Vehicle drive apparatus that reduces or prevents an increase in oil agitation caused by a chain
AssigneeAisin Corporation
InventorsTakahiro Torii, Kazuki Kojima, Masahiro Ito, Yuya Ishihara
Life of this patent
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Abstract
An intermediate wall is provided with a return oil hole through which oil discharged from a friction engagement device returns toward an oil reservoir. A chain drive is disposed adjacent to the intermediate wall. The chain drive transmits a driving force from an input member and/or a rotary electric machine to an oil pump. There is provided an oil guide through which oil flowing through the return oil hole is guided to a region other than a chain placement region inside a case. The chain placement region is a region where a chain of the chain drive is placed.
Claims20
A vehicle drive apparatus comprising:
- an input member drivingly connected to an internal combustion engine;
- an output member drivingly connected to a wheel;
- a friction engagement device;
- a rotary electric machine drivingly connected to the input member through the friction engagement device;
- a transmission disposed between the rotary electric machine and the output member;
- an oil pump;
- and a case housing the input member, the output member, the friction engagement device, the rotary electric machine, the transmission, and the oil pump, wherein
- the case includes an intermediate wall disposed between the friction engagement device and the transmission and between the rotary electric machine and the transmission in an axial direction,
- an oil reservoir to store oil is defined in an internal space of the case on a side of the intermediate wall that faces the transmission,
- the intermediate wall is provided with a return oil hole through which oil discharged from the friction engagement element returns toward the oil reservoir,
- a chain drive is disposed adjacent to a portion of the intermediate wall that faces the transmission, the chain drive including a chain to transmit a driving force from at least one of the input member and the rotary electric machine to the oil pump,
- the vehicle drive apparatus further comprises an oil guide through which oil flowing through the return oil hole is guided to a region other than a chain placement region inside the case, the chain placement region being a region where the chain is placed, and
- the oil flowing through the return oil hole is guided through the oil guide and returned to the oil reservoir.
Dependencies are inferred from the claim text.