OIL LEVEL MEASURING DEVICE

Abstract

An oil level measuring device has a distal end and a proximal end. The oil level measuring device includes an arm comprising a first channel and a second channel, an electronic oil level sensor comprising a measuring mean configured to measure the level of the oil in an oil pan and a connecting port, the measuring mean being hosted into the first channel of the arm, a dipstick hosted into the second channel of the arm and configured to dip into the oil in the oil pan.

Claims

1. An oil level measuring device extending along a longitudinal axis between a distal end and a proximal end, said oil level measuring device including: an arm extending along the longitudinal axis and comprising a first channel and a second channel, the first and the second channels extending along the longitudinal axis an electronic oil level sensor comprising a measuring mean configured to measure a level of oil in an oil pan and a connecting port, the measuring mean being hosted into the first channel of the arm, a dipstick removably hosted into the second channel of the arm and configured to dip into the oil in the oil pan.

2. The oil level measuring device according to claim 1, wherein the oil level measuring device at its proximal end comprises a flange including a cavity configured to receive the connecting port.

3. The oil level measuring device according to claim 1, wherein the measuring mean of the oil level sensor includes a resistive wire.

4. The oil level measuring device according to claim 1, wherein the arm includes a plurality of holes.

5. The oil level measuring device according to claim 4, wherein the holes of the plurality of holes are evenly distributed along the longitudinal axis.

6. The oil lever measuring device according to claims 4, wherein the plurality of holes comprises first holes opening in the first channel and second holes opening in the second channel.

7. The oil lever measuring device according to claim 4, wherein the plurality of holes comprises third holes arranged in a separation wall extending along the longitudinal axis between the first channel and the second channel, the first channel and the second channel being in fluid communication via the third holes.

8. The oil lever measuring device according to claim 1, wherein the first channel comprises a first distal end provided with a first axial aperture and the second channel comprises a second distal end provided with a second axial aperture.

9. The oil level measuring device according to claim 1, wherein the flange of the oil level measuring device comprises an opening configured to receive a fixation mean.

10. The oil level measuring device according to claim 1, wherein the oil level measuring device comprises an electronic temperature level sensor.

11. The oil level measuring device according to claim 10, wherein considered along the longitudinal axis the electronic temperature level sensor comprises a sensing portion disposed closer to the distal end than the electronic oil level sensor.

12. An oil pan comprising the oil lever measuring device according to claim 1.

13. An internal combustion engine comprising an oil pan according to claim 12.

14. A vehicle comprising: the internal combustion engine according to claim 13 and a controller capable of receiving one or more signals associated with the level of the oil measured by the electronic oil level sensor.

15. The vehicle according to claim 14, wherein the controller is connected to or integrated into an electrical control unit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0041] With reference to the appended drawings, below follows a more detailed description of embodiments cited as non-limitative examples.

[0042] In the drawings:

[0043] FIG. 1 is a cross sectional view of an oil level measuring device according to first embodiment,

[0044] FIG. 2 is a view of an oil level measuring device of FIG. 1,

[0045] FIG. 3 is a cross sectional view of an oil pan of FIG. 1,

[0046] FIG. 4 is external view of an oil pan comprising the oil level measuring device of FIG. 1,

[0047] FIG. 5 is a view of an oil level measuring device according to a second embodiment,

[0048] FIG. 6 is a sectional view of the oil level measuring device of FIG. 5, and

[0049] FIG. 7 is a sectional view, perpendicular the view of FIG. 6, of the oil level measuring device of FIG. 5.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS OF THE INVENTION

[0050] FIGS. 1 and FIG. 2 illustrate an oil level measuring device 1 extending along a longitudinal axis AL between a distal end D and a proximal end P. The oil level measuring device 1 includes an arm 3 extending along the longitudinal axis AL. The arm 3 includes a first channel 4 and a second channel 6.

[0051] An electronic oil level sensor 5 has a measuring mean 8 hosted into the first channel 4 of the arm 3 and configured to measure the level of the oil in an oil pan 7 and a connecting port 9 (FIG. 3). The measuring means 8 of the oil level sensor 5 may include a resistive wire. A dipstick (not shown) is hosted into the second channel 6 of the arm 3 and is configured to dip into the oil of the oil pan 7.

[0052] The proximal end P of the oil level measuring device 1 may comprise a flange 10 including a cavity 11 configured to receive the connecting port 9.

