Method and system for pre-ignition control
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United States of America Patent
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Apr 25, 2017
Grant Date -
Dec 3, 2015
app pub date -
May 28, 2014
filing date -
May 28, 2014
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Abstract
Methods and systems are provided for enriching an engine cylinder in response to an indication of pre-ignition. The cylinder is enriched by initially increasing a proportion of fuel delivered to the cylinder via a port injector on an open intake valve event. The cylinder is then continued to be enriched by increasing a proportion of fuel delivered to the cylinder via a direct injector.
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