fluid supply device 110 may preferably be created in that the fluid supply device 110 preferably has only one plug connection 192, which in particular may be arranged laterally on the housing cover 132.

[0341] In a further aspect, a transmission 112 for a motor vehicle is proposed. The transmission 112 comprises at least one fluid supply device 110 as described above. The transmission 112 comprises at least one fluid sump 162. The transmission 112 comprises at least one clutch 178. The fluid supply device 110 is configured to supply fluid from the fluid sump 162 to the clutch 178 in a controlled fashion.

[0342] The pump 116 may for example be a gerotor pump. The pump 116 may comprise at least one external rotor 115 and at least one internal rotor 113. The internal rotor 113 a for example be driven by the electric motor 118. The external rotor 115 may for example be driven by a rotation of the internal rotor 113. The pump 116 may furthermore comprise at least one suction nodule 123 and/or at least one pressure nodule 127. The suction nodule 123 and/or the pressure nodule 127 may preferably be arranged rotationally fixedly, for example relative to the fluid supply device housing 114. The suction nodule 123 and/or the pressure nodule 127 may be nodular pump cavities. The suction nodule 123 may for example be connected to the suction port 138. The pressure nodule 127 may for example be connected to the pressure port 140.

[0343] Preferably, the pump 116 may have at least the internal leakage 150. For example, the orifice 154 and/or an orifice function may be integrated in the pump 116. FIGS. 2, 3 and 4 show depictions of various pumps 116 of exemplary embodiments of the fluid supply device 110, and/or of the transmission 112. FIGS. 2, 3 and 4 show in particular various possibilities for integrating the internal leakage 150 and/or the orifice 154 and/or the orifice function in the pump 116. Here, an orifice function and/or the internal leakage 150 may be implemented by higher tolerances and/or greater spacing dimensions. For example, the pump 116 may have a greater axial play, as shown in FIG. 2, and/or a greater radial play and/or a greater head play, as shown in FIG. 3, and/or a connection 158 between the suction nodule 123 and the pressure nodule 127, as shown in FIGS. 4 and 7. The suction nodule 123 and/or the pressure nodule 127 may preferably have a narrow end and a wide end. The connection 158 between the suction nodule 123 and the pressure nodule 127 may preferably be arranged between the narrow end of the suction nodule 123 and the narrow end of the pressure nodule 127.

[0344] The suction nodule 123 and/or the pressure nodule 127 may in particular have at least one groove and/or at least one chamfer in the nodule geometry.

[0345] For example, the pump 116 may have an axial play and/or a radial play and/or a head play of 0.001 mm to 1 mm, preferably of 0.01 mm to 0.5 mm, particularly preferably of 0.02 mm to 0.1 mm.

[0346] Alternatively or additionally, an internal leakage 150 and/or an orifice function may be implemented by a lateral outflow and/or by a radial cooling outlet.

[0347] FIGS. 5 to 8 show diagrammatic partial depictions of exemplary embodiments of the transmission 112. In the context of the present invention, the schematic symbol for an orifice 154 may mean both an orifice plate 154 and an equivalent circuit for the orifice function, for example an internal leakage 150. The transmissions 112 may have at least one orifice plate 154 and/or at least one orifice function. FIGS. 9 to 12 show partial depictions of exemplary embodiments of the transmission 112 as cross-sectional drawings.

[0348] The transmission 112 may comprise at least one transmission casing 160. In FIGS. 5 to 8, the transmission 112 is depicted only partially diagrammatically, in particular with a fluid sump 162. The transmission casing 160 may be configured preferably separately from the fluid supply device housing 114.

[0349] The transmission casing 160 may comprise at least one recess 164, wherein the fluid supply device 110 may be received at least partially in the recess 164.

[0350] At least one O-ring 142, preferably two O-rings 142, may be arranged between the transmission casing 160 and the fluid supply device housing 114.

[0351] The transmission casing 160 may have a device 166 for cooling the electric motor 118.

[0352] The fluid supply device housing 114 may be fixed to the transmission casing 160 by means of at least one fixing device 168.

[0353] The transmission casing 160 may comprise at least one bore 170 for a pressure port 140 and/or at least one bore 170 for a suction port 138.

[0354] Outside the fluid supply device housing 114, the transmission 112 may comprise at least one sensor 120, in particular at least one pressure sensor 122 and/or at least one temperature sensor 124, and/or at least one filter 126 and/or at least one leakage 172.

[0355] The fluid supply device 110 and/or the transmission 112 may have at least one leakage 172, in particular at least one internal leakage 150 and/or at least one external leakage 152.

