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US 6,006,720 AGranted
Internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHiromichi Yanagihara, Yasuo Sato
Life of this patent
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Abstract
An internal combustion engine comprising a fuel injector arranged in a combustion chamber. A fuel is injected at a timing when the temperature T of the fuel particles fed into the combustion chamber rises past the vicinity of a minimum temperature of a cool flame region during a compression stroke and reaches a reaction stagnation region near the top dead center of the compression stroke and the fuel particles are dispersed throughout the combustion chamber as a whole near the top dead center of the compression stroke.
Claims11
An internal combustion engine comprising:
- a combustion chamber;
- a fuel injector arranged in the combustion chamber;
- and
- means for controlling an injection of fuel to the combustion chamber at a completion timing selected from one of a timing during a compression stroke and a timing at a predetermined crank angle during a suction stroke, the completion timing being advanced by a predetermined crank angle relative to a crank angle at which a combustion chamber temperature reaches a fuel boiling point, the injection control means controlling a mean particle size of the injected fuel so that, at top dead center of the compression stroke, a fuel particle temperature reaches a boiling point of a main ingredient of the fuel determined based on a pressure in the combustion chamber, thereby preventing evaporation of the fuel due to boiling of the main ingredient until top dead center of the compression stroke, the completion timing determined when the fuel is gasoline being advanced relative to the completion timing determined when the fuel is light oil.
1 more element
Dependencies are inferred from the claim text.