# US 9,518,500 B2 · Arrangement for fitting an exhaust cleaning unit in an exhaust passage > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,500 B2 - Document ID: US9518500B2 - Status: Granted - Kind: B2 - Application number: 14/359,639 - Filed: 2012-11-13 - Published: 2014-10-09 - Granted: 2016-12-13 - Earliest claimed: 2011-11-22 - Assignees: Scania CV AB - Applicants: Ragnar Bucksch; Göran Granqvist - Inventors: Ragnar Bucksch; Göran Granqvist - Web page: https://patentgrep.com/patent/US9518500B2 ## CPC - F01N 13/08: Other arrangements or adaptations of exhaust conduits {(pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005)} - F01N 3/0211: {Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration} - F01N 3/0335: {with exhaust silencers in a single housing} - F01N 3/035: with catalytic reactors - F01N 3/2867: {the mats or gaskets being placed at the front or end face of catalyst body} - F01N 3/2875: {by using elastic means, e.g. spring leaves, for retaining catalyst body in the housing (F01N3/2853 - F01N3/2871 take precedence)} - F01N 3/2885: {with exhaust silencers in a single housing} - F01N 13/185: {the connection being realised by deforming housing, tube, baffle, plate, or parts thereof} - F01N 13/1855: {the connection being realised by using bolts, screws, rivets or the like} - F01N 2350/04: with means compensating thermal expansion - F01N 2450/30: Removable or rechangeable blocks or cartridges, e.g. for filters - Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract An arrangement for fitting an exhaust cleaning unit (2) in an exhaust passage (1b): An annular resilient component (7) is fitted around the exhaust cleaning unit (2) at a distance from a gasket (5). The annular resilient component (7) has a first contact portion (7a) which comes into contact with a wall surface (3) of the exhaust cleaning unit (2) and a second contact portion (7b) which comes into contact with a wall surface (1b) of the exhaust passage when the exhaust cleaning unit (2) is in a fitted state in the exhaust passage. The annular resilient component (7) keeps the exhaust cleaning unit (2) in a centered position in the exhaust passage with a spring force. ## Claims ### Claim 1 An arrangement for fitting an exhaust cleaning unit in an exhaust passage for exhaust from an engine, the exhaust passage passing through an aperture in a part of the engine, the arrangement comprising: a gasket fitted around the exhaust cleaning unit and configured, located and operable to serve as a seal between the exhaust cleaning unit and an internal wall surface of the exhaust passage; and an annular resilient component which is fitted around the exhaust cleaning unit at a distance from the gasket, the annular resilient component having a first contact portion configured, located, and operable to come into contact with a wall surface of the exhaust cleaning unit and a second annular contact portion configured, located and operable to come into contact with a wall surface of the exhaust passage when the exhaust cleaning unit is in a fitted state in the exhaust passage, and the annular resilient component is configured and operable for keeping the exhaust cleaning unit in a centered position in the exhaust passage with a spring force of the annular resilient component. ### Claim 2 (depends on 1) An arrangement according to claim 1, further comprising at least one grip on the exhaust cleaning unit for cooperation with a tool to push the exhaust cleaning unit into a fitting position in the exhaust passage and/or to pull the exhaust cleaning unit out from the fitting position in the exhaust passage. ### Claim 3 (depends on 1) An arrangement according to claim 1, wherein the exhaust cleaning unit is a particle filter unit. ### Claim 4 (depends on 1) An arrangement according to claim 1, further comprising a releasable fittable cover over the exhaust passage. ### Claim 5 (depends on 1) An arrangement according to claim 1, wherein the part of the engine comprises a silencer in the exhaust passage, the exhaust passage passing through an aperture in the silencer, and the exhaust cleaning unit is in the exhaust passage. ### Claim 6 (depends on 1) An arrangement according to claim 1, wherein the annular resilient component further comprises another first contact portion configured, located and operable to come into contact with the wall surface of the exhaust cleaning unit, and the second annular contact portion is located axially between the first contact portion and the another first contact portion. ### Claim 7 (depends on 1) An arrangement according to claim 1, further comprising a fastening device configured for releasably fastening the exhaust cleaning unit in an intended fitting position in the exhaust passage. ### Claim 8 (depends on 1) An arrangement according to claim 1, wherein the second annular contact portion is at an axial distance along the cleaning unit from the first contact portion. ### Claim 9 (depends on 8) An arrangement according to claim 8, wherein the annular resilient component has an external surface which is, from the first contact portion towards the second annular contact portion, at a progressively increasing radial distance from the exhaust cleaning unit. ### Claim 10 (depends on 9) An arrangement according to claim 9, wherein the annular resilient component includes slitlike recesses and intermediate limb portions which define the first contact portion.