EP0282497B1 - Halterung einer abgasleitung - Google Patents

Halterung einer abgasleitung Download PDF

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Publication number
EP0282497B1
EP0282497B1 EP87904237A EP87904237A EP0282497B1 EP 0282497 B1 EP0282497 B1 EP 0282497B1 EP 87904237 A EP87904237 A EP 87904237A EP 87904237 A EP87904237 A EP 87904237A EP 0282497 B1 EP0282497 B1 EP 0282497B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
flange
cylinder head
exhaust duct
fastening
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.)
Expired - Lifetime
Application number
EP87904237A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0282497A1 (de
Inventor
Herbert Deutschmann
Gerd-Michael Wolters
Otto Reifenscheid
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.)
Rolls Royce Solutions GmbH
Original Assignee
MTU Friedrichshafen GmbH
MTU Motoren und Turbinen Union Friedrichshafen GmbH
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 MTU Friedrichshafen GmbH, MTU Motoren und Turbinen Union Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
Priority to AT87904237T priority Critical patent/ATE50827T1/de
Publication of EP0282497A1 publication Critical patent/EP0282497A1/de
Application granted granted Critical
Publication of EP0282497B1 publication Critical patent/EP0282497B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body

Definitions

  • the invention relates to a device for holding exhaust pipes according to the preamble of claim 1, as is known for example from DE-OS 31 50 001 ats.
  • Exhaust manifold and exhaust pipes of an internal combustion engine shown in DE-PS 26 53 263 are also arranged in an exhaust gas-tight space.
  • the exhaust manifold is made up of nested pipe sections, which should allow unimpeded length compensation.
  • a disadvantage is that the exhaust pipes, which transfer the fuel gases from the cylinder heads to the exhaust manifold, are welded to the pipe sections of the exhaust manifold.
  • the flue pipes are screwed to the flanges with two screws on the water-cooled housing of the gas-tight room. Since the flanges are thus cooled, they are readily able to absorb the deformations that result from the clamping by means of several fastening screws. In this case, however, a complicated water-cooled housing is required, which also includes the area of the cylinder head outlet openings.
  • the invention has for its object to hold the exhaust pipes so that no noteworthy forces occur in the clamping area in view of the optimal charging without annoying cooling of the exhaust pipes and the mounting area and especially at the highest temperatures, and still a secure and immovable fit the exhaust pipes is guaranteed.
  • FIGS. 2, 3 and 4 show possible configurations of the fastening area of a corresponding exhaust gas line 6.
  • the flange 8 used for fastening is designed in one piece with the exhaust gas line 6 according to FIGS. 2 and 3. 2, the flange and the fastening areas on the engine are designed such that the fastening screws 7 are approximately parallel to the axial extension direction of the exhaust gas line 6.
  • Fig. 3 shows an embodiment in which the fastening screws 7 are approximately transverse to the pipe axis.
  • the cylinder head and cylinder crankcase are shaped so that the flow deflection still takes place in the cylinder head. It is then possible to screw in the fastening screws 7 from above and from outside the gas-tight space 2. The tightness of the screws can thus advantageously be checked from the outside.
  • each exhaust pipe 6 is attached to only one circumferential point on the flange 8 by a fastening screw 7 on the cylinder head 9, no constraining forces can occur due to different temperature conditions on the exhaust pipes and cylinder head or cover hood, which stress the wall material in terms of strength. So that the radial deformation of the exhaust pipe is not hindered, a lateral radial clearance is provided all around in the fastening area.
  • the flange 8 of an exhaust pipe 6 is preferably designed as an annular circumferential collar which is guided radially between wall parts of the cylinder head and the cover or the radial end face of a shielding ring 10. This radial guidance prevents the clamping area from being stressed in terms of strength under dynamic stress due to bending vibrations of the exhaust pipes.
  • the annularly formed collar thus represents an axially supportable edge.
  • seals 11 lie behind a shielding ring 10.
  • the shielding ring protects the seals 11 from excessive heating.
  • the exhaust pipe 6 is articulated to a flange 8 which is formed by clamping rings.
  • the clamping rings are made in two parts and screwed together.
  • the exhaust pipe 6 is rotatably supported by spherical ring-shaped surfaces on the clamping rings and corresponding surfaces on a collar molded onto the exhaust pipe 6. Nevertheless, the radial expansion in the fastening region is not hindered, since the clamping rings holding the exhaust gas line 6 are fastened at only one single circumferential point — at a point — on the cover 3 to the exhaust gas-tight space 2.
  • radial clearance for expansion is provided on the circumference of the clamping rings.
  • the clamping rings are supported in a radial guide, which allows radial but not axial movements directed orthogonally to the support surface.
  • the other end of the exhaust pipe 6 can, however, not lie on the outer circumference without a gap on the edges of the openings of the exhaust manifold bent up to form an annular bead. This results in an almost tight transfer of the fuel gases from the cylinder head to the exhaust manifold. Because of the articulated mounting of the exhaust pipes in the clamping rings, displacements of the exhaust manifold due to the temperature load cause no or hardly any forces in the mounting.
  • the clamping rings according to FIG. 4 are fastened by means of a fastening screw 7 lying parallel to the direction of extension of the exhaust gas line. This has the advantage that the fastening screws are secured against loosening.
  • the exhaust pipes 6 are designed as castings. This has the advantage that the tubes can be produced in a cost-effective manner with a shape that is optimally adapted to the flow conditions. When the flange is cast on, strength-reducing weld seams or the like are avoided in particular.
  • the exemplary embodiments shown in the figures show an embodiment of the exhaust pipes and the fastening area, which represents a continuous, kink-free forwarding of the exhaust port of the cylinder head.
  • the fastening flange on the exhaust pipe in such a way that a narrowing with subsequent expansion of the pipe cross section is provided in the cylinder head following the flow diversion. Then it will a large flange area is formed, which is favorable for fastening.
  • a constriction following a flow diversion with subsequent expansion can also be advantageous for fluidic reasons.
  • the pressure of the flow medium is higher in the outer region than in the inner region. After a deflection, a sudden increase in pressure can lead to a flow separation, which is weakened by the narrowing with subsequent expansion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP87904237A 1986-09-13 1987-07-03 Halterung einer abgasleitung Expired - Lifetime EP0282497B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87904237T ATE50827T1 (de) 1986-09-13 1987-07-03 Halterung einer abgasleitung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3631312 1986-09-13
DE3631312A DE3631312C1 (de) 1986-09-13 1986-09-13 Einrichtung zur Halterung von Abgasleitungen

