FLEXIBLE MOTOR PUMP SYSTEM

Abstract

An apparatus for making available hydraulic energy, in particular in a chassis system of a vehicle, including at least one motor-pump group and an electronic unit for regulating the motor-pump group. The motor-pump group is arranged in a motor-pump casing that forms a motor-pump housing or is a part of a motor-pump housing. Th electronic unit is arranged in an electronic-unit casing that forms an electronic-unit housing or is a part of an electronic-unit housing, and the electronic unit and the motor-pump group are electrically connected via a supply string.

Claims

1. An apparatus for making available hydraulic energy, in particular in a chassis system of a vehicle, comprising a motor-pump group, comprising a hydraulic pump and an electric motor for driving the hydraulic pump, and an electronic unit for regulating the motor-pump group, wherein the motor-pump group is arranged in a motor-pump casing that forms a motor-pump housing or is a part of a motor-pump housing, wherein the electronic unit is arranged in an electronic-unit casing that forms an electronic-unit housing or is a part of an electronic-unit housing, and wherein the electronic unit and the motor-pump group are electrically connected via a supply string.

2. The apparatus according to claim 1, wherein the motor-pump casing and the electronic-unit casing correspond to each other and/or are set up to create partly or completely a common housing.

3. An apparatus according to claim 1, the motor-pump group of which forms a first motor-pump group, wherein the apparatus further comprises a second motor-pump group, comprising a second hydraulic pump and a second electric motor for driving the second hydraulic pump, wherein the second motor-pump group is arranged in a second motor-pump casing and wherein the electronic unit forms a common electronic unit for regulating the first and the second motor-pump group, and wherein the second motor-pump casing forms a second motor-pump housing or is a part of a second motor-pump housing, and wherein the electronic unit and the second motor-pump group are electrically connected via a second supply string, or wherein the second motor-pump casing is a part of the electronic-unit housing and/or wherein the electronic-unit housing comprises the electronic-unit casing and the second motor-pump casing, preferably consists thereof.

4. The apparatus according to claim 3, wherein the first motor-pump casing, the second motor-pump casing and the electronic-unit casing correspond to each other and/or are set up to create a common housing partly or completely.

5. The apparatus according to claim 3, further comprising a third motor-pump group, comprising a third hydraulic pump and a third electric motor for driving the third hydraulic pump, wherein the third motor-pump group is arranged in a third motor-pump casing that forms a third motor-pump housing or is a part of a third motor-pump housing, and wherein the electronic unit and the third motor-pump group are electrically connected via a third supply string, and further comprising a fourth motor-pump group, comprising a fourth hydraulic pump and a fourth electric motor for driving the fourth hydraulic pump, wherein the fourth motor-pump group is arranged in a fourth motor-pump casing that forms a fourth motor-pump housing or is a part of a fourth motor-pump housing, and wherein the electronic unit and the fourth motor-pump group are electrically connected via a fourth supply string, and wherein the electronic unit forms a common electronic unit for regulating the first, second, third and fourth motor-pump groups, and wherein preferably the first, second, third and fourth motor-pump groups are configured identically.

6. The apparatus according to claim 1, wherein the at least one supply string is pluggable and wherein preferably a supply connector is arranged on an outer side of the electronic-unit housing and/or the respective motor-pump housing.

7. The apparatus according to claim 1, wherein the at least one supply string has at least or exactly three motor-phase supply lines, and preferably two or more signal supply lines.

8. The apparatus according to claim 1, wherein the at least one motor-pump housing is constructed in single-piece or multi-piece manner, preferably comprising a single-piece or multi-piece motor casing and a single-piece or multi-piece pump casing or consisting thereof.

9. The apparatus according to claim 1, wherein the at least one motor-pump group is hydraulically connected to a shock absorber and is preferably arranged on the shock absorber and/or connected via hydraulic lines.

10. A chassis axle comprising a first motor-pump group, comprising a first hydraulic pump and a first electric motor for driving the first hydraulic pump, wherein the first motor-pump group is arranged in a first motor-pump casing that forms a first motor-pump housing or is a part of a first motor-pump housing, a second motor-pump group, comprising a second hydraulic pump and a second electric motor for driving the second hydraulic pump, wherein the second motor-pump group is arranged in a second motor-pump casing that forms a second motor-pump housing or is a part of a second motor-pump housing, a first and a second hydraulically regulatable shock absorber, which are hydraulically connected respectively to the first and a second motor-pump group, wherein the first and the second motor-pump group each have a supply connector, which is preferably arranged on the respective motor-pump casing and/or at the end of a supply string or at the end of a supply string section, and wherein the chassis axle is preferably set up as a part of an apparatus according to claim 2.

