Vehicle drive system
AssigneesAisin Aw Co., Ltd., Toyota Jidosha Kabushiki Kaisha
InventorsJunji Matsushita, Akira Isogai, Daisuke Iimura, Hironari Toyoda
Life of this patent
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Abstract
A vehicle drive system, including a motor generator; a gear group having a plurality of gears; and a motor cooling circuit for cooling the motor generator. The system further includes a lubricating circuit for lubricating the gear group; a cooler circuit in which an oil cooler is provided; and an oil pump that supplies oil to each circuit. The motor cooling circuit is arranged in series with and downstream of the cooler circuit, and the lubricating circuit is arranged parallel to the cooler circuit with respect to the oil pump.
Claims19
A vehicle drive system, comprising:
- a motor generator;
- a gear group having a plurality of gears;
- a motor cooling circuit for cooling the motor generator;
- a lubricating circuit for lubricating the gear group;
- a cooler circuit in which an oil cooler is provided;
- an oil pump that supplies oil to each circuit;
- and
- a pressure regulating valve that regulates a pressure of oil supplied to each circuit;
- and
- an intake port of the pressure regulating valve is provided in a main oil passage of a lubricating oil passage, wherein
- the motor cooling circuit is arranged in series with and downstream of the cooler circuit, and
- the lubricating circuit is arranged parallel to the cooler circuit with respect to the oil pump.
Dependencies are inferred from the claim text.