Air intake device for internal combustion engine

Patent metadata

Field	Value
Publication number	US-10539103-B2
Application number	US-201515776251-A
Country	US
Kind code	B2
Filing date	Nov 20, 2015
Priority date	Nov 20, 2015
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

An intake device for an internal combustion engine, the intake device includes: a housing constituting an intake passage; a valve element including a valve portion arranged to open and close a part of the intake passage, and thereby to strengthen an intake air flow; and a receiving portion which is formed on a bottom wall of an aeration passage of the housing, and which is recessed in an arc shape along a movement trajectory of the valve portion, the valve portion including an outer side surface which confronts a bottom surface of the receiving portion, which has an arc shape, and which includes a seal portion that has a raised shape, and that extends along an edge portion on an upstream side of an intake direction.

First claim

The invention claimed is:

1. An intake device for an internal combustion engine, the intake device comprising:
a housing constituting an intake passage;
a valve element including a valve portion arranged to open and close a part of the intake passage, and thereby to strengthen an intake air flow; and
a receiving portion which is formed on a bottom wall of an aeration passage of the housing, and which is recessed in an arc shape along a movement trajectory of the valve portion,
the valve portion including an outer side surface which confronts a bottom surface of the receiving portion, which has an arc shape, and which includes a seal portion that has a raised shape, and that extends along an edge portion on an upstream side of an intake direction, and second seal portions each of which has a raised shape, and which are provided along an edge portion on a downstream side of the intake direction only on both sides of an aeration window formed at a center of the edge portion on the downstream side of the intake direction,
wherein the valve element includes a pair of side wall portions positioned at both ends of the valve portion; a side seal portion is provided on an outer side surface of each of the pair of the side wall portions confronting side wall surfaces of the intake passage; each of the side seal portions has a raised shape; and each of the side seal portions is continuous with the seal portion.

2. The intake device for the internal combustion engine as claimed in claim 1 , wherein the seal portion and the second seal portion confront the bottom surface of the receiving portion through a minute clearance at a valve opening position.

3. The intake device for the internal combustion engine as claimed in claim 1 , wherein the valve element includes a pair of side wall portions positioned at both ends of the valve portion; a second side seal portion is provided on an outer side surface of each of the pair of the side wall portions confronting side wall surfaces of the intake passage; each of the second side seal portions has a raised shape; and each of the second side seal portions is continuous with one of the second seal portions.

Assignees

• Nissan Motor

Inventors

• Ooki Osamu

Classifications

• F02M35/112

  for engines with cylinders all in one line · CPC title

• F02B75/20

  with cylinders all in one line · CPC title

• F02M35/104

  Intake manifolds · CPC title

• F02M35/10255 Primary

  Arrangements of valves; Multi-way valves (F02M35/10032 takes precedence; valves in the plenum chamber F02M35/10065; check valves F02M35/10275) · CPC title

• F02M35/10

  Air intakes; Induction systems · CPC title