LIMP HOME MODE DRIVE METHOD FOR HYBRID ELECTRIC VEHICLE AND ENGINE CLUTCH CONTROL HYDRAULIC SYSTEM FOR THE SAME

摘要

Limp home driving method of the hybrid electrical vehicle in the engine clutch controller fail and the hydraulic circuit controlling the engine clutch for limp home driving are provided that the limp home mode driving of the vehicles by the engine power can be implemented. A hydraulic circuit controlling the engine clutch for limp home driving of the hybrid electrical vehicle comprises a hydraulic circuit(61) for supplying the working fluid of the mounted engine clutch(12) between the engine and drive motor, an engine clutch control solenoid valve controlling the supply of the working fluid, an engine clutch controller controlling the operation of the engine clutch. The engine clutch control solenoid valve comprises normal high type solenoid valve(62a). The normal high type solenoid valve includes a spool(64) which completely opens the inside flow channel in which the working fluid of the engine clutch passes.