Exhaust purifying device for internal combustion engine

Patent metadata

Field	Value
Publication number	US-10385745-B2
Application number	US-201816166469-A
Country	US
Kind code	B2
Filing date	Oct 22, 2018
Priority date	Oct 23, 2017
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

An exhaust purifying device provided in an exhaust passage of an internal combustion engine comprises: a column-shaped honeycomb carrier; a cylindrical case member adapted to house the honeycomb carrier; a holding member provided between the honeycomb carrier and the case member to surround the outer circumference of the honeycomb carrier; buffer members provided on a peripheral edge of the edge surface of at least one side of an inflow side edge surface and an outflow side edge surface of the honeycomb carrier so as to regulate the movement of the honeycomb carrier in the central axis X direction; and setting members secured to the case member to regulate the movement of the buffer members by allowing their position regulation parts to contact the buffer members; wherein the buffer members are provided, on the outer circumferential sides, with recesses into which the position regulation parts of the setting members are fitted.

First claim

The invention claimed is:

1. An exhaust purifying device for an internal combustion engine provided in an exhaust passage of the internal combustion engine to purify exhaust of the internal combustion engine comprising:
a column-shaped honeycomb carrier comprising a plurality of cells extending from an exhaust inflow side end surface of the honeycomb carrier to an exhaust outflow side end surface of the honeycomb carrier and each being a flow passage of the exhaust, the plurality of cells being defined by porous partitions;
a cylindrical case member configured to house the honeycomb carrier;
a holding member provided between the honeycomb carrier and the case member to surround an outer circumference of the honeycomb carrier;
a buffer member provided on a peripheral edge of at least one of the inflow side end surface and the outflow side end surface of the honeycomb carrier so as to regulate movement of the honeycomb carrier along a central axis direction of the honeycomb carrier; and
a setting member secured to the case member and including a position regulation member configured to contact the buffer member to regulate movement of the buffer member;
wherein the buffer member includes a recess into which the position regulation member of the setting member is fitted.

2. The exhaust purifying device for an internal combustion engine according to claim 1 , wherein the position regulation member of the setting member includes a fitting section fitted into the recess, and at least one part of the fitting section reaches a position located radially inner than the outer circumferential surface of the honeycomb carrier.

3. The exhaust purifying device for an internal combustion engine according to claim 1 , wherein the position regulation member of the setting member, in a axial cross-sectional view of the honeycomb carrier, extends toward the central axis of the honeycomb carrier from an outer circumferential end thereof to a position located inner than the outer circumferential surface of the honeycomb carrier and being folded back toward the outer circumferential end thereof.

4. The exhaust purifying device for an internal combustion engine according to claim 1 , further comprising an edge ring member with a cylindrical section fitted onto the outer circumferential surface of at least one of the buffer member and the setting member, and the setting member, in an axial cross-sectional view of the honeycomb carrier, includes an extension extending in a direction away from the honeycomb carrier along an inner circumferential surface of the cylindrical section of the edge ring member.

5. The exhaust purifying device for an internal combustion engine according to claim 4 , wherein at least a part of a peripheral wall of the edge ring member is provided with a projection projecting toward the buffer member.

6. The exhaust purifying device for an internal combustion engine according to claim 4 , wherein the extension extends in the direction away from the honeycomb carrier along the central axis direction of the honeycomb carrier.

7. The exhaust purifying device for an internal combustion engine according to claim 1 , wherein the position regulation member of the setting member is provided with a projection.

8. The exhaust purifying device for an internal combustion engine according to claim 1 , wherein the buffer member has an annular shape in a view showing an end surface of the honeycomb carrier and at least one part of the annular buffer member is divided.

9. The exhaust purifying device for an internal combustion engine according to claim 8 , further comprising an edge ring member with a cylindrical section fitted onto the outer circumferential surface of the buffer member.

10. The exhaust purifying device for an internal combustion engine according to claim 1 , wherein the setting member is a part of the case member.

11. The exhaust purifying device for an internal combustion engine according to claim 1 , wherein the position regulation member of the setting member has an annular shape in a view showing an end surface of the honeycomb carrier and at least one part of the annular regulation member is divided.

12. The exhaust purifying device for an internal combustion engine according to claim 1 , wherein the honeycomb carrier is a gasoline particulate filter.

Assignees

• Honda Motor Co Ltd

Inventors

• Hatakeyama Yoshiaki
• Yokoyama Hiroki

Classifications

• F01N3/2853

  using mats or gaskets between catalyst body and housing · CPC title

• F01N3/2867

  the mats or gaskets being placed at the front or end face of catalyst body · CPC title

• F01N3/035

  with catalytic reactors · CPC title

• F01N3/021

  by means of filters · CPC title

• F01N3/2828 Primary

  Ceramic multi-channel monoliths, e.g. honeycombs · CPC title