Internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsShizuo Sasaki, Yoshiyuki Tamaki
Life of this patent
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Abstract
An internal combustion engine comprising a fuel injector for injecting fuel directly into a cylinder and a calculating device for calculating a calculated amount of fuel to be injected on the basis of an engine operating state. The fuel injector injects all of the calculated amount of fuel during a compression stroke when the calculated amount of fuel is smaller than a predetermined first amount of fuel, and injects a part of the calculated amount of fuel during an approximately first half of an intake stroke and injects a remaining part of the calculated amount of fuel during a compression stroke when the calculated amount of fuel is equal to or larger than a predetermined second amount of fuel which is larger than the predetermined first amount of fuel.
Claims31
An internal combustion engine having a piston introduced into a cylinder and a spark plug arranged in a cylinder head, said engine comprising:
- a fuel injector for injecting fuel directly into the cylinder;
- detecting means for detecting an engine operating state;
- calculating means for calculating a calculated amount of fuel to be injected on the basis of said engine operating state detected by said detecting means;
- and
- a control means for controlling said fuel injector to inject all of said calculated amount of fuel during a compression stroke when said calculated amount of fuel is smaller than a predetermined first amount of fuel, inject a part of said calculated amount of fuel during approximately a first half of an intake stroke, and inject a remaining part of said calculated amount of fuel during a compression stroke when said calculated amount of fuel is equal to or larger than said predetermined first amount of fuel and smaller than a predetermined second amount of fuel which is larger than said predetermined first amount of fuel.
Dependencies are inferred from the claim text.