Title:
VEHICLE DRIVE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/166764
Kind Code:
A1
Abstract:
Provided is a vehicle drive system that reduces oil agitation loss which occurs in a reduction gear during vehicle startup, and that sufficiently sends a cooling oil to a motor to improve the reliability of the motor. This vehicle drive system 100a is characterized by comprising: an electric motor 1; a reduction gear 2; a reduction gear casing 2b that houses the reduction gear 2; an oil 8 that is accommodated in the reduction gear casing 2b; an oil storage unit vertically over the electric motor 1; a pump 3 that sends the oil 8 stored in a lower portion of the reduction gear 2 to the oil storage unit 5; a pipe 9 that connects the oil storage unit 5 and the electric motor 1; a valve 6 that is provided to the pipe 9 to control conduction/interruption of the pipe 9; and a control device 20 that controls the electric motor 1, the reduction gear 2, the pump 3, and the valve 6. This vehicle drive system is also characterized in that the control device 20 uses the valve 6 to control the starting/stopping of supply of the oil 8 from the oil storage unit 5 to the electric motor 1.
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Inventors:
SUZUKI KENTA (JP)
ITAYA TAKAKI (JP)
ONO KOSAKU (JP)
ITAYA TAKAKI (JP)
ONO KOSAKU (JP)
Application Number:
PCT/JP2022/033796
Publication Date:
September 07, 2023
Filing Date:
September 08, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
B60L15/00; B60L9/18; F16H57/04; H02K9/19
Foreign References:
| JP2006312353A | 2006-11-16 | |||
| JP2020153438A | 2020-09-24 | |||
| JP2020061826A | 2020-04-16 | |||
| JP2020198675A | 2020-12-10 | |||
| JP2007247706A | 2007-09-27 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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