Method for controlling the operation of a cylinder for an internal combustion engine
First Claim
1. Method for controlling the operation of a cylinder of an internal combustion engine of the four-stroke, multi-cylinder type, said cylinder cooperating with at least one fuel injector, an intake valve, an exhaust valve, operating members for controlling the opening of the valves according to the course of the cycle, and means driven by an engine control computer according to predetermined operating conditions of said engine to deactivate or activate selectively said valves of said cylinder, wherein the deactivation of said valves is performed simultaneously, and the deactivation of said valves is performed in the course of a cycle, at a time coinciding substantially with the middle of the period extending between the computer-calculated consecutive opening time of the intake valve (OI) and opening time of the exhaust valve (OE),wherein said driven means have a delay between their control by said computer and the actual activation or deactivation of said valves, and this delay is taken into account to perform the control of said means, andwherein an error value is determined on the measurement of said delay.
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Accused Products
Abstract
The invention relates to a method for controlling the operation of a cylinder for a multi-cylinder four-stroke internal combustion engine, wherein said cylinder interacts with at least one fuel injector, an intake valve, an exhaust valve, operation members for controlling the opening of the valves according to a cycle running and means driven by an engine control computer according to the predetermined operation conditions of the engine for selectively opening or closing said cylinder valves, wherein the deactivation of the valves is carried out simultaneously in the middle of a cycle at a time approximately coinciding with the middle of a time extending between the theoretical consecutive opening times of the intake (OI) and the exhaust (OE) valves.
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Citations
14 Claims
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1. Method for controlling the operation of a cylinder of an internal combustion engine of the four-stroke, multi-cylinder type, said cylinder cooperating with at least one fuel injector, an intake valve, an exhaust valve, operating members for controlling the opening of the valves according to the course of the cycle, and means driven by an engine control computer according to predetermined operating conditions of said engine to deactivate or activate selectively said valves of said cylinder, wherein the deactivation of said valves is performed simultaneously, and the deactivation of said valves is performed in the course of a cycle, at a time coinciding substantially with the middle of the period extending between the computer-calculated consecutive opening time of the intake valve (OI) and opening time of the exhaust valve (OE),
wherein said driven means have a delay between their control by said computer and the actual activation or deactivation of said valves, and this delay is taken into account to perform the control of said means, and wherein an error value is determined on the measurement of said delay.
Specification