Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1981-07-24
1983-08-02
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Methods
60286, 60297, 60303, 60311, 123198F, F01N 302
Patent
active
043958753
ABSTRACT:
Method for rejuvenating the exhaust gas filter 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 method includes immobilizing 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. When exhaust gas is at a relatively low temperature, particle incineration is achieved by periodically injecting a small amount of fuel into the immobilized cylinder. The fuel is carried by the exhaust gas stream into the filter, where it is contacted by a catalyst bed to ignite the gas and to thereby raise it 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: 4322387 (1982-03-01), Virk et al.
patent: 4333428 (1982-06-01), Tanaka
Burns Robert B.
Hart Douglas
Kulason Robert A.
Ries Carl G.
Texaco Inc.
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