Invention Grant
- Patent Title: Shift control apparatus and method for automatic transmission
- Patent Title (中): 换档控制装置及自动变速装置的方法
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Application No.: US11889137Application Date: 2007-08-09
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Publication No.: US07824291B2Publication Date: 2010-11-02
- Inventor: Takaaki Tokura , Toshio Sugimura , Tomohiro Asami , Nobufusa Kobayashi , Yoshio Hasegawa
- Applicant: Takaaki Tokura , Toshio Sugimura , Tomohiro Asami , Nobufusa Kobayashi , Yoshio Hasegawa
- Applicant Address: JP Toyota
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota
- Agency: Oliff & Berridge, PLC
- Priority: JP2006-251852 20060915
- Main IPC: F16H31/00
- IPC: F16H31/00

Abstract:
When a determination for a second shift is made during a first shift process, if the turbine speed is the variety of the synchronous rotational speed for the speed to which the automatic transmission is to be shifted in the second shift and the hydraulic pressure command value for the first brake, which is engaged in the second shift, is equal to or larger than a predetermined value, the multiple shift portion immediately switches the shift control from the first shift control to the second shift control so that the hydraulic pressure command value for the first brake, which is engaged in the second shift, increase at a specific rate and the hydraulic pressure command value for the third brake, which is released in the second shift, decreases at a specific rate.
Public/Granted literature
- US20080070748A1 Shift control apparatus and method for automatic transmission Public/Granted day:2008-03-20
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