Air intake device for internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorsOsamu OOKI, Kazuki IIJIMA
Life of this patent
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Abstract
An air intake device for an internal combustion engine of the present invention includes a water discharge passage extending from a bottom surface of a control valve housing part recessed in a housing passage forming part of an air intake passage to an air intake port. The water discharge passage is formed independently from the air intake passage, and includes: a water collection groove recessed in the bottom surface; a water discharge hole formed penetrating a cover of a valve control housing; and a water discharge hole penetrating a flange part of an insert inserted into the air intake port. The downstream end of the water discharge hole is connected to a space defined between an air intake port inner wall surface and an insert cylindrical part.
Claims5
-5. (canceled)
An air intake device for an internal combustion engine in which a control valve opening and closing a part of a passage cross section of an air intake passage is disposed on an upstream side from an air intake port formed in a cylinder head, comprising:
- an insert configured to guide a main flow of intake air into the air intake port, the main flow of the intake air which has passed through the control valve, wherein the insert includes:
- a cylindrical part having a cylindrical shape which is inserted into the air intake port;
- and
- a flange part which is provided around an upstream side opening end of the cylindrical part and which is sandwiched between a control valve housing which houses the control valve and the cylinder head,
- a space defined between an inner wall surface of the air intake port and an outer wall surface of the cylindrical part on a whole outside of the cylindrical part;
- and
- a water discharge passage formed extending from a bottom surface of the air intake passage at which the control valve is positioned to the space, wherein the water discharge passage penetrates the flange part.
Dependencies are inferred from the claim text.