IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0045013
(2011-03-10)
|
등록번호 |
US-8708855
(2014-04-29)
|
우선권정보 |
JP-2010-074876 (2010-03-29) |
발명자
/ 주소 |
- Matsushita, Junji
- Isogai, Akira
- Iimura, Daisuke
- Toyoda, Hironari
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
5 |
초록
▼
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 oi
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.
대표청구항
▼
1. 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 cir
1. 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; anda pressure regulating valve that regulates a pressure of oil supplied to each circuit; andan intake port of the pressure regulating valve is provided in a main oil passage of a lubricating oil passage, whereinthe motor cooling circuit is arranged in series with and downstream of the cooler circuit, andthe lubricating circuit is arranged parallel to the cooler circuit with respect to the oil pump. 2. The vehicle drive system according to claim 1, wherein the lubricating circuit has greater oil passing resistance than the motor cooling circuit and the cooler circuit. 3. The vehicle drive system according to claim 2, wherein an upstream portion of the lubricating circuit is provided with an orifice. 4. The vehicle drive system according to claim 3, further comprising: the pressure regulating valve regulates a pressure of oil discharged from the oil pump and supplied to each circuit, whereinthe pressure regulating valve regulates such that a target flow of oil or more is supplied to the motor cooling circuit, and the pressure of the oil stays within a withstand pressure limit of each circuit. 5. The vehicle drive system according to claim 4, wherein a discharge port of the pressure regulating valve is connected to an intake port of the oil pump. 6. The vehicle drive system according to claim 5, wherein the pressure regulating valve is a relief valve that opens after the target flow of oil or more is supplied to the motor cooling circuit and before the pressure of oil supplied to each circuit reaches the withstand pressure limit of each circuit. 7. The vehicle drive system according to claim 6, wherein a cover of the motor generator is formed with an oil passage that connects to the oil pump, and at least part of a connection portion among the oil passage, the cooler circuit, and the lubricating circuit. 8. The vehicle drive system according to claim 5, wherein the cover of the motor generator is formed with the oil passage that connects to the oil pump, and at least part of a connection portion among the oil passage, the cooler circuit, and the lubricating circuit, and provided with the pressure regulating valve. 9. The vehicle drive system according to claim 8, wherein the cover of the motor generator is provided with the oil pump, and a return oil passage that connects the discharge port of the pressure regulating valve and the intake port of the oil pump. 10. The vehicle drive system according to claim 6, wherein the cover of the motor generator is formed with the oil passage that connects to the oil pump, and at least part of a connection portion among the oil passage, the cooler circuit, and the lubricating circuit, and provided with the pressure regulating valve. 11. The vehicle drive system according to claim 10, wherein the cover of the motor generator is provided with the oil pump, and a return oil passage that connects the discharge port of the pressure regulating valve and the intake port of the oil pump. 12. The vehicle drive system according to claim 2, wherein a cover of the motor generator is formed with an oil passage that connects to the oil pump, and at least part of a connection portion among the oil passage, the cooler circuit, and the lubricating circuit. 13. The vehicle drive system according to claim 1, further comprising: a pressure regulating valve that regulates a pressure of oil discharged from the oil pump and supplied to each circuit, whereinthe pressure regulating valve regulates such that a target flow of oil or more is supplied to the motor cooling circuit, and the pressure of the oil stays within a withstand pressure limit of each circuit, anda discharge port of the pressure regulating valve is connected to an intake port of the oil pump. 14. The vehicle drive system according to claim 13, wherein the pressure regulating valve is a relief valve that opens after the target flow of oil or more is supplied to the motor cooling circuit and before the pressure of oil supplied to each circuit reaches the withstand pressure limit of each circuit. 15. The vehicle drive system according to claims 14, wherein a cover of the motor generator is formed with an oil passage that connects to the oil pump, and at least part of a connection portion among the oil passage, the cooler circuit, and the lubricating circuit. 16. The vehicle drive system according to claim 13, wherein the cover of the motor generator is formed with the oil passage that connects to the oil pump, and at least part of a connection portion among the oil passage, the cooler circuit, and the lubricating circuit, and provided with the pressure regulating valve. 17. The vehicle drive system according to claim 16, wherein the cover of the motor generator is provided with the oil pump, and a return oil passage that connects the discharge port of the pressure regulating valve and the intake port of the oil pump. 18. The vehicle drive system according to claim 14, wherein the cover of the motor generator is formed with the oil passage that connects to the oil pump, and at least part of a connection portion among the oil passage, the cooler circuit, and the lubricating circuit, and provided with the pressure regulating valve. 19. The vehicle drive system according to claim 18, wherein the cover of the motor generator is provided with the oil pump, and a return oil passage that connects the discharge port of the pressure regulating valve and the intake port of the oil pump.
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