Control system for hybrid vehicle

Details Control system for hybrid vehicle Control system for hybrid vehicle

1998-09-16

2000-10-31

Martin, David

Electricity: motive power systems

Battery-fed motor systems

318378, 180 652, 180 653, H02P 300

Patent

active

061407801

ABSTRACT:
A control system controls a hybrid vehicle having an engine for rotating a drive axle, an electric motor for assisting the engine in rotating the drive axle and converting kinetic energy of the drive axle into electric energy in a regenerative mode, and an electric energy storage unit connected through a power drive unit to the electric motor, for storing electric energy. The control system has a regenerative quantity determining unit which includes first, second, and third first regenerative quantity establishing units. The first regenerative quantity establishing unit establishes a first regenerative quantity for the electric motor based on a vehicle speed of the hybrid vehicle when the supply of fuel to the engine is stopped upon deceleration of the hybrid vehicle. The second regenerative quantity establishing unit establishes a second regenerative quantity for the electric motor based on a remaining capacity of the electric energy storage unit. The third regenerative quantity establishing unit establishes a third regenerative quantity for the electric motor based on a temperature of the drive control circuit. A pumping loss controlling unit controls pumping losses of the engine based on the first, second, and third regenerative quantities.

REFERENCES:
patent: 4494506 (1985-01-01), Hayama et al.
patent: 5725064 (1998-03-01), Ibaraki et al.
patent: 5731669 (1998-03-01), Shimizu et al.
patent: 5806617 (1998-09-01), Yamaguchi
patent: 5821706 (1998-10-01), Koga
patent: 5846155 (1998-12-01), Taniguchi et al.

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