Abstract: A method of reducing emissions in the exhaust gases of an internal combustion engine is disclosed. The engine includes at least one cylinder supplied with an air/fuel mixture when a crankshaft of the internal combustion engine rotates, at least one intake valve, at least one exhaust valve, control members for controlling the opening and closing of the intake and exhaust valves, and a piston reciprocating between a top dead-center position and a bottom dead-center position in the cylinder. The method includes supplying an air/fuel mixture with a lambda value greater than 1 to the cylinder, controlling the intake valve so that it opens after the piston has passed the top dead-center position, controlling the exhaust valve so that it opens before the piston has passed the bottom dead-center position, and controlling the exhaust valve so that it closes before the intake valve opens.

Abstract: A method of reducing emissions in the exhaust gases of an internal combustion engine that has at least one cylinder to which an air/fuel mixture is supplied when a crankshaft of the internal combustion engine is rotated, at least one intake valve, at least one exhaust valve, and a piston reciprocating between a top dead-center position and a bottom dead-center position in the cylinder. The method comprises the following steps: an air/fuel mixture with a lambda value greater than 1 is supplied to the cylinder, an electric motor/generator connected to the crankshaft maintains an essentially constant predetermined speed of the crankshaft, and the exhaust valve is controlled so that it opens before the piston has passed the bottom dead-center position is disclosed.

Abstract: The invention discloses a method of reducing emissions in the exhaust gases of an internal combustion engine having at least one cylinder to which an air/fuel mixture is supplied when a crankshaft of the internal combustion engine rotates, at least one 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 includes the steps of supplying an air/fuel mixture with 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. According to an embodiment of the invention, the internal combustion engine is controlled so that the crankshaft rotates at an essentially constant speed within a range of about 1000 to about 2000 rpm.

Abstract: A method of reducing emissions in the exhaust gases of an internal combustion engine that has at least one cylinder to which an air/fuel mixture is supplied when a crankshaft of the internal combustion engine is rotated, at least one intake valve, at least one exhaust valve, and a piston reciprocating between a top dead-center position and a bottom dead-center position in the cylinder. The method comprises the following steps: an air/fuel mixture with a lambda value greater than 1 is supplied to the cylinder, an electric motor/generator connected to the crankshaft maintains an essentially constant predetermined speed of the crankshaft, and the exhaust valve is controlled so that it opens before the piston has passed the bottom dead-center position is disclosed.

Abstract: A method of reducing emissions in the exhaust gases of an internal combustion engine is disclosed. The engine includes at least one cylinder supplied with an air/fuel mixture when a crankshaft of the internal combustion engine rotates, at least one intake valve, at least one exhaust valve, control members for controlling the opening and closing of the intake and exhaust valves, and a piston reciprocating between a top dead-center position and a bottom dead-center position in the cylinder. The method includes supplying an air/fuel mixture with a lambda value greater than 1 to the cylinder, controlling the intake valve so that it opens after the piston has passed the top dead-center position, controlling the exhaust valve so that it opens before the piston has passed the bottom dead-center position, and controlling the exhaust valve so that it closes before the intake valve opens.

Abstract: The invention discloses a method of reducing emissions in the exhaust gases of an internal combustion engine having at least one cylinder to which an air/fuel mixture is supplied when a crankshaft of the internal combustion engine rotates, at least one 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 includes the steps of supplying an air/fuel mixture with 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. According to an embodiment of the invention, the internal combustion engine is controlled so that the crankshaft rotates at an essentially constant speed within a range of about 1000 to about 2000 rpm.