发明名称 |
Control system for automatic transmission |
摘要 |
A pressure regulating valve regulates an original pressure outputted from a manual valve by means of a control pressure generated by a solenoid in a D range and supplies the regulated original pressure to an engaging element. An electronic control unit filters a current signal supplied to the solenoid to generate the control pressure by using a strong filter when a N range is switched to a D range during stoppage of a vehicle so that the control pressure has a gentle rise characteristic, switches the filtering process to a filtering process using a weak filter to rapidly move the pressure regulating valve in a working pressure discharge direction when the N range is switched to the D range during running of the vehicle and returns the filtering process to the filtering process using a strong filter after a predetermined time period. Thereby, occurrence of shock is suppressed when the D range is again selected after the N range is selected during running in the D range.
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申请公布号 |
US6716127(B2) |
申请公布日期 |
2004.04.06 |
申请号 |
US20020254045 |
申请日期 |
2002.09.24 |
申请人 |
JATCO LTD |
发明人 |
TAKATORI KAZUHIRO;SATO OSAMU;IMAMURA TATSUYA;FUKASAWA TOSHIHIDE |
分类号 |
F16H61/06;F16H61/04;F16H61/16;F16H61/686;(IPC1-7):F16H59/08 |
主分类号 |
F16H61/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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