Patent ID: 6575129
Filing Date: 2003-06-10
Classification: F01L,F02D,Y02T

Abstract:
A method of reducing emissions in the exhaust gases of an internal combustion engine having at least one cylinder supplied with an air/fuel mixture when a crankshaft of the internal combustion engine rotates, at least one inlet valve, at least one inlet duct connected to the inlet valve, at least one exhaust valve, control members for controlling the opening and closing of the inlet and exhaust valves, and a piston reciprocating between a top dead-center position and a bottom dead-center position in the cylinder, the method comprising the steps of:supplying an air/fuel mixture with a lambda value greater than 1 to the cylinder, controlling the internal combustion engine so that it works at high load, and controlling the inlet valve so that it opens after the piston has passed the top dead-center position.