Method and system for pre-ignition control
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United States of America Patent
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May 8, 2012
Grant Date -
Nov 3, 2011
app pub date -
Apr 20, 2011
filing date -
Apr 20, 2011
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Abstract
Methods and systems are provided for addressing cylinder pre-ignition by adjusting a spray angle of fuel injected into a cylinder responsive to an indication of pre-ignition. A spray pattern of fuel injected in the cylinder is varied based on a cylinder pre-ignition count to reduce cylinder wall impingement of injected fuel while improving air-fuel mixing in the cylinder.
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