[0356] FIG. 5 shows part of an exemplary embodiment of a transmission 112, wherein the transmission 112 has a leakage 172. The leakage 172 may here be configured as a fluid line 137 by a line portion between the pump 116 and the clutch 178 to the fluid sump 162. The line portion may preferably be arranged outside the fluid supply device 110. The fluid line 137 may have at least one filter 126 and/or at least one orifice 154. The transmission 112 shown in FIG. 5 may in particular comprise a fluid supply device housing 114 in which an electric motor 118 and a pump 116 may be integrated.

[0357] FIGS. 6 and 7 show exemplary embodiments of the fluid supply device 110 and/or the transmission 112 with an internal leakage 150, in particular inside the fluid supply device 110 and/or inside the fluid supply device housing 114.

[0358] FIG. 6 shows an internal leakage 150, wherein the leakage 172 may be integrated in the pump 116, for example by a fluidic short-circuit inside the pump 116. The transmission 112 shown in FIG. 6 may in particular comprise a fluid supply device housing 114 which integrates an electric motor 118 and a pump 116 and a sensor 120, in particular a pressure sensor 122, and an internal leakage 150 in the pump 116.

[0359] FIG. 7 shows an internal leakage 150, wherein the leakage 172 is integrated in the fluid supply device housing 114, for example by a fluidic short-circuit in the fluid supply device housing 114. The transmission 112 shown in FIG. 7 may in particular comprise a fluid supply device housing 114 which integrates an electric motor 118 and a pump 116 and a sensor 120, in particular a pressure sensor 122, and an internal leakage 150.

[0360] FIG. 8 shows an exemplary embodiment of the fluid supply device 110 and/or the transmission 112 with an external leakage 152. The external leakage 152 may in particular lead out of the fluid supply device housing 114. For example, a volume flow of fluid may be returned externally to the oil sump and/or used. The transmission 112 shown in FIG. 6 may in particular comprise a fluid supply device housing 114 which integrates an electric motor 118 and a pump 116 and a sensor 120, in particular a pressure sensor 122, and an external leakage 152, in particular an external leakage 152 with a filter 126 and an orifice 154.

[0361] The transmissions 112 shown in FIGS. 5 to 8 may in particular have at least two filters 126, preferably a high-pressure filter 174 and a suction filter 176, which may preferably be arranged inside the transmission casing 160 and outside the fluid supply device housing 114.

[0362] FIG. 9 shows as an example a partial depiction of a transmission 112, wherein the transmission 112 may have at least one device 166 for cooling, preferably a radial device 166 for cooling the electric motor 118, and at least one axial suction port 138 and at least one axial pressure port 140. The transmission 112 shown in FIG. 9 may in particular comprise a fluid supply device 110 with an electric motor 118 and a pump 116 and an orifice 154 and a pressure sensor 122 and a temperature sensor 124, preferably integrated in the fluid supply device housing 114.

[0363] FIGS. 10, 11 and 12 show exemplary fluid interfaces 136 of a fluid supply device 110 and/or a transmission 112. The fluid interface 136 may in particular be configured to seal, in particular to seal fluidically, a fluidic connection 158 between the fluid supply device housing 114 and the transmission casing 160. The fluid interfaces 136 in FIGS. 10, 11 and 12 may preferably have a suction port 138 and a pressure port 140.

[0364] FIG. 10 shows a fluid interface 136 which may comprise, at the suction port 138 and/or at the pressure port 140, at least one or at least two O-rings 142 for sealing the fluid interface 136. FIG. 10 shows in particular a radial seal. FIG. 10 shows in particular a fluid interface 136 which may have a connecting piece 144 and a connecting tube 146. The connecting tube 146 may for example be an adapter tube. The O-ring 142 may preferably be arranged at least partially in a groove of the tube and/or of the connecting piece 144. The O-ring 142 may preferably be arranged around the connecting piece 144 and/or around the tube. The O-rings 142 may preferably be arranged substantially perpendicular to a rotation axis 148 of the pump 116. The suction port 138 and/or the pressure port 140 may be oriented substantially parallel to a rotation axis 148 of the pump 116.

