Internal combustion engine and method of operation

Details Internal combustion engine and method of operation Internal combustion engine and method of operation

F - Mech Eng,Light,Heat,Weapons

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123/42, 123/60,

F02M 7/00 (2006.01) F02B 1/06 (2006.01) F02B 19/10 (2006.01) F02D 37/02 (2006.01) F02D 41/24 (2006.01) F02P 5/15 (2006.01)

Patent

CA 1053099

ABSTRACT OF THE DISCLOSURE All of combustion chambers receive a lean air- fuel charge at low and medium engine power demands. As the engine power demand increases, a rich air-fuel charge is supplied to one or a suitable number of the combustion chambers with countermeasures being provided to suppress the formation of nitrogen oxides, such as, an exhaust gas recirculation (EGR) and the torch effect of a torch ignition system, the remaining combustion chambers, if any, receiving a lean air-fuel charge. Exhaust gases from all of the combustion chambers are converged to oxidize hydrocarbons and carbon monoxide formed by the combustion of the rich air-fuel charge when the combustion chambers respec- tively receive rich and lean air-fuel charges.

245535

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