Internal combustion engine
AssigneeHitachi, Ltd.
InventorsYoshio Okamoto, Ayumu Miyajima, Yuzo Kadomukai, Motoyuki Abe, Shigenori Togashi, Hiromasa Kubo, Hiroshi Fujii, Toru Ishikawa, Toshiharu Nogi
Life of this patent
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Abstract
A fuel spray is directed toward an ignition plug. To an injection bole outlet portion of a swirl type fuel injector, an L-shaped cut out is provided, and the fuel spray is formed with a deflection fuel spray which has a strong swirl component that can inject with a large quantity. Accordingly, a reduction in the discharge HC amount and an improvement in the fuel consumption can be attained.
Claims5
In an internal combustion engine comprising a cylinder, a piston which reciprocates in said cylinder, an intake means for taking an air into said cylinder, an exhaust means for discharging a combustion gas from said cylinder, a fuel injector for injecting directly a fuel into said cylinder, a fuel supply means for supplying the fuel into said fuel injector, and an ignition means for igniting an air-fuel mixture which is the air taken in said cylinder according to said intake means and the fuel injected into said cylinder using said fuel injector, the internal combustion engine characterized in that
- said fuel injector generates a fuel spray which has a cut out portion in which a fuel spray is thin in a peripheral direction in a lateral cross-section crossing a valve axial line of the fuel spray and injects said cut-out portion in which the fuel spray is thin toward a side of said piston, and
- the air taken in from said intake means is flown toward a side of said piston of the fuel spray to a side of said ignition plug.
In an internal combustion engine comprising a cylinder, a piston which reciprocates in said cylinder, an intake means for taking an air into said cylinder, an exhaust means for discharging a combustion gas from said cylinder, a fuel injector for injecting directly a fuel into said cylinder, a fuel supply means for supplying the fuel into said fuel injector, and an ignition means for igniting an air-fuel mixture which is the air taken in said cylinder according to said intake means and the fuel injected to said cylinder using to said fuel injector, the internal combustion engine characterized in that
- said fuel injector generates a fuel spray which has a cut-out portion in which a fuel spray is thin in a peripheral direction in a lateral cross-section crossing a valve axial line of the fuel spray and injects at least two times said cut-out portion in which the fuel spray is thin toward a side of said piston, during one time timing.
Dependencies are inferred from the claim text.