发明授权
- 专利标题: Hydraulic control apparatus for automatic transmission
- 专利标题(中): 液压控制装置自动变速器
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申请号: US12585833申请日: 2009-09-25
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公开(公告)号: US08182397B2公开(公告)日: 2012-05-22
- 发明人: Tetsuya Shimizu , Kenichi Tsuchida , Akitomo Suzuki , Kazunori Ishikawa
- 申请人: Tetsuya Shimizu , Kenichi Tsuchida , Akitomo Suzuki , Kazunori Ishikawa
- 申请人地址: JP Anjo
- 专利权人: Aisin AW Co., Ltd.
- 当前专利权人: Aisin AW Co., Ltd.
- 当前专利权人地址: JP Anjo
- 代理机构: Oliff & Berridge, PLC
- 优先权: JP2008-255095 20080930
- 主分类号: F16H61/26
- IPC分类号: F16H61/26 ; F16H31/00
摘要:
A hydraulic control apparatus for an automatic transmission includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a preliminary shift speed switch valve, and an oil pressure supply switch valve, which is switched between a normal-state position where the first, second, and third working fluid pressures can be supplied to the hydraulic servos of the first, second, and third friction engagement elements, respectively, and a failure-state position where the first and second preliminary oil pressures can be supplied to the hydraulic servos of the first and second friction engagement elements, respectively, and a line pressure can be supplied to the hydraulic servo of the third friction engagement element, during a failure that causes de-energization.
公开/授权文献
- US20100081545A1 Hydraulic control apparatus for automatic transmission 公开/授权日:2010-04-01
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