Exhaust gas purification device for internal combustion engines

A technology of exhaust gas purification device and internal combustion engine, which is applied to exhaust devices, mufflers, mechanical equipment, etc., can solve the problems of maintaining parts wind erosion, particulate matter dust leakage, etc., and achieves excellent filter function and excellent exhaust gas purification performance.

Active Publication Date: 2019-06-28
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in this case, due to the positional relationship between the seal in the inclined portion or the stepped portion and the holding member, there is a possibility that particulate matter (PM) or dust (Ash) of non-combustible components contained in the exhaust gas may be released from the honeycomb carrier. The downstream side of the leakage
And, when the end portion of the holding member on the central axis direction of the honeycomb carrier protrudes from the end face on the central axis direction of the honeycomb carrier, the exhaust gas directly contacts the end portion of the holding member, and wind erosion of the holding member may occur.

Method used

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  • Exhaust gas purification device for internal combustion engines
  • Exhaust gas purification device for internal combustion engines
  • Exhaust gas purification device for internal combustion engines

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0039] figure 1 It is a perspective view of the exhaust gas purification device of an internal combustion engine according to the first embodiment of the present invention. The exhaust gas purification device 1 of an internal combustion engine of the present embodiment is installed in an exhaust pipe of a gasoline engine (hereinafter referred to as "engine"), which is an internal combustion engine, not shown, and is opposed to the exhaust gas flowing through the exhaust pipe. A gasoline particulate filter (hereinafter, referred to as "GPF") that captures particulate matter (hereinafter referred to as "PM") or dust (Ash) of incombustible components.

[0040] The exhaust gas purifying device 1 is installed in an exhaust pipe extending downward along a side surface of the engine on the vehicle front side directly below an engine not shown. That is, the exhaust gas purification device 1 is installed in the exhaust pipe in a state where the flow direction of the exhaust gas faces down...

no. 2 Embodiment approach

[0082] Figure 4 It is an axial cross-sectional view of the exhaust gas purification device 2 of the second embodiment of the present invention. and, Figure 5 Yes Figure 4 An enlarged view of the outer peripheral part on the downstream side in the middle.

[0083] As that Figure 4 with Figure 5 As shown, compared with the first embodiment, the exhaust gas purification device 2 of the second embodiment adopts the same structure as the first embodiment except that the structure of the outer peripheral portion P is opposite to the upstream side and the downstream side. That is, in the present embodiment, the holding member 23 is arranged such that the position of the downstream end 232 of the holding member 23 in the central axis X direction overlaps with the position of the sealing area SR in the downstream inclined portion 212b in the central axis X direction. .

[0084] The exhaust gas purification device 2 of this embodiment is manufactured by the same manufacturing method as...

no. 3 Embodiment approach

[0089] Image 6 It is an enlarged view of the upstream side outer peripheral part in the axial cross-sectional view of the exhaust gas purification device 3 of the third embodiment of the present invention. Figure 7 This is a view of the honeycomb carrier 31 of the exhaust gas purification device 3 of the third embodiment viewed from the upstream side. Figure 8 It is a perspective view of the upstream outer peripheral part of the honeycomb carrier 31 of the exhaust gas purification device 3 of the third embodiment.

[0090] Compared with the first embodiment, the exhaust gas purification device 3 of the third embodiment adopts the same structure as the first embodiment except that the structure on the upstream side of the outer peripheral portion P and the structure on the upstream side of the housing member 32 are different.

[0091] Such as Figure 6 to Figure 8 As shown, the honeycomb carrier 31 of the present embodiment is formed with a linear portion 313 extending in the dire...

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PUM

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Abstract

The present invention provides an exhaust gas purification device for an internal combustion engine, which can ensure sufficient filter effective capacity and exhaust gas purification ability, and can reliably retain a honeycomb carrier in a housing member, and can reliably capture particulate matter or dust, and can suppress Keep components from weathering. The honeycomb carrier (11) includes an outer peripheral portion (P) having an inclined portion (112a, 112b), the inclined portion is formed on the outer peripheral side of both ends of the central axis (X) direction, and is formed to be closer to the outer peripheral edge side of the honeycomb carrier. The cross-sectional area perpendicular to the central axis is larger, and the outer peripheral part is held on the inner wall of the housing part (12) by means of the holding part (13), the inclined part has a sealing area (SR) and is arranged on the outer circumference of the sealing area and is not In the opening area (OR) to be sealed, the holding member (13) is configured to have at least one of its upstream end (131) and downstream end (132) in the central axis direction and the sealing area in the inclined portion on the central axis. The positions in the directions overlap.

Description

Technical field [0001] The invention relates to an exhaust gas purification device of an internal combustion engine. Background technique [0002] Conventionally, there has been known an exhaust gas purification device of an internal combustion engine including a honeycomb carrier and a cylindrical housing member. The honeycomb carrier carries an exhaust gas purification catalyst and has a filter function, and the housing member accommodates the honeycomb via a holding member. Carrier. As the honeycomb carrier, a so-called wall-flow honeycomb carrier in which the inflow side openings and the outflow side openings of adjacent cell cells are alternately sealed is used. When the honeycomb carrier is housed in the housing member, it is important to reliably hold the honeycomb carrier in the housing member. [0003] As a technique for holding the honeycomb carrier in the housing member, a technique such as a mesh ring is generally used. However, when a mesh ring or the like is used, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/022
CPCF01N3/0222F01N3/2825F01N3/2853F01N13/1888F01N2330/06F01N2330/32
Inventor 畠山由章
Owner HONDA MOTOR CO LTD
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