发明授权
US08771144B2 Manual downshift control method for automatic transmission 有权
手动换挡控制方式自动变速箱

Manual downshift control method for automatic transmission
摘要:
A control system and a method for controlling an automatic transmission that determines the disengagement of an off-going clutch and the engagement of an on-coming clutch by monitoring the corresponding hydraulic clutch pressures, and/or the calculated gear ratios with or without the assistance of off-pressure timer controls, or both.
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