Patent ID: 6394208
Filing Date: 2002-05-28
Classification: B60K,B60L,B60W,Y02T

Abstract:
A hybrid electric vehicle comprising:a powerplant for propelling the vehicle comprising a combustion engine and a dynamoelectric machine that is arranged for interaction with the combustion engine so as to function, with respect to the engine, at times as a power source for adding torque into a drivetrain through which the powerplant propels the vehicle, and at times as a power sink for subtracting torque from the drivetrain; a control system comprising a vehicle controller that receives driver input and issues respective outputs to an engine controller for controlling the engine and to a dynamoelectric machine controller for controlling the dynamoelectric machine, respectively; a signal source on the engine providing engine speed data to said dynamoelectric machine controller; the dynamoelectric machine controller comprising a look-up table that contains respective make-up torque values correlated with respective values of engine speed data to smooth out vehicle acceleration and provide better drivability during certain driving condition; and the dynamoelectric machine controller comprising a processor that causes a make-up torque value from the look-up table corresponding to a value of engine speed data received from the signal source, to be included in the torque output of the dynamoelectric machine for interaction with the engine.