Patent ID: 6305351
Filing Date: 2001-10-23
Classification: F02D,Y02T

Abstract:
A method of controlling the operation of a gas fuelled internal combustion engine, the engine having a gas injector for injecting gaseous fuel into each cylinder and an inlet manifold through which air flows into each cylinder of the engine, the inlet manifold having a manifold valve to control the flow of air into the inlet manifold, the method comprising the steps of:detecting the current throttle position of the engine;detecting a manifold air parameter representative of the mass of air flowing through the inlet manifold;deriving a desired load value for the engine, based on said current throttle position; and,calculating a manifold valve position based on said desired load value and manifold air parameter, wherein the correct amount of air is delivered to the engine cylinders responsive to current throttle position to achieve optimum engine performance.