Method for operating an engine arrangement
AssigneeRenault Trucks
InventorsNicolas Auffret, Romain Le Forestier
Life of this patent
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Abstract
A method is provided for operating an internal combustion engine having at least one cylinder, said engine operating according to a four stokes cycle. The engine includes at least one controlled intake port to control communication of the combustion chamber with an intake line. The intake port is controlled to achieve a main open phase mainly during the intake stroke. The intake port is controlled to achieve an auxiliary open phase during the power stroke in view of heating the engine at cold start.
Claims13
Method for operating an internal combustion engine having at least one cylinder in which a piston connected to a crankshaft is displaced between a top dead center position and a bottom dead center position, thereby defining in the cylinder a variable volume combustion chamber, the engine operating according to a four stokes cycle including an intake stroke, a compression stroke, a power stroke, and an exhaust stroke, wherein the engine comprises at least one controlled intake port and at least one controlled exhaust port to control communication of the combustion chamber respectively with an intake line and with an exhaust line, comprising
- controlling the intake port to achieve a main open phase mainly during the intake stroke,
- controlling the exhaust port to achieve a main open phase mainly during the exhaust stroke, and
- controlling the intake port to achieve an auxiliary open phase during the power stroke.
Dependencies are inferred from the claim text.