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METHOD AND APPARATUS TO CONTROL CLUTCH FILL PRESSURE IN AN ELECTRO-MECHANICAL TRANSMISSION
METHOD AND APPARATUS TO CONTROL CLUTCH FILL PRESSURE IN AN ELECTRO-MECHANICAL TRANSMISSION
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机译:机电传动中的离合器填充压力控制方法和装置
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摘要
A method to control a powertrain including a transmission, an engine, and an electric machine includes applying through a series of clutch fill events a series of incrementally changing command pressures in a pressure control solenoid controllably connected to a clutch within the transmission, monitoring a pressure switch fluidly connected to the pressure control solenoid and configured to indicate when the pressure switch is in a full feed state, determining changes in cycle times of the pressure switch corresponding to sequential applications of the series of incrementally changing command pressures, selecting a preferred command pressure to achieve a transient state in the clutch based upon the changes in pressure switch cycle times, and controlling the clutch based upon the preferred command pressure.
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