DEVICE FOR EMBODIMENT OF ELECTRIC VEHICLE MODE IN SOFT HYBRID CAR

摘要

A device for embodiment of an electric vehicle mode in a soft hybrid vehicle is provided to control linkage of a motor and an engine by installing an engine clutch between a torque converter and an automatic transmission, thereby allowing the soft hybrid vehicle to operate either the motor or the engine or both depending on the needs. In a device for embodiment of an electric vehicle mode in a soft hybrid vehicle, a motor(20) for providing an auxiliary power to an engine(50) is installed between a torque converter(10) and an automatic transmission(40), and an engine clutch(30) is installed between a turbine(11) of the torque converter and a rotor(22) of the motor. An HCU(Hybrid control unit) sends an engine clutch operation signal to a TCU(Transmission control unit) so that the TCU controls a valve body of the automatic transmission to supply hydraulic pressure to the engine clutch. After the vehicle is set in motion using the motor, the HCU synchronizes the rotation of the engine to the motor by controlling the rotation of an ISG(Integrated starter and generator) connected to the engine through a belt according to the rotation of the motor. The engine includes a turbine hub integrally installed in the turbine and rotated relative to a transmission input shaft, an outer retainer integrally installed in the turbine hub, clutch plates installed on an inner circumference of the outer retainer, an engine clutch hub spline combined to the transmission input shaft, an inner retainer integrally installed in the engine clutch hub, clutch disks installed on an outer circumference of the inner retainer and disposed between the clutch plates, and a piston pushing the clutch plates and the clash disks tightly to one another by being pushed forward by the oil pressure entering through oil inlets formed on the turbine hub.