Patent ID: 6651677
Filing Date: 2003-11-25
Classification: F02B,F02D,F02F,Y02T

Abstract:
A method of controlling the timing of ignition of a compression ignition internal combustion engine of a premixed mixture type in which a premixed mixture gas is ignited under compression by a piston in a combustion chamber comprising: a fuel injector for directly injecting fuel into the combustion chamber so as to continuously or stepwise increase a volume of fuel spray impinging upon an inner wall of the combustion chamber as engine speed is changed from a low value to a high value in a range of compression ignition operation and to change the volume of fuel spray impinging upon the inner wall surface of the combustion chamber from the fuel injector in dependence upon the timing of fuel injection in a compression ignition operation range, wherein the fuel is injected in the vicinity of the bottom dead center of intake when the engine speed is low, but the fuel is injected in the vicinity of the top dead center of intake when the engine speed is high.