Operation control device for in-cylinder injection engine
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsYu Motoyama, Ryusuke Katoh
Life of this patent
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Abstract
A fuel injection system and method of operating it for a two-stroke crankcase compression internal combustion engine. The engine is provided with a main fuel injector that injects fuel directly into the combustion chamber and an auxiliary fuel injector that injects fuel into the inductions system. A throttle valve controls the flow through the induction system. The system includes a detector for detecting an abnormality in the operation of the main fuel injector and shuts the main fuel injector down when this occurs and increases the amount of fuel supplied by the auxiliary fuel injection. When this abnormal operating condition occurs, the degree of opening of the throttle valve is also reduced.
Claims39
A fuel injection system for an internal combustion engine having a combustion chamber, an induction system for introducing a charge into said combustion chamber, throttle valve means for controlling the flow through said induction system, a main fuel injector for injecting fuel directly into said combustion chamber, an auxiliary fuel injector for injecting fuel into said induction system, means for sensing an abnormal condition of said main fuel injector, and means for operating said auxiliary fuel injector to supply a different amount of fuel to said engine in the event an abnormal condition of said main fuel injector is sensed.
A method of operating a fuel injection system for an internal combustion engine having a combustion chamber, an induction system for introducing a charge into said combustion chamber, throttle valve means for controlling the flow through the induction system, a main fuel injector for injecting fuel directly into the combustion chamber, an auxiliary fuel injector for injecting fuel into the induction system, comprising the steps of sensing an abnormal condition of the main fuel injector, and operating the auxiliary fuel injector to supply a different amount of fuel to the engine in the event an abnormal condition of the main fuel injector is sensed.
Dependencies are inferred from the claim text.