[0365] FIG. 11 shows a fluid interface 136 which may comprise, at the suction port 138 and/or at the pressure port 140, at least one O-ring 142 for sealing the fluid interface 136. The O-ring 142 may preferably be arranged at least partially in a groove of the fluid supply device housing 114. The O-ring 142 may preferably be arranged around the pressure port 140 and/or around the suction port 138. FIG. 11 shows in particular a fluid interface 136 which may have no connecting piece 144 and no connecting tube 146. The O-rings 142 may preferably be arranged substantially perpendicular to a rotation axis 148 of the pump 116. FIG. 11 shows in particular a fluid interface 136 which may comprise at least one line in the transmission casing 160. The line in the transmission casing 160 may for example be formed at least partially conical at the fluid supply device housing 114, wherein the line in the transmission casing 160 may have a larger diameter at the fluid supply device housing 114 than at a point remote from the fluid supply device housing 114. The suction port 138 and/or the pressure port 140 may be oriented substantially parallel to a rotation axis 148 of the pump 116. FIG. 11 shows in particular a front side seal, for example a housing pot seal, against the transmission casing 160.

[0366] FIG. 12 shows a fluid interface 136 which may comprise, at the suction port 138 and/or at the pressure port 140, at least two O-rings 142 for sealing the fluid interface 136. The fluid supply device housing 114 may have at least two grooves, preferably four grooves. The O-rings 142 may be arranged preferably at least partially in the grooves of the fluid supply device housing 114. The O-rings 142 may preferably be arranged around the fluid supply device housing 114. The O-rings 142 may preferably be arranged substantially perpendicular to a rotation axis 148 of the pump 116. FIG. 12 shows in particular a fluid interface 136 which may have no connecting piece 144 and no connecting tube 146. FIG. 11 shows in particular a fluid interface 136 which may comprise at least one line in the transmission casing 160. The line in the transmission casing 160 may for example be formed at least partially conical at the fluid supply device housing 114, wherein the line in the transmission casing 160 may have a larger diameter at the fluid supply device housing 114 than at a point remote from the fluid supply device housing 114. The suction port 138 and/or the pressure port 140 may be oriented substantially perpendicular to a rotation axis 148 of the pump 116. FIG. 12 shows in particular a radial seal with radial suction port 138 and radial pressure port 140.

[0367] Preferably, at least one filter 126, preferably a suction filter 176, may be arranged between the fluid sump 162 and the fluid supply device 110, as shown for example in FIGS. 5 to 8. For example, at least one filter 126, in particular a high-pressure filter 174, may be arranged between the fluid supply device 110 and the clutch 178, as shown for example in FIGS. 6 to 8. For example, the sensor 120, in particular the pressure sensor 122 and/or the temperature sensor 124, may be arranged between the pump 116 and the clutch 178 and/or the filter 126, in particular the high-pressure filter 174, wherein the sensor 120, in particular the pressure sensor 122 and/or the temperature sensor 124, may be arranged inside or outside the fluid supply device housing 114.

[0368] In a further aspect, a method is proposed for installing a fluid supply device 110 of a transmission 112 as described above. The fluid supply device 110 is inserted in a transmission casing 160 and at least one fluid interface 136 of the fluid supply device 110 is fluidically connected to the transmission casing 160.

LIST OF REFERENCE NUMERALS

[0369] 110 Fluid supply device [0370] 112 Transmission [0371] 113 Internal rotor [0372] 114 Fluid supply device housing [0373] 115 External rotor [0374] 116 Pump [0375] 117 Stator [0376] 118 Electric motor [0377] 119 Rotor [0378] 120 Sensor [0379] 121 Electric motor shaft [0380] 122 Pressure sensor [0381] 123 Suction nodule [0382] 124 Temperature sensor [0383] 125 Incremental sensor [0384] 126 Filter [0385] 127 Pressure nodule [0386] 128 Electrical unit [0387] 129 Cable passage [0388] 130 Housing pot [0389] 132 Housing cover [0390] 134 Closing device [0391] 136 Fluid interface [0392] 137 Fluid line [0393] 138 Suction port [0394] 140 Pressure port [0395] 142 O-ring [0396] 144 Connecting piece [0397] 146 Connecting tube [0398] 148 Rotation axis of pump [0399] 150 Internal leakage [0400] 152 External leakage [0401] 154 Orifice [0402] 156 Intermediate floor [0403] 158 Connection [0404] 160 Transmission casing [0405] 162 Fluid sump [0406] 164 Recess [0407] 166 Device [0408] 168 Fixing device [0409] 170 Bore [0410] 172 Leakage [0411] 174 High-pressure filter [0412] 176 Suction filter [0413] 178 Clutch [0414] 180 Housing part [0415] 182 Electric motor housing part [0416] 184 Pump housing part [0417] 186 Line housing part [0418] 188 Valve housing part [0419] 190 Valve [0420] 192 Plug connector