Internal combustion engine
AssigneeHonda Motor Co., Ltd.
InventorsYoshitaka Maeda, Suguru Fukuda
Life of this patent
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Abstract
The present disclosure is intended to provide an internal combustion engine that can inhibit fuel from adhering to a piston and can reduce generation of soot. An internal combustion engine includes a piston, a cylinder accommodating the piston, and an injector including a nozzle that has a plurality of nozzle holes configured to inject fuel into the cylinder from above the cylinder. Among the plurality of nozzle holes, a sixth nozzle hole an axial direction of which is the most deflected toward the piston has a nozzle hole diameter larger than nozzle hole diameters of the other nozzle holes, and the nozzle hole diameter of the sixth nozzle hole corresponds to at least 20% of the total of the nozzle hole diameters of the other nozzle holes.
Claims2
An internal combustion engine comprising:
- a piston;
- a cylinder accommodating the piston;
- and
- an injector comprising a nozzle that has a plurality of nozzle holes configured to inject fuel into the cylinder from above the cylinder,
- wherein among the plurality of nozzle holes, one nozzle hole, an axial direction of which is most deflected toward the piston, has a nozzle hole diameter larger than nozzle hole diameters of other nozzle holes,
- wherein the nozzle hole diameter of the one nozzle hole corresponds to at least 20% of a total of the nozzle hole diameters of the other nozzle holes,
- wherein the plurality of nozzle holes comprise:
- a first nozzle hole as an uppermost one among the plurality of nozzle hole;
- a sixth nozzle hole as a lowermost one among the plurality of nozzle holes, the sixth nozzle hole having the axial direction that is the most deflected toward the piston;
- a second nozzle hole and a third nozzle hole that are disposed at positions symmetrical to each other with respect to a center line passing through a center of the first nozzle hole and a center of the sixth nozzle hole, and that are adjacent to the first nozzle hole;
- and
- a fourth nozzle hole and a fifth nozzle hole that are disposed at positions symmetrical to each other with respect to the center line and that are adjacent to the sixth nozzle hole, and
- wherein the nozzle hole diameters of the second and third nozzle holes are smaller than those of the first, fourth, and fifth nozzle holes.
Dependencies are inferred from the claim text.