Setting device of basic fuel injection amount for an internal combustion engine
A setting device of basic fuel injection amount for an internal combustion engine in an operating region of acceleration is described which consists of an engine load detection means which detects an engine load; an intake airflow detection means for detecting an amount of intake airflow of the engine, a throttle valve opening detection means for detecting an area of opening of a throttle valve interposed in an intake area of opening of a throttle air channel of the engine, an engine velocity detection means for detecting a velocity of the engine; a change ratio calculation means which calculates a ratio of change in the opening area of the throttle valve, based on the detected area of opening of the throttle valve; an engine acceleration judgement means which judges that the engine is accelerating when the calculated ratio of change in the opening area of the throttle valve equals or exceeds a predetermined value toward its open position;an intake airflow modification means which modifies the detected amount of intake airflow based on the change ratio of opening area in the throttle valve, the engine load, and the engine velocity, only when the engine is judged to be at acceleration status; and a setting means of basic fuel injection amount which sets the basic amount of fuel injection, based on the detected value of the engine velocity and one of the detected amount of intake air flow and the modified amount of intake airflow.
- Assignee:
- Nissan Motor Co., Ltd., Yokohama
- Patent Number(s):
- US 4831987
- OSTI ID:
- 5837244
- Country of Publication:
- United States
- Language:
- English
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