Patent ID: 6308682
Filing Date: 2001-10-30
Classification: F02B

Abstract:
A gasoline internal combustion engine having at least one spark plug in cooperation with a corresponding combustion chamber, the engine comprising:fuel separating means for separating gasoline fuel into a higher boiling point fraction and a lower boiling point fraction;supply means for separately supplying the boiling point fractions to the combustion chamber; andmeans for introducing the separate boiling point fractions into the combustion chamber so as to produce a stratified charge with the higher and lower boiling point fractions residing in different parts of the combustion chamber, wherein the charge under full load operating conditions of the engine is such that the lower boiling point fraction is ignited by the spark plug to burn first and initiate a flame that propagates through the charge, and the higher boiling point fraction is the last to be ignited by the propagating flame.