Patent ID: 6497213
Filing Date: 2002-12-24
Classification: F02B,F02D,F02M,Y02T

Abstract:
A lean burn internal combustion engine having at least one cylinder with a piston reciprocating therein to define a combustion chamber, comprising:a first device for supplying first oxygen containing gas to the combustion chamber; a second device for supplying second oxygen containing gas to the combustion chamber for producing stratification, within the combustion chamber, of first gas content with second gas content, the first gas being higher in temperature than the second gas; and a fuel injection system for carrying out a first injection of gasoline fuel into the combustion chamber for dispersion within the second gas content, and for carrying out a second injection of gasoline fuel into the combustion chamber for dispersion within the first gas content, thereby to accomplish auto-ignition of gasoline fuel within the first gas content of the combustion chamber.