Publications (2)

Publication Number Publication Date
EP0282497A1 EP0282497A1 (de) 1988-09-21
EP0282497B1 true EP0282497B1 (de) 1990-03-07

Family

ID=6309598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87904237A Expired - Lifetime EP0282497B1 (de) 1986-09-13 1987-07-03 Halterung einer abgasleitung

Country Status (7)

Country Link
US (1) US4807436A (ja)
EP (1) EP0282497B1 (ja)
JP (1) JPS63502684A (ja)
DE (2) DE3631312C1 (ja)
ES (1) ES2005904A6 (ja)
SU (1) SU1701118A3 (ja)
WO (1) WO1988002060A1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823685C1 (ja) * 1988-07-13 1989-05-24 Mtu Friedrichshafen Gmbh
DE3900830C1 (ja) * 1989-01-13 1989-11-02 Mtu Friedrichshafen Gmbh
US8220264B2 (en) * 2005-09-13 2012-07-17 GM Global Technology Operations LLC Integrated inboard exhaust manifolds for V-type engines
DE102005056508A1 (de) * 2005-11-17 2007-05-24 Weber Technology Ag V-Motor mit mindestens einem Turbolader
US9903251B1 (en) 2011-11-29 2018-02-27 Brunswick Corporation Outboard motors and exhaust systems for outboard motors having an exhaust conduit supported inside the V-shape