Insert, holder and post-treatment unit for exhaust gases

An insert and containment technology, which is applied in the field of inserts of containment parts, can solve the problems that the post-processing unit cannot meet the conventional requirements of exhaust gas, the seal is not airtight enough, and leaks, etc.

Inactive Publication Date: 2013-08-28
SCANIA CV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This seal must be replaced with a new one each time it is taken out, as it will be plastically deformed and when the insert is reconnected to the container, the seal will not be tight enough for the aftertreatment unit to meet the discharge requirements. General requirements for exhaust gas
Existing emissions requirements do not allow even occasional small amounts of exhaust gas to leak through the insert in the aftertreatment unit

Method used

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  • Insert, holder and post-treatment unit for exhaust gases
  • Insert, holder and post-treatment unit for exhaust gases
  • Insert, holder and post-treatment unit for exhaust gases

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 An exhaust aftertreatment unit 10 is shown for a not shown internal combustion engine such as, for example, a diesel engine of a truck. The aftertreatment unit 10 comprises, in a known manner, a housing 12 with inlet and outlet openings, not shown in detail, for engine exhaust gas. Device 10 may have one or more interchangeable inserts, for example by figure 1 The inserts 50, represented in dashed lines, each include a treatment component including a substrate (such as an oxidation catalyst, SCR catalyst, or wall flow filter) configured to flow exhaust gas therethrough.

[0022] Such as figure 2 As shown, the insert 50 has a thin-walled bushing 52 or "sleeve" that is open at both ends and into which a base 70 is pushed and then passed through a pair of opposing locks. A ring 72 is axially secured, the locking ring itself being secured by annular shoulders 74 formed at opposite ends of the bushing 52 . The base 70 also has a radial support in the form of an...

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PUM

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Abstract

Insert (50) for a holder (22) in a post-treatment unit (10) for exhaust gases of a combustion engine, comprising a socket (52) for a treatment component (70) intended to have flowing through it the exhaust gases which are to be treated, connecting means (54) for holding the insert (50) in position in the holder (22), and sealing means (82) for gastight closure of the socket (52) relative to the holder (22). According to the invention said sealing means has a sealing ring (82) on the socket (52) for cooperation in self-centering seat engagement with an opposite sealing ring (84) in the holder.

Description

technical field [0001] The invention relates to an insert for a housing in an exhaust gas aftertreatment unit of an internal combustion engine, comprising a socket for a treatment component adapted to allow the exhaust gas to be treated to flow therethrough, Also included are connecting means for holding the insert in place in the receptacle; and sealing means for making the socket airtight relative to the receptacle. The invention also relates to a receptacle for such an insert and to an aftertreatment unit equipped with such an insert. Background technique [0002] To meet increasingly stringent emissions requirements, vehicle manufacturers have long employed exhaust aftertreatment. This treatment is carried out by means of various catalysts and filters which convert the exhaust gas chemically or physically so that only small amounts of harmful substances are able to escape from the exhaust pipe. In inserts of the type mentioned above, for example, the treatment componen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/18F01N3/021
CPCF01N3/0211F01N3/2867F01N3/2875F01N3/2878F01N2450/16Y02T10/12Y02A50/20F01N3/02F01N3/021F01N3/28F01N13/18F01N13/1827F01N2450/30B01D27/08B01D35/306F01N3/00
Inventor R·布克施G·格兰奎斯特
Owner SCANIA CV AB
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