1992-02-01

Improving the Operation of Gasoline and Methanol Fuelled Spark Ignition Engines Under Canadian Winter Conditions 920011

This paper reviews the practice of using mixture enrichment to address cold starting and warm-up difficulties. Excess fuel requirements for gasoline and methanol-based fuels such as M85 are discussed, and the environmental costs inherent in this approach are assessed. A rationale is presented for adopting cold starting approaches which avoid the need for excessively rich mixtures. A synergistic combination of plasma jet ignition and prompt exhaust gas recirculation is proposed as a means of realizing this goal and recent experimental results for both elements of the system are described.

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