초록 ▼

An engine and generator/motor are connected to the input shaft of a continuously variable transmission, and the output shaft of the continuously variable transmission is connected to drive wheels. A target value of a coasting torque acting on the output shaft during coasting is set according to a ve

An engine and generator/motor are connected to the input shaft of a continuously variable transmission, and the output shaft of the continuously variable transmission is connected to drive wheels. A target value of a coasting torque acting on the output shaft during coasting is set according to a vehicle speed. A real coasting torque is estimated from the output torque of the engine and frictional torque of the continuously variable transmission. By making the generator/motor function as a generator or a motor, fluctuation of the engine braking force due to a variation of drive ratio during coasting is suppressed so that the real coasting torque coincides with the target value.

대표청구항 ▼

[ What is claimed:] [1.] A control method for a vehicle drive system in which an engine and either one of a generator and motor are connected to a drive wheel via a continuously variable transmission, comprising the steps of:detecting a running state of said vehicle,determining whether or not the ve

[ What is claimed:] [1.] A control method for a vehicle drive system in which an engine and either one of a generator and motor are connected to a drive wheel via a continuously variable transmission, comprising the steps of:detecting a running state of said vehicle,determining whether or not the vehicle is coasting from said running state,setting a target value of a rotation torque of said drive wheel during coasting,calculating a real rotation torque of said drive wheel during coasting based on said running state, andcontrolling said either one of said generator and motor so that said real torque coincides with said target torque.