System and method for reducing knock and preignition in an internal combustion engine
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United States of America Patent
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May 19, 2009
Grant Date -
Sep 20, 2007
app pub date -
Mar 17, 2006
filing date -
Mar 17, 2006
priority date (Note) -
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Abstract
A system for an engine of a vehicle, comprising of a combustion chamber located in the engine; a delivery system configured to deliver a fuel and a fluid to at least the combustion chamber in varying ratios, wherein the fluid includes at least an alcohol; wherein the delivery system includes at least a direct injector configured to inject at least the fluid directly into the combustion chamber; and a control system configured to advance the timing of the fluid delivered to the combustion chamber by the direct injector to reduce the likelihood of knock; and retard the timing of the fluid delivered to the combustion chamber by the direct injector to reduce the likelihood of preignition.
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