Torque control for direct injected engines using a supplemental

Details Torque control for direct injected engines using a supplemental Torque control for direct injected engines using a supplemental

1998-09-21

2000-06-27

Denion, Thomas

Power plants

Internal combustion engine with treatment or handling of...

Methods

60285, 60286, 180165, 180 652, F01N 300

Patent

active

060792043

ABSTRACT:
A torque control system for a lean burn engine utilizing a supplemental torque apparatus that is operable during the engine mode transition from a lean air/fuel ratio to a rich air/fuel ratio. The supplemental torque apparatus 34, STA, operates to maintain the basic engine torque equation T.sub.e +T.sub.sta =T.sub.d, such that the device or a electrically connected battery 38 absorbs extra engine torque during a predetermined time period and generates engine torque at times other than the predetermined time period. During the predetermined time period, a lean NOx Trap 26 in the exhaust system is purged.

REFERENCES:
patent: 5323868 (1994-06-01), Kawashima
patent: 5588498 (1996-12-01), Kitada
patent: 5609218 (1997-03-01), Yamashita et al.
patent: 5836151 (1998-11-01), Atanasyan et al.
patent: 5894724 (1999-04-01), Minowa et al.
patent: 5978719 (1999-11-01), Yano et al.

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