11. The chassis axle according to claim 10, wherein the chassis axle is pre-assembled and/or the motor-pump casings and/or motor-pump units are fixedly connected to the chassis axle or the respective shock absorbers, and/or wherein the motor-pump groups are connected to the respective shock absorbers respectively via hydraulic lines or the motor-pump casings or the motor-pump housings are arranged on and/or attached to the respective shock absorber or a damper cylinder of the respective shock absorber.

12. A chassis system for a first and a second vehicle axle with respectively two hydraulically regulatable shock absorbers, comprising: an apparatus according to claim 5, wherein the four motor-pump groups or the hydraulic pumps of the four motor-pump groups are connected respectively to a shock absorber.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The invention will hereinafter be described by way of example with reference to the attached drawings. The drawings are merely schematic representations and the invention is not limited to the specific represented embodiment examples.

[0081] FIG. 1 shows a perspective exploded view of a motor-pump system with one motor-pump group,

[0082] FIG. 2 shows a perspective exploded view of a motor-pump system with two motor-pump groups,

[0083] FIG. 3 shows a schematic view of a chassis axle with a motor-pump system with two motor-pump groups,

[0084] FIG. 4 shows a schematic view of a chassis system with a motor-pump system with four motor-pump groups, and

[0085] FIG. 5A shows a schematic views of a chassis system with a motor-pump system.

[0086] FIG. 5B shows a schematic views of a chassis system with a motor-pump system.

[0087] FIG. 5C shows a schematic views of a chassis system with a motor-pump system.

[0088] FIG. 5D shows a schematic views of a chassis system with a motor-pump system.

DETAILED DESCRIPTION

[0089] In FIG. 1 a perspective exploded view is represented of an embodiment example of an apparatus 1 or of a motor-pump system 1 for making available hydraulic energy, in particular in a chassis system 50 of a vehicle with a motor-pump group 21a. The motor-pump system 1 comprises an electronic-unit housing 10, a motor-pump housing 20 and a supply string 30. The electronic-unit housing 10 is joined together from an electronic-unit casing 11 and a partial casing 12. The electronic-unit housing 11 spans an interior space which accommodates an electronic unit 11a (comprising electronic components, power electronics, circuit boards, etc.). The electronic-unit casing 11 here comprises a bus interface 13, a supply voltage interface 14 and a casing lead-through 33 for a supply string section 31 of a supply string 30.

[0090] The motor-pump housing 20 is joined together from a motor-pump casing 21 and partial casings 22 and 23. The motor-pump casing 21 spans an interior space which accommodates the motor-pump group 21a. The motor-pump casing 21 in the embodiment example is composed of a single-piece motor casing 211 and a multi-piece pump casing 212, which accommodate the electric motor or electric motor generator 211a and the hydraulic pump 212a, respectively. The electric motor 211a and the pump 212a are fixedly connected via a not represented rotatable motor shaft. Further, the pump casing 212 has on the axial front side hydraulic connectors for connecting, for example, a shock absorber 54, while the motor casing 211 has a casing lead-through 33 for a further supply string section 31 of a supply string 30.

[0091] The supply string 30 in the represented embodiment example is pluggable and for this purpose is composed of two supply string sections 31 which can be connected via supply connectors 32.

[0092] In the represented embodiment example the electronic-unit casing 11, the motor-pump casing 21 and the partial casing 22 (while omitting the partial casings 12 and 23) can also be joined together to form a common housing, so that a compact motor-pump unit is created.

[0093] In FIG. 2 an embodiment example is represented of an apparatus 2 or of a motor-pump system 2 which comprises two motor-pump groups 21a. The motor-pump system is composed of an electronic-unit housing 10, two motor-pump housings 20 and two supply strings 30 which respectively connect a motor-pump housing 20 or a motor-pump group 21 to the electronic-unit housing 10 or the electronic unit 11a. The electronic unit 11a here forms a common electronic unit for both motor-pump groups 21a.

[0094] Further, in the embodiment example represented in FIG. 2 (instead of the casing lead-throughs 33 shown in the embodiment example in FIG. 1) there are provided supply connectors 32 respectively in the motor-pump casings 21 and in the electronic-unit casing 11, via which supply connectors respectively one supply string 30 with corresponding supply connectors 32 on both ends produces a pluggable electric supply connection between the electronic unit 11a and each of the motor-pump groups 21a. In a not represented embodiment example one or both supply strings 30 are configured like in the embodiment example of FIG. 1.

