Invention Grant
- Patent Title: Electric oil pump control apparatus for vehicle, electric oil pump control method for vehicle, and shift apparatus
- Patent Title (中): 车用电动油泵控制装置,车用电动油泵控制方法及换档装置
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Application No.: US12076920Application Date: 2008-03-25
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Publication No.: US08092331B2Publication Date: 2012-01-10
- Inventor: Kenta Kumazaki , Tooru Matsubara , Atsushi Tabata
- Applicant: Kenta Kumazaki , Tooru Matsubara , Atsushi Tabata
- Applicant Address: JP Toyota
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota
- Agency: Oliff & Berridge, PLC
- Priority: JP2007-085734 20070328
- Main IPC: B60W20/00
- IPC: B60W20/00 ; F16H59/70

Abstract:
When the shift position is changed to the drive position, the amount of oil that is supplied to an automatic shift unit is increased by a larger amount as the standby hydraulic pressure is lower. Therefore, even if the standby hydraulic pressure is decreased, the required hydraulic pressure is more easily achieved when the shift position is changed to the drive position. Therefore, it is possible to decrease the standby hydraulic pressure without slowing down the response to the automatic shift unit to the hydraulic pressure and reducing the useful life of the automatic shift unit. Thus, the amount of electricity consumed by the electric oil pump is reduced. As a result, it is possible to enhance the fuel efficiency.
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