Invention Grant
- Patent Title: Hydraulic control apparatus for automatic transmission
- Patent Title (中): 液压控制装置自动变速器
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Application No.: US13140294Application Date: 2010-03-18
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Publication No.: US08886427B2Publication Date: 2014-11-11
- Inventor: Tetsuya Shimizu , Kenichi Tsuchida , Yoshimitsu Hyodo , Kazunori Ishikawa , Hironori Sugiura , Satoshi Nishio , Kazuki Kojima
- Applicant: Tetsuya Shimizu , Kenichi Tsuchida , Yoshimitsu Hyodo , Kazunori Ishikawa , Hironori Sugiura , Satoshi Nishio , Kazuki Kojima
- Applicant Address: JP Anjo
- Assignee: Aisin Aw Co., Ltd.
- Current Assignee: Aisin Aw Co., Ltd.
- Current Assignee Address: JP Anjo
- Agency: Oliff PLC
- Priority: JP2009-068100 20090319; JP2009-291492 20091222
- International Application: PCT/JP2010/001966 WO 20100318
- International Announcement: WO2010/106808 WO 20100923
- Main IPC: G06F7/00
- IPC: G06F7/00 ; F16H61/00 ; F16H61/14

Abstract:
A hydraulic control apparatus for an automatic transmission has a circulating oil supply passage that supplies circulating oil to a starting apparatus, a circulating oil discharge passage that discharges circulating oil from the starting apparatus, and a speed change mechanism oil supply passage that supplies oil to a speed change mechanism. The oil discharged from an oil pump is supplied to the starting apparatus and the speed change mechanism. A first flow rate changing device that can change the flow rate of the circulating oil is arranged in the circulating oil discharge passage. A first flow rate instructing portion output a command to the flow rate changing device to change the flow rate when the amount of oil discharged from the oil pump is low, and reduces the flow rate to the starting apparatus, which enables the hydraulic pressure necessary for shifting to be obtained in the speed change mechanism.
Public/Granted literature
- US20110247443A1 HYDRAULIC CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION Public/Granted day:2011-10-13
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