Invention Grant
- Patent Title: Hydraulic control device of automatic transmission
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Application No.: US15100855Application Date: 2014-12-26
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Publication No.: US09765880B2Publication Date: 2017-09-19
- Inventor: Yoshihiro Maeda , Nobuyuki Hirai , Masamichi Yamaguchi , Yoshimitsu Hyodo , Kenichi Tsuchida , Hiroyuki Kutsubo
- Applicant: AISIN AW CO., LTD.
- Applicant Address: JP Anjo
- Assignee: AISIN AW CO., LTD.
- Current Assignee: AISIN AW CO., LTD.
- Current Assignee Address: JP Anjo
- Agency: Oliff PLC
- Priority: JP2013-270422 20131226; JP2014-011873 20140124; JP2014-040477 20140303
- International Application: PCT/JP2014/084517 WO 20141226
- International Announcement: WO2015/099125 WO 20150702
- Main IPC: F16H31/00
- IPC: F16H31/00 ; F16H61/02 ; F16H61/00 ; F16K31/06 ; F16H61/686 ; F16H3/66

Abstract:
A hydraulic control device that includes a solenoid valve capable of supplying a first engagement pressure to the first engagement element; and a first cut valve that is interposed in an oil passage from the solenoid valve to the first engagement element and is capable of cutting off supply of a hydraulic pressure to the first engagement element, wherein only the first engagement pressure and a second engagement pressure serve as hydraulic pressures that act such that the first cut valve cuts off the supply of the hydraulic pressure to the first engagement element, and the first cut valve is switched so as to cut off the supply of the hydraulic pressure to the first engagement element when the first engagement pressure and the second engagement pressure are simultaneously supplied to the first engagement element and the second engagement element, respectively.
Public/Granted literature
- US09726277B2 Hydraulic control device of automatic transmission Public/Granted day:2017-08-08
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