초록 ▼

A regenerative brake control method and system for a hybrid electric vehicle (HEV) with a disconnect clutch separating the engine from the motor. When the engine is disconnected from the HEV powertrain, more regenerative braking energy is possible because the negative powertrain torque of the engine

A regenerative brake control method and system for a hybrid electric vehicle (HEV) with a disconnect clutch separating the engine from the motor. When the engine is disconnected from the HEV powertrain, more regenerative braking energy is possible because the negative powertrain torque of the engine's friction and pumping is eliminated. The control can determine when to disconnect and reconnect the engine to the powertrain using, for example, driver demand, vehicle speed, accelerator position, brake pedal position, engine state, motor state, and motor fault status. The control also minimizes powertrain disturbance to improve vehicle drivability by continuously adjusting the amount of regenerative braking to correspond to the changing torque of the engine on the powertrain during disconnect or reconnect.

대표청구항 ▼

A regenerative brake control method and system for a hybrid electric vehicle (HEV) with a disconnect clutch separating the engine from the motor. When the engine is disconnected from the HEV powertrain, more regenerative braking energy is possible because the negative powertrain torque of the engine

A regenerative brake control method and system for a hybrid electric vehicle (HEV) with a disconnect clutch separating the engine from the motor. When the engine is disconnected from the HEV powertrain, more regenerative braking energy is possible because the negative powertrain torque of the engine's friction and pumping is eliminated. The control can determine when to disconnect and reconnect the engine to the powertrain using, for example, driver demand, vehicle speed, accelerator position, brake pedal position, engine state, motor state, and motor fault status. The control also minimizes powertrain disturbance to improve vehicle drivability by continuously adjusting the amount of regenerative braking to correspond to the changing torque of the engine on the powertrain during disconnect or reconnect. 3, 19940400, Begnaud et al., 175/053; US-5358371, 19941000, Neddo, 414/745.5; US-5375667, 19941200, Trevisani, 175/052; US-5423390, 19950600, Donnally et al., 175/085; US-5437527, 19950800, McGill et al., 414/022.51; US-5445032, 19950800, Dixon, 073/788; US-5458454, 19951000, Sorokan, 414/786; US-5522699, 19960600, Smith, 405/154; US-5556253, 19960900, Rozendaal et al., 414/797.7; US-5575344, 19961100, Wireman, 175/085; US-5584351, 19961200, Ellicott, 175/062; US-5607280, 19970300, Rozendaal, 414/745.7; US-5620299, 19970400, Grabovsky et al., 414/745.7; US-5687804, 19971100, Lappalainen et al., 175/052; US-5707175, 19980100, Geelhoed, 405/180; US-5762150, 19980600, Cheng et al., 175/052; US-5816774, 19981000, Stolzer et al., 414/792.8; US-5941324, 19990800, Bennett, 175/085; US-5954209, 19990900, Wurm et al., 211/070.4; US-5996710, 19991200, Jansson et al., 175/052; US-6074153, 20000600, Allen, 414/022.53; US-6085852, 20000700, Sparks et al., 175/052; US-6089333, 20000700, Rise, 175/085