Torque shock alleviating device in hybrid vehicle

Details Torque shock alleviating device in hybrid vehicle Torque shock alleviating device in hybrid vehicle

1998-08-24

2000-01-04

Mar, Michael

Motor vehicles

Power

Electric

60285, 60297, 180 653, 318376, 701 22, B60K 604

Patent

active

060099658

ABSTRACT:
A torque shock alleviating device in a hybrid vehicle utilizing both an engine and an electric motor as drive sources, whereby a torque shock is not generated when the rich-spiking of the air-fuel mixture is carried out in order to restore the adsorbing ability of an NOx adsorbing device in the hybrid vehicle. When an engine is operated in a lean burn manner, NOx in an exhaust gas is adsorbed to an NOx adsorbing device provided in an exhaust passage. When the adsorbing ability of the NOx adsorbing device reaches a saturated level, a rich-spiking for temporarily enrichening the air-fuel mixture of the engine is carried out to restore the adsorbing ability of the NOx adsorbing device. When the output torque from the engine is increased by the rich-spiking, a regenerative braking force is generated in a motor, thereby moderating the increase in output torque from the engine by such regenerative braking force to alleviate the torque shock. An electric power generated by the regenerative braking is supplied for the charging of a battery.

REFERENCES:
patent: 5323868 (1994-06-01), Kawashima
patent: 5562565 (1996-10-01), Moroto et al.
patent: 5680764 (1997-10-01), Viteri
patent: 5842534 (1998-12-01), Frank
patent: 5848529 (1998-12-01), Katoh et al.
patent: 5862497 (1999-01-01), Yano et al.
patent: 5875864 (1999-03-01), Yano et al.

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