Fuel injection apparatus for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKeiso Takeda, Tomojirou Sugimoto
Life of this patent
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Abstract
A fuel injection apparatus, for an internal combustion engine equipped with an air-assist unit for atomizing fuel from a fuel injector, includes a nozzle attached to the end of the injector The nozzle is provided with a mixture passage, to effect a mixing of the fuel and air from the air-assist unit, and mixture injection ports through which the mixture is ejected to intake ports. Since the mixture passage is longer than each mixture injection port, an equal mix of fuel and air can be effected during the flow thereof in the mixture passage.
Claims17
A fuel injection apparatus for an internal combustion engine provided with an air-assist unit for atomizing fuel ejected from a fuel injector, said apparatus having:
- a nozzle attached to the fuel-injection end of said fuel injector;
- a mixture passage provided in said nozzle and positioned in a direction of ejection on the downstream of side of a nozzle opening of said fuel injector, to thereby effect a mixing of the ejected fuel and air supplied from said air-assist unit;
- means for heating said mixture passage, wherein said means for heating includes a heater surrounding said nozzle;
- and
- mixture injection ports, each formed in said nozzle so as to be shorter than a length of said mixture passage, and to be connected with an end thereof, to thereby diverge said mixture of fuel and air flowing said mixture passage in desired directions.
Dependencies are inferred from the claim text.