[0053] The arm 3 may include a plurality of holes 12 so that the oil included in the oil pan 7 can easily cross the oil level measuring device 1 to measure its level. The holes 12 may be evenly distributed along the arm 3 so that the oil included in the oil pan 7 is evenly disturbed through the oil level measuring device 1 to precisely measure its level. The plurality of holes 12 comprises first holes 12A opening radially in the first channel 4 and second holes 12B opening radially in the second channel 6. The plurality of holes 12 also comprises third holes 12C arranged in a separation wall 16 extending along the longitudinal axis AL between the first channel 4 and the second channel 6, the first channel 4 and the second channel 6 being in fluid communication via the third holes 12C. The third hole 12C which is the closest to the proximal end P of the oil measuring device 101 forms a vent hole. The first channel 4 comprises a first distal end 4A provided with a first axial aperture 4B and the second channel 6 comprises a second distal end 6A provided with a second axial aperture 6B.

[0054] The flange 10 of the oil level measuring device 1 may comprise an opening 13 configured to receive a fixation mean 16 so that the oil level measuring device 1 is fixedly attached to the oil pan 7. For example, the fixation means 16 may include a screw and a nut.

[0055] The oil level measuring device 1 may comprise an electronic temperature sensor (not shown) to generate a signal representative of the oil temperature. For example, the electronic temperature sensor may transmit the temperature of the oil to the controller (not shown) of the vehicle. A controller may externally indicate the temperature of the oil without removing the oil level measuring device 1 from the oil pan 7.

[0056] The electronic temperature sensor may be embedded into the proximal end of the oil level measuring device 1. The oil temperature has to be measured continuously, when is the engine is running. When the engine is running, the oil level in the oil pan is low, since oil is sent everywhere in the engine (bearings, pistons . . . ).

[0057] The level measurement is done only at the start of the engine. The complete oil volume is in the oil pan at the start. The level can be measured.

[0058] FIGS. 3 and 4 illustrate the oil pan 7 provided with the oil level measuring device 1. The oil pan 7 comprises an oil pan body 7A having a through hole 14 receiving the oil level measuring device 1, said through hole 14 comprising a connecting mean 15 to secure the oil measuring device 1 to the oil pan body 7A. The oil pan 7 comprises oil (not shown), the oil level measuring device 1 secured on the oil pan 7 and one through hole 14 being configured to receive the oil level measuring device 1, said through hole 14 comprising a connecting mean 15.

[0059] The opening 13 of the oil level measuring device 1 may comprise a fixation mean 16 fixing said oil level measuring device 1 to the oil pan 7.

[0060] For example, an internal combustion engine (not shown) may comprise the oil pan 7 and the oil level measuring device 1.

[0061] For example, a vehicle (not shown) may comprise the internal combustion engine and a controller (not shown) capable of receiving one or more signals associated with the level of the oil measured by the electronic oil level sensor 5. The controller may externally indicate the level of the oil without removing the oil level measuring device 1 from the oil pan 7 to the driver through for example a display located in the cab (not shown) of the vehicle.

[0062] The controller may be connected to or integrated into an electrical control unit (ECU).

[0063] An oil level measuring device 101 according to a second embodiment is described with reference to FIGS. 5 to 7. The oil level measuring device 101 is similar to the oil level measuring device 1, the similar parts being not introduced again and having their reference signs incremented of “100”. Of course, the oil measuring device 101 may be mounted onto the oil pan 7 in place of the oil measuring device 1.

[0064] The oil measuring device 101 comprises a second channel 106 having an outer wall (i.e. the wall which is not common with the first channel 104) along the longitudinal axis AL. The separation wall 116 is provided with third holes 112C opening in front of discontinued portion of the outer wall (see FIG. 7). The third hole 112C which is the closest to the proximal end P of the oil measuring device 101 forms a vent hole. In the present example, the second holes 112B extend both in the outer wall and in the separation wall and open both the in the second channel 106 and in the first channel 104 (see FIGS. 5 and 6) and may be considered both as second and/or third holes.

[0065] The oil measuring device comprises an electronic oil level sensor 105 and an electronic temperature sensor 118. The electronic temperature level sensor 118 comprise a sensing portion 118A. Considered along the longitudinal axis AL, the sensing portion 118A of the electronic temperature sensor 118 is disposed closer to the distal end D than the electronic oil level sensor 105, i.e. in the present example than any portion of electronic oil level sensor 105.

[0066] The oil level measuring device according to the present disclosure is more compact. Furthermore, the oil level measuring device provides a better correlation between the electronic and the manual measure. Moreover, the dipstick and the electronic oil level sensor of the high sensitive oil level measuring device are well protected resulting in more precise measures. Additionally, the oil level measuring device is easy to assemble on the oil pan, less expensive and is adaptable to a wide range of vehicles.

[0067] It is to be understood that the present disclosure is not limited to the embodiments described above and illustrated in the drawings; rather, the skilled person will recognize that many changes and modifications may be made within the scope of the appended claims.