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Fuel injection strategy for reduced cold start emission from direct injection gasoline engines
Fuel injection strategy for reduced cold start emission from direct injection gasoline engines
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机译:减少直喷汽油发动机冷启动排放的燃油喷射策略
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摘要
A system, comprising of an engine having a cylinder therein, a fuel injector coupled to said cylinder and configured to directly inject fuel into said cylinder, a fuel system coupled to said injector, and a controller configured to control engine starting operation, wherein during a start, said fuel injector performs a first fuel injection at least partially during an exhaust stroke of said cylinder, where fuel from said first fuel injection is mixed with air inducted at least during an intake stroke following said exhaust stroke, said fuel injector performing a second fuel injection after said first fuel injection, and combusting fuel from said first and second fuel injections to perform a combustion event in said cylinder.
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