Intake device of internal combustion engine
AssigneeSubaru Corporation
InventorMasaaki Kato
Life of this patent
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Abstract
An intake device of an internal combustion engine includes a partition, a control valve, and a third passage. The partition divides an interior of an intake pipe that couples with a combustion chamber into a first passage and a second passage. The control valve is capable of opening and closing the first passage. The third passage opens at or near a coupling site between the partition and the intake pipe on an inner face of the second passage. The third passage is configured to be capable of sucking in at least a part of a boundary layer produced at or near the coupling site by a vapor flowing through the second passage in a state in which the control valve is working in a direction of closing the first passage.
Claims20
An intake device of an internal combustion engine, comprising:
- a partition that divides an interior of an intake pipe that couples with a combustion chamber into a first passage and a second passage, the first passage being on an upper side of the partition and second passage being on a lower side of the partition;
- a control valve capable of opening and closing the first passage, the control valve being disposed on an upstream side of the intake pipe relative to the first passage and the second passage;
- and
- a third passage that opens at or near a coupling site between the partition and the intake pipe on an inner face of the second passage,
- wherein the third passage is configured to be capable of sucking in at least a part of a boundary layer produced at or near the coupling site by a vapor flowing through the second passage in a state in which the control valve is working in a direction of closing the first passage.
An intake device of an internal combustion engine, comprising:
- a partition that divides an interior of an intake pipe that couples with a combustion chamber into a first passage and a second passage;
- a control valve capable of opening and closing the first passage;
- and
- a third passage that opens at or near a coupling site between the partition and the intake pipe on an inner face of the second passage,
- wherein the third passage is configured to suck in at least a part of a boundary layer produced at or near the coupling site by a vapor flowing through the second passage in a state in which the control valve is working in a direction of closing the first passage,
- wherein a width of an opening of the third passage in a direction at a right angle to an axial direction of the intake pipe is greater than zero and less than 6.6 mm.
An intake device of an internal combustion engine, comprising:
- a partition that divides an interior of an intake pipe that couples with a combustion chamber into a first passage and a second passage;
- a control valve capable of opening and closing the first passage;
- and
- a third passage that opens at or near a coupling site between the partition and the intake pipe on an inner face of the second passage, wherein
- the third passage is configured to suck in at least a part of a boundary layer produced at or near the coupling site by a vapor flowing through the second passage in a state in which the control valve is working in a direction of closing the first passage,
- wherein an opening of the third passage is located within a distance that is 40 times an average diameter of the second passage from a downstream end of the partition in an axial direction of the intake pipe.
Dependencies are inferred from the claim text.