Intake device of internal combustion engine

Patent metadata

Field	Value
Publication number	US-10184362-B2
Application number	US-201715464945-A
Country	US
Kind code	B2
Filing date	Mar 21, 2017
Priority date	Mar 24, 2016
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

An intake device of an internal combustion engine, includes: a plurality of intake ports which have outer walls and partition walls and are adjacent to each other via the partition walls; a valve body which is provided in each of the intake ports, and switches a flow path of the intake port by rotation around a rotation shaft; a holding member which is installed on each of the outer walls and the partition walls; and a rolling bearing which is mounted on at least one of the holding members, and supports the valve body to be freely rotatable, wherein the holding member includes a wall surface between the rolling bearing and the valve body in a direction in which the rotation shaft extends.

First claim

What is claimed is:

1. An intake device of an internal combustion engine, comprising:
a plurality of intake ports which have outer walls and partition walls and are adjacent to each other via the partition walls;
a valve body which is provided in each of the intake ports, and switches a flow path of the intake port by rotation around a rotation shaft;
a holding member which is installed on each of the outer walls and the partition walls; and
a rolling bearing which is mounted on at least one of the holding members, and supports the valve body to be freely rotatable,
wherein the holding member includes a wall surface between the rolling bearing and the valve body in a direction in which the rotation shaft extends, the wall surface of the holding member being positioned towards the valve body, relative to a surface of the rolling bearing facing the valve body, in the direction in which the rotation shaft extends.

2. The intake device of an internal combustion engine according to claim 1 ,
wherein the wall surface opposes and being close to at least a part of a sealing unit formed around the valve body.

3. The intake device of an internal combustion engine according to claim 1 ,
wherein the holding member installed on the partition wall includes a first member and a second member, and
wherein the rolling bearing is mounted between the first member and the second member in the direction in which the rotation shaft extends.

4. The intake device of an internal combustion engine according to claim 2 ,
wherein the holding member installed on the partition wall includes a first member and a second member, and
wherein the rolling bearing is mounted between the first member and the second member in the direction in which the rotation shaft extends.

5. The intake device of an internal combustion engine according to claim 2 ,
wherein the wall surface abuts against the sealing unit in a state where the valve body is closed when the sealing unit abuts against a sealing surface formed in the intake port.

6. The intake device of an internal combustion engine according to claim 3 ,
wherein the wall surface abuts against the sealing unit in a state where the valve body is closed when the sealing unit abuts against a sealing surface formed in the intake port.

7. The intake device of an internal combustion engine according to claim 4 ,
wherein the wall surface abuts against the sealing unit in a state where the valve body is closed when the sealing unit abuts against a sealing surface formed in the intake port.

8. The intake device of an internal combustion engine according to claim 7 ,
wherein the wall surface has a convex portion which protrudes toward the valve body, and the convex portion and the sealing unit abut against each other.

9. The intake device of an internal combustion engine according to claim 1 , wherein a void is formed between the wall surface of the holding member and the rolling bearing in the direction in which the rotation shaft extends.

10. The intake device of an internal combustion engine according to claim 9 , wherein the holding member includes a hollow portion at which the rolling bearing is mounted, and a communication hole is formed at the hollow portion relative to the rolling bearing to communicate between atmosphere and the void formed between the wall surface of the holding member and the rolling bearing in the direction in which the rotation shaft extends.

Assignees

• Aisin Seiki

Inventors

• Ninomiya Kyohei
• OIWA Toshiyuki

Classifications

• F02M35/1036

  by welding, bonding or the like (welding plastic materials together in general B29C65/02) · CPC title

• F02B27/0273

  Flap valves · CPC title

• F02B27/0263

  the plenum chamber and at least one of the intake ducts having a common wall, and the intake ducts wrap partially around the plenum chamber, i.e. snail-type (F02B27/0257 takes precedence) · CPC title

• F01L7/16 Primary

  Sealing or packing arrangements specially therefor · CPC title

• F02M35/10072

  Intake runners · CPC title