Patent ID: 6253127
Filing Date: 2001-06-26
Classification: B60K,B60L,B60W,F02N,Y02T,Y10S

Abstract:
An engine startup control device for use with a hybrid vehicle, the vehicle comprising an engine, a first motor for starting the engine, a generator for driving the engine, a drive wheel connected to the engine via a clutch, a second motor for driving the drive wheel and a battery which can be connected to the first motor, the second motor and the generator, the control device comprising:a sensor which detects a rotation speed of the engine;a sensor which detects a charge amount of the battery;a power controller which varies a current supplied to the first motor according to a signal; anda microprocessor programmed to:calculate a target output torque of the first motor according to the charge amount of the battery;set the signal so that an output torque of the first motor coincides with a predetermined target output torque when the rotation speed of the engine is less than a predetermined target rotation speed; andset the signal so that the rotation speed of the engine is maintained at the target rotation speed after the rotation speed of the engine has reached the target rotation speed.