Control system for an engine equipped with exhaust gas recircula

Details Control system for an engine equipped with exhaust gas recircula Control system for an engine equipped with exhaust gas recircula

1998-11-25

2000-05-02

Wolfe, Willis R.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

123300, 123480, F02D 4102

Patent

active

06055956&

ABSTRACT:
An engine control system for a direct injection-spark ignition type of engine which is equipped with a fuel injector for spraying fuel directly into a combustion chamber and an exhaust system having a lean NOx conversion catalyst for lowering an emission level of nitrogen oxides (NOx) in exhaust gas at an air-fuel ratio of .lambda.>1 controls divides a given amount of fuel into two parts which are intermittently delivered through early and late split injection respectively in a intake stroke and controls a fuel injector such that a midpoint between points at which the early and late split injection are timed respectively to start is before a midpoint of a intake stroke while the engine is in a lean fuel charge zone.

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