Invention Grant
- Patent Title: Fluid pressure control device for automatic transmission
- Patent Title (中): 用于自动变速器的流体压力控制装置
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Application No.: US13418906Application Date: 2012-03-13
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Publication No.: US08506454B2Publication Date: 2013-08-13
- Inventor: Tetsuya Shimizu , Tomoya Jinno , Masamichi Yamaguchi , Kenichi Tsuchida , Kazunori Ishikawa
- Applicant: Tetsuya Shimizu , Tomoya Jinno , Masamichi Yamaguchi , Kenichi Tsuchida , Kazunori Ishikawa
- Applicant Address: JP Anjo
- Assignee: Aisin AW Co., Ltd.
- Current Assignee: Aisin AW Co., Ltd.
- Current Assignee Address: JP Anjo
- Agency: Oliff & Berridge, PLC
- Priority: JP2011-060303 20110318
- Main IPC: F16H61/26
- IPC: F16H61/26

Abstract:
A fluid pressure control device including a first pump actuated by power from a motor; a pressure regulator that regulates a discharge pressure from the first pump; a second pump actuated by electric power; a switcher opening a first path extending from the pressure regulator to a fluid pressure chamber of a friction engagement element, and blocking a second path extending from the second pump to the fluid pressure chamber of the friction engagement element, when the signal pressure is equal to or more than a set pressure, and the switcher blocking the first and opening the second paths when the signal pressure is less than the set pressure; and a control that controls the second pump and the fluid supply unit to supply the fluid regulated by the pressure regulator to a destination different from the fluid pressure chamber of the friction engagement element when the motor is stopped.
Public/Granted literature
- US20120234645A1 FLUID PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION Public/Granted day:2012-09-20
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