| 摘要 |
A fuel control system is provided for an internal combustion engine having at least one combustion chamber, an intake air passageway, a multipoint fuel injector associated with each engine combustion chamber and a cold start fuel injector having a fuel outlet open to the intake air passageway. An air valve has an air inlet fluidly connected to the intake air passage and an air outlet fluidly connected to the cold start fuel injector. This air valve movable between an open position and a closed position where in the open position, air flow through the air valve is directed to the cold start fuel injector. During a cold start engine operating condition, air flow through the air valve and cold start fuel injector enhances fuel atomization of the fuel from the cold start fuel injector thereby reducing the desirable engine emissions, and particularly, hydrocarbon engine emissions.
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