Hybrid drive device

Patent metadata

Field	Value
Publication number	US-9528436-B2
Application number	US-201313762839-A
Country	US
Kind code	B2
Filing date	Feb 8, 2013
Priority date	Feb 10, 2012
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A hybrid drive device having an engine coupling shaft member, a speed change mechanism, a rotating electrical machine, and an engine connecting clutch. A first lubricating oil passage scatters lubricating oil from radially inside to radially outside of first and second friction plates. A first one-way clutch is interposed between an engine coupling shaft member and a coupling member, and is configured to not be engaged when rotation of the engine coupling shaft member becomes lower than rotation of the coupling member. A second one-way clutch is configured not to be engaged when rotation of the rotating electrical machine becomes lower than rotation of the coupling member. An engine driven oil pump generates an oil pressure to be supplied by a driving force of the internal combustion engine or a driving force of the rotating electrical machine regardless of engagement or disengagement of the engine connecting clutch.

First claim

The invention claimed is:

1. A hybrid drive device, comprising:
an engine coupling shaft member that is drivingly coupled to an internal combustion engine;
a speed change mechanism that shifts rotation received by an input shaft member and outputs the shifted rotation to a wheel;
a rotating electrical machine drivingly coupled to the input shaft member;
a housing case containing the rotating electrical machine;
an engine connecting clutch that has a first friction plate drivingly coupled to the engine coupling shaft member, a second friction plate drivingly coupled to the input shaft member, and a hydraulic servo engaging or disengaging the first friction plate and the second friction plate, and that has both the first friction plate and the second friction plate placed in the housing case;
a first lubricating oil passage that scatters lubricating oil from radially inside to radially outside of the first friction plate and the second friction plate to lubricate the first friction plate and the second friction plate;
a coupling member;
a first one-way clutch that is interposed between the engine coupling shaft member and the coupling member, and that is not engaged when rotation of the engine coupling shaft member becomes lower than rotation of the coupling member;
a second one-way clutch that is interposed between the rotating electrical machine and the coupling member, and that is not engaged when rotation of the rotating electrical machine becomes lower than rotation of the coupling member; and
an engine driven oil pump that is drivingly coupled to the coupling member and generates an oil pressure to be supplied to the first lubricating oil passage by a driving force of the internal combustion engine or a driving force of the rotating electrical machine regardless of engagement or disengagement of the engine connecting clutch.

2. The hybrid drive device according to claim 1 , further comprising:
a second lubricating oil passage that supplies the oil to the rotating electrical machine.

3. The hybrid drive device according to claim 2 , wherein
the engine coupling shaft member has a recessed portion in an axial tip end of the engine coupling shaft member,
the input shaft member has a tip end of the input shaft member inserted in the recessed portion, and the input shaft member and the recessed portion are sealed by a seal member,
the input shaft member has a first oil passage formed in an axial direction and closed at the tip end, a second oil passage formed so as to extend through the input shaft member in a radial direction from the first oil passage, and a third oil passage formed parallel to the first oil passage in the axial direction and opened at the tip end,
the engine coupling shaft member has a fourth oil passage communicating with the third oil passage and formed in the axial direction, and a fifth oil passage formed so as to extend through the engine coupling shaft member in the radial direction from the fourth oil passage,
the first lubricating oil passage is formed by the first oil passage and the second oil passage, and
the second lubricating oil passage is formed by the third oil passage, the fourth oil passage, and the fifth oil passage.

4. The hybrid drive device according to claim 2 , wherein
the first one-way clutch and the second one-way clutch are lubricated by oil supplied from the second lubricating oil passage.

5. The hybrid drive device according to claim 3 , wherein
the first one-way clutch and the second one-way clutch are lubricated by oil supplied from the second lubricating oil passage.

6. The hybrid drive device according to claim 4 , wherein
the oil that has lubricated the first one-way clutch and the second one-way clutch is supplied to the rotating electrical machine.

7. The hybrid drive device according to claim 5 , wherein
the oil that has lubricated the first one-way clutch and the second one-way clutch is supplied to the rotating electrical machine.

8. The hybrid drive device according to claim 2 , further comprising:
flow rate adjusting means that adjusts a flow rate of oil to be supplied to the first lubricating oil passage, wherein
the second lubricating oil passage branches off at a position upstream of the flow rate adjusting means.

9. The hybrid drive device according to claim 3 , further comprising:
flow rate adjusting means that adjusts a flow rate of oil to be supplied to the first lubricating oil passage, wherein
the second lubricating oil passage branches off at a position upstream of the flow rate adjusting means.

10. The hybrid drive device according to claim 4 , further comprising:
flow rate adjusting means that adjusts a flow rate of oil to be supplied to the first lubricating oil passage, wherein
the second lubricating oil passage branches off at a position upstream of the flow rate adjusting means.

11. The hybrid drive device according to claim 5 , further comprising:
flow rate adjusting means that adjusts a flow rate of oil to be supplied to the first lubricating oil passage, wherein
the second lubricating oil passage branches off at a position upstream of the flow rate adjusting means.

12. The hybrid drive device according to claim 6 , further comprising:
flow rate adjusting means that adjusts a flow rate of oil to be supplied to the first lubricating oil passage, wherein
the second lubricating oil passage branches off at a position upstream of the flow rate adjusting means.

13. The hybrid drive device according to claim 7 , further comprising:
flow rate adjusting means that adjusts a flow rate of oil to be supplied to the first lubricating oil passage, wherein
the second lubricating oil passage branches off at a position upstream of the flow rate adjusting means.

14. The hybrid drive device according to claim 1 , wherein
the engine connecting clutch has a clutch drum drivingly coupled to the input shaft member,
the second friction plate has an outer peripheral side of the second friction plate drivingly coupled to the clutch drum, and
the clutch drum has a through hole that is positioned so as to at least partially overlap the second friction plate as viewed in a radial direction, and that discharges the oil supplied to the first and second friction plates.

15. The hybrid drive device according to claim 1 , further comprising:
a control portion that controls a hydraulic control device so as to supply the oil pressure generated by the engine driven oil pump to the engine connecting clutch while the engine connecting clutch is slipped.

Assignees

• Kasuya Satoru
• Kito Masashi
• Seki Yuichi
• Kondo Ryosuke
• Murai Osamu
• Aisin Aw Co

Inventors

• Kasuya Satoru
• Kito Masashi
• Seki Yuichi
• Kondo Ryosuke
• Murai Osamu

Classifications

• Y02T10/62

  Hybrid vehicles · CPC title

• B60K6/48

  Parallel type · CPC title

• F16D25/123

  in view of cooling and lubrication · CPC title

• Y02T10/6252

  Cross-Sectional Technologies · mapped topic

• F02B63/04 Primary

  for electric generators · CPC title