Patent ID: 6135088
Filing Date: 2000-10-24
Classification: F02B,F02M,Y02T

Abstract:
A method of operation of a four-stroke internal combustion engine having an intake, a combustion chamber coupled to the intake, an exhaust coupled to the combustion chamber and an exhaust recirculation device connecting the exhaust to the intake comprising:admitting exhaust gas into the combustion chamber which is recirculated by the recirculation device from the exhaust into the intake;thereafter admitting through the intake into the combustion chamber a mixture of air and fuel to be combusted which produces a stratification in the combustion chamber of the mixture of air and fuel and the exhaust gas; andself-igniting the stratified contents of the combustion chamber; and whereinadmission of the mixture of air and fuel occurs at a start of a compression stage of the combustion chamber.