Fuel Injection Apparatus

摘要

A fuel injection apparatus includes an injector that injects fuel into a combustion chamber or an intake port of an internal combustion engine; an injection amount controller that controls a fuel injection amount of the injector and corrects the fuel injection amount to increase when the internal combustion engine is in a given cold state; an air-fuel ratio detector that detects an air-fuel ratio of the internal combustion engine; and an air-fuel ratio rich fault determiner that determines an air-fuel ratio rich fault when the air-fuel ratio exists on a rich side than a predetermined determination value. The air-fuel ratio rich fault determiner shifts the predetermined determination value toward the rich side in accordance with the increasing correction of the fuel injection amount so as to correct the predetermined determination value.

主权项

1. A fuel injection apparatus, comprising:
an injector that injects fuel into a combustion chamber or an intake port of an internal combustion engine; an injection amount controller that controls a fuel injection amount of the injector and corrects the fuel injection amount to increase when the internal combustion engine is in a given cold state; an air-fuel ratio detector that detects an air-fuel ratio in the internal combustion engine; and an air-fuel ratio rich fault determiner that determines an air-fuel ratio rich fault when the air-fuel ratio is on a rich side than a predetermined determination value, wherein the air-fuel ratio rich fault determiner shifts the predetermined determination value toward the rich side in accordance with the increasing correction of the fuel injection amount so as to correct the predetermined determination value.