Fuel injection control system for automotive engine
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United States of America Patent
Stats
-
Nov 6, 1990
Grant Date -
N/A
app pub date -
Jul 21, 1989
filing date -
Jul 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure sensor is provided for detecting the pressure of intake air in a cylinder of an engine. A pressure difference between a first cylinder pressure detected after closing an intake valve and a second cylinder pressure after the first cylinder pressure detection and before an ignition timing. The quantity of intake air is calculated based on the pressure difference and the engine seed. A basic fuel injection pulse width in calculated based on the calculated quantity of intake air. A fuel injector is actuated in accordance with the calculated basic fuel injection pulse width for injecting fuel.
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