发明申请
US20110135498A1 METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL 有权
辅助直接起动控制的方法和系统

METHODS AND SYSTEMS FOR ASSISTED DIRECT START CONTROL
摘要:
Methods and systems are provided for pressurizing a transmission hydraulic circuit including a transmission mechanical pump coupled to an engine though a gearbox. One example method comprises, during an engine start, adjusting a speed ratio between the transmission pump and the engine between a first speed ratio and a second speed ratio, the pump rotating faster relative to the engine at the first speed ratio as compared with the second speed ratio.
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