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: US12480968申请日: 2009-06-09
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公开(公告)号: US08202186B2公开(公告)日: 2012-06-19
- 发明人: Yuuji Saitou , Goh Endo , Osamu Sato
- 申请人: Yuuji Saitou , Goh Endo , Osamu Sato
- 申请人地址: JP Fuji-shi
- 专利权人: Jatco Ltd
- 当前专利权人: Jatco Ltd
- 当前专利权人地址: JP Fuji-shi
- 代理机构: Foley & Lardner LLP
- 优先权: JP2008-152365 20080611
- 主分类号: F16H31/00
- IPC分类号: F16H31/00
摘要:
A hydraulic control apparatus for an automatic transmission, including a sequential shift control means for performing sequential shift control in a case where it is necessary to execute the second shift during execution of the first shift. The sequential shift control includes starting reduction of hydraulic fluid pressure in the third friction element when a parameter that varies in accordance with a degree of progress of the first shift has reached a predetermined value, and performing piston stroke control that includes outputting a high hydraulic pressure command as a hydraulic fluid pressure to the second friction element when the selector valve is switched from the second position to the first position, and subsequent to completion of outputting of the high hydraulic pressure command, outputting a low hydraulic pressure command that is lower than the high hydraulic pressure command.
公开/授权文献
- US20090312132A1 HYDRAULIC CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION 公开/授权日:2009-12-17
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