| 摘要 |
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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