| 摘要 |
A spark ignition gasoline internal combustion engine separates a gasoline fuel supply into a higher boiling point fraction and a lower boiling point fraction, supplies the boiling point fractions to combustion chambers of the engine, and introduces the separate boiling point fractions into the combustion chambers to produce a stratified charge with the different fractions residing in different parts of the combustion chamber. In accordance with a preferred embodiment, charge stratification under "full load" operating conditions is such that in each combustion chamber the lower boiling point fraction is ignited by a spark plug, which in turn produces a propagating flame that ignites the higher boiling point fraction concentrated in the end gas regions of the combustion chamber.
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