Invention Grant
- Patent Title: Hydraulic control device for automatic transmission
- Patent Title (中): 液压控制装置自动变速器
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Application No.: US12546726Application Date: 2009-08-25
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Publication No.: US08224541B2Publication Date: 2012-07-17
- Inventor: Yuhei Yoshioka , Kazuyuki Noda , Naoki Itazu , Yoshinobu Nozaki
- Applicant: Yuhei Yoshioka , Kazuyuki Noda , Naoki Itazu , Yoshinobu Nozaki
- Applicant Address: JP Aichi-Ken JP Aichi-Ken
- Assignee: Aisin AW Co., Ltd.,Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Aisin AW Co., Ltd.,Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Aichi-Ken JP Aichi-Ken
- Agency: Sughrue Mion, PLLC
- Priority: JP2008-255841 20080930
- Main IPC: G06F7/00
- IPC: G06F7/00

Abstract:
A hydraulic control device for an automatic transmission that includes a fail-safe function to establish a fail-safe traveling state where a predetermined shift speed is established, and a fail-safe stopping state where the primary pressure to all of the hydraulic servos is cut-off when a failure occurs. The hydraulic control device is able to switch between the fail-safe traveling state and the fail-safe stopping state even after a failure occurs, thereby enhancing a limp-mode function.
Public/Granted literature
- US20100082209A1 HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION Public/Granted day:2010-04-01
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