Control system for controlling excess air ratio of internal comb

Details Control system for controlling excess air ratio of internal comb Control system for controlling excess air ratio of internal comb

1994-09-01

1995-05-16

Kamen, Noah P.

Internal-combustion engines

Vibration compensating device

F02B 7506

Patent

active

054151392

ABSTRACT:
A system for controlling an excess air ratio of an internal combustion engine for an automotive vehicle is provided which includes a battery, a generator-motor, an air/fuel sensor, and a controller. The generator-motor is mechanically connected to the engine to establish transmission of torque therebetween, and operates in motor and generator modes. In the motor mode, the generator-motor serves as a motor to provide a given amount of torque to the engine under power supply of the battery. In the generator mode, the generator-motor works as a generator to convert engine torque into electric power for charging the battery. The air/fuel sensor determines an excess air ratio of the engine. The controller activates the generator-motor in the motor mode to control the amount of torque to be supplied to the engine based on the excess air ratio so that an air/fuel ratio falls within a preselected range suitable for purification of exhaust gas of the engine.

REFERENCES:
patent: 4922869 (1990-05-01), Kadomukai et al.

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