[0095] In the represented embodiment example the two motor-pump casings 21 and the electronic-unit casing 11 (while omitting the partial casings 12, 22 and 23) can also be joined together to form a compact motor-pump unit axle set.

[0096] In a not represented embodiment example the vehicle axle 56 or the chassis axle 51 is configured symmetrically, i.e. the hydraulic connector between the respective motor-pump group 21a and the shock absorber 54 is identical for both wheels 55.

[0097] In FIG. 3 the shock absorbers 54 and the wheels 55 of a vehicle axle 56 are represented with an optional chassis axle 51 with a motor-pump system 2 with two motor-pump groups 21 connected thereto. A common, central electronic unit 11a, which is arranged in an electronic-unit housing 10, is connected via two pluggable supply strings 30 with corresponding supply connectors 32 to two motor-pump groups 21a which are arranged in corresponding motor-pump casings 21. The motor-pump group 21a represented in FIG. 3 on the left side is arranged in a motor-pump housing 20 which is joined together from a motor-pump casing and two partial casings 22 and 23. The motor-pump group 21a is connected via hydraulic lines 40 to the pressure chambers 52 of the shock absorber 54, said pressure chambers being separated by a piston 53.

[0098] The motor-pump group 21a represented in FIG. 3 on the right side, in contrast, is arranged directly on the shock absorber 54 or its damper cylinder. Correspondingly, in order to create a sealed housing around the motor-pump group 21a, the shock absorber 54 or its damper cylinder can assume the closing function of the partial casing 23, so that here a sealed housing for the motor-pump group 21a is created by the shock absorber 54 or the outer side of the shock absorber 54 and the motor-pump casing 21 and the partial casing 22.

[0099] FIG. 4 represents a chassis system 50. Said chassis system comprises an apparatus 3 or a motor-pump system 3 with four motor-pump groups 21 with a central, common electronic unit 11a. The motor-pump system 3 correspondingly comprises an electronic-unit housing 10 and four motor-pump housings 20, which are connected via respectively one (pluggable) supply string 30 to the electronic-unit housing 10. The hydraulic connection between the motor-pump groups 21a and the respective (not represented) damper cylinders 54 of the wheels 55 is effected, for example, using one of the two variants represented in the embodiment of FIG. 3. The two vehicle axles 56 can optionally comprise a chassis axle 51.

[0100] The hydraulic connection between a motor-pump group 21a and the respective shock absorber 54 is identical here on both wheels 55 of a given vehicle axle.

[0101] In FIG. 5A a further embodiment example of a chassis system 50 is represented. Said chassis system again comprises two vehicle axles 56 and a motor-pump system 2 with two motor-pump groups 21a on both axles. Both vehicle axles 56 correspondingly comprise respectively motor-pump systems 2 with three construction units, an electronic-unit housing 10 and two motor-pump housings 20, which are connected respectively via a supply string 30.

[0102] In the FIGS. 5B to 5D further embodiment examples of a chassis system 50 are represented, wherein the vehicle axle 56 on the top in the figures is respectively configured like in the embodiment example of FIG. 5A.

[0103] However, in the vehicle axle 56 represented at the bottom of FIG. 5B a compact motor-pump-unit axle set is provided.

[0104] In the vehicle axle 56 represented at the bottom of FIG. 5C there are provided two motor-pump systems 1 with respectively one motor-pump group 21a.

[0105] In the vehicle axle 56 represented at the bottom of FIG. 5D there are provided two compact motor-pump units.

LIST OF REFERENCE NUMERALS

[0106] 1 motor-pump system with one motor-pump group 21a [0107] 2 motor-pump system with two motor-pump groups 21a [0108] 3 motor-pump system with four motor-pump groups 21a [0109] 10 electronic-unit housing [0110] 11 electronic-unit casing [0111] 11a electronic unit [0112] 12 partial casing [0113] 13 bus interface [0114] 14 supply voltage interface [0115] 20 motor-pump housing [0116] 21 motor-pump casing [0117] 21a motor-pump group [0118] 211 motor casing [0119] 211a electric motor, electric motor generator [0120] 212 pump casing [0121] 212a hydraulic pump [0122] 22 partial casing [0123] 23 partial casing [0124] 30 supply string [0125] 31 supply string section [0126] 32 supply connector [0127] 33 casing lead-through [0128] 40 hydraulic line [0129] 50 chassis system [0130] 51 chassis axle [0131] 52 pressure chamber [0132] 53 piston [0133] 54 shock absorber [0134] 55 wheel [0135] 56 vehicle axle