Internal combustion engine with exhaust filter rejuvenation

Details Internal combustion engine with exhaust filter rejuvenation Internal combustion engine with exhaust filter rejuvenation

1981-07-02

1983-07-05

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60303, 60311, 123198F, F01N 302

Patent

active

043910955

ABSTRACT:
Control means for a diesel engine in which the engine's power output can be varied by eliminating the function of one or more cylinders during a period of engine operation. Said control means immobilizes at least one, and preferably a number of the engine's cylinders by maintaining the respective intake, and optionally the exhaust valves, in a fixed position. During periods of cylinder immobilization, the engine exhaust gas filter is rejuvenated by incinerating combustible particles therefrom. When exhaust gas is at a relatively low temperature, particle incineration is achieved by injecting fuel into the immobilized cylinder. The fuel is carried by the exhaust gas stream into the filter. In the latter, the fuel/gas mixture when contacted by a catalyst bed, ignites to raise the gas to a sufficient temperature to ignite retained combustible particles.

REFERENCES:
patent: 4165610 (1979-08-01), Iizuka
patent: 4248198 (1981-02-01), Deutschmann
patent: 4274373 (1981-06-01), Sugasawa
patent: 4284042 (1981-08-01), Springer
patent: 4319896 (1982-03-01), Sweeney
patent: 4333428 (1982-06-01), Tanaka

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