In-cylinder injection engine with supercharger
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsTetsurou Yamada, Katsuhiko Kikuchi
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Abstract
A fuel injection system for an internal combustion engine, and particularly a supercharged one that employs both an in-cylinder injector and a manifold injector. By using two fuel injectors, one in-cylinder and one in the intake manifold, it is possible to operate under light loads with stratified charge and obtain a good homogenous mixture for combustion in other engine speed and load ranges.
Claims18
An internal combustion engine comprising a pair of relatively moveable components defining a combustion chamber of cyclically varying volume, an induction system for introducing an air charge into said combustion chamber, said induction system having a curved configuration at an intermediate part thereof and leading to a straight section communicating at its downstream end with said combustion chamber, a first fuel injector for injecting fuel directly into said combustion chamber, a second fuel injector for injecting fuel directly into said curved part of said induction system so that it spray axis is disposed centrally of said straight section for mixing with the air delivered to said combustion chamber, and a control for controlling the beginning and ending of injection of said fuel injectors.
An internal combustion engine comprising a pair of relatively moveable components defining a combustion chamber of cyclically varying volume, an induction system comprised of a single induction passage for introducing an air charge into said combustion chamber, a first fuel injector for injecting fuel directly into said combustion chamber, a second fuel injector for injecting fuel directly into said induction system, a supercharger in said induction system upstream of said second fuel injector for pressurizing the air delivered to said combustion chamber and a control for controlling the beginning and ending of injection of said fuel injectors.
Dependencies are inferred from the claim text.