EP0276648A1 - Collecteur d'échappement pour moteurs à combustion interne - Google Patents

Collecteur d'échappement pour moteurs à combustion interne Download PDF

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Publication number
EP0276648A1
EP0276648A1 EP88100004A EP88100004A EP0276648A1 EP 0276648 A1 EP0276648 A1 EP 0276648A1 EP 88100004 A EP88100004 A EP 88100004A EP 88100004 A EP88100004 A EP 88100004A EP 0276648 A1 EP0276648 A1 EP 0276648A1
Authority
EP
European Patent Office
Prior art keywords
manifold
insulation
casing
exhaust manifold
manifold according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88100004A
Other languages
German (de)
English (en)
Inventor
Klaus Leistritz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tezet Service AG
Original Assignee
Tezet Service AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tezet Service AG filed Critical Tezet Service AG
Publication of EP0276648A1 publication Critical patent/EP0276648A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled

Definitions

  • the present invention relates to an outlet.
  • Exhaust manifold for internal combustion engines which is provided with a flexible insulation that extends over at least part of the length of the manifold.
  • a problem in particular with catalytically cleaned internal combustion engines is that the exhaust gas inlet temperature in the catalytic converter should be as high as possible in order to achieve a high degree of efficiency or to have any effect at all.
  • the object of the present invention is to provide a permanent and effective insulation of the exhaust manifold, ie to keep the heat radiation into the engine compartment small and to keep the exhaust gas temperature high.
  • This sheathing preferably consists of a high-temperature-resistant woven or knitted fabric, for example of an asbestos-containing material.
  • the cavity or air gap formed by the loose sheathing between the insulation material and the exhaust manifold reinforces the insulation effect and prevents destructive material stress due to the different temperature expansions of the insulation and the actual exhaust manifold material.
  • stainless steel e.g. Cr steel
  • conventional casting material would be destroyed more quickly.
  • pipe clips are preferably attached to the ends of the insulation. This is a simple as well as cheap attachment and can be solved quickly if necessary.
  • Fig. 1 of the drawing shows an exhaust manifold according to the invention with a casing 1, the actual exhaust manifold tube 2 and the flanges 3 for fastening the exhaust manifold to an engine block.
  • FIG. 2 shows a section through an exhaust manifold pipe with the air gap 4 formed between the casing 1 and pipe 2. Furthermore, the fastening of the casing to the pipe by a pipe clamp 5 is shown.
  • the clips 5 are attached to the individual tubes at the flange 3 (FIG. 1) and to the collecting tube at the end of the casing (e.g. for the catalytic converter).
  • a complex elbow can also be encased, for example, by attaching strips of insulation material which are placed around the outlet manifold pipes and the seams e.g. mechanically closed (e.g. metal clips), so that an essentially tight covering is achieved.
  • strips of insulation material which are placed around the outlet manifold pipes and the seams e.g. mechanically closed (e.g. metal clips), so that an essentially tight covering is achieved.
  • prefabricated tubular or tubular insulation materials can also be used, which are pushed over the exhaust manifold tubes and suitably, e.g. as described above.
  • suitable spacing elements 6 can be arranged in the gap. These can be used as separate parts, e.g. in the form of an interposed wire helix with bends 6 ⁇ provided at intervals, or as integrating components of the casing (local elevations on the inside of the casing).
  • tubular insulation may in turn be surrounded by a metal sheath or cage, e.g. in the form of a corrugated or flexible tube.
EP88100004A 1987-01-12 1988-01-02 Collecteur d'échappement pour moteurs à combustion interne Withdrawn EP0276648A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7987 1987-01-12
CH79/87 1987-01-12

Publications (1)

Publication Number Publication Date
EP0276648A1 true EP0276648A1 (fr) 1988-08-03

Family

ID=4178786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100004A Withdrawn EP0276648A1 (fr) 1987-01-12 1988-01-02 Collecteur d'échappement pour moteurs à combustion interne

Country Status (1)

Country Link
EP (1) EP0276648A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012130A1 (fr) * 1995-09-28 1997-04-03 Elring Klinger Gmbh Collecteur d'echappement
DE19953995A1 (de) * 1999-11-10 2001-05-17 Volkswagen Ag Abgasanlage mit Wärmeabschirmung
DE102013100389A1 (de) * 2013-01-15 2014-07-17 Alfred Buck Dämpfungseinrichtung, Sicherungselement und Verfahren zu deren Herstellung
CN107989682A (zh) * 2017-11-27 2018-05-04 重庆宗隆动力有限公司 一种散热装置及发动机排气系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2114732A5 (fr) * 1970-11-20 1972-06-30 Alfa Romeo Spa
US3908372A (en) * 1974-08-15 1975-09-30 Tenneco Inc Heat shield for exhaust conduits
US4109755A (en) * 1976-10-04 1978-08-29 Tenneco, Inc. Noise attenuator
WO1979000623A1 (fr) * 1978-02-15 1979-09-06 Caterpillar Tractor Co Collecteur d'echappement isolant
FR2549894A1 (fr) * 1983-07-29 1985-02-01 Witzenmann Metallschlauchfab Conduite d'echappement isolee pour vehicules automobile et procede et dispositif pour sa fabrication
DE3404771A1 (de) * 1984-02-10 1985-08-14 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Abgasleitung einer hubkolben-brennkraftmaschine
GB2174755A (en) * 1985-04-29 1986-11-12 Teledyne Ind Exhaust manifold for opposed cylinder ic engines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2114732A5 (fr) * 1970-11-20 1972-06-30 Alfa Romeo Spa
US3908372A (en) * 1974-08-15 1975-09-30 Tenneco Inc Heat shield for exhaust conduits
US4109755A (en) * 1976-10-04 1978-08-29 Tenneco, Inc. Noise attenuator
WO1979000623A1 (fr) * 1978-02-15 1979-09-06 Caterpillar Tractor Co Collecteur d'echappement isolant
FR2549894A1 (fr) * 1983-07-29 1985-02-01 Witzenmann Metallschlauchfab Conduite d'echappement isolee pour vehicules automobile et procede et dispositif pour sa fabrication
DE3404771A1 (de) * 1984-02-10 1985-08-14 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Abgasleitung einer hubkolben-brennkraftmaschine
GB2174755A (en) * 1985-04-29 1986-11-12 Teledyne Ind Exhaust manifold for opposed cylinder ic engines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012130A1 (fr) * 1995-09-28 1997-04-03 Elring Klinger Gmbh Collecteur d'echappement
DE19953995A1 (de) * 1999-11-10 2001-05-17 Volkswagen Ag Abgasanlage mit Wärmeabschirmung
DE102013100389A1 (de) * 2013-01-15 2014-07-17 Alfred Buck Dämpfungseinrichtung, Sicherungselement und Verfahren zu deren Herstellung
DE102013100389B4 (de) * 2013-01-15 2015-06-25 Alfred Buck Dämpfungseinrichtung, Sicherungselement und Verfahren zu deren Herstellung
CN107989682A (zh) * 2017-11-27 2018-05-04 重庆宗隆动力有限公司 一种散热装置及发动机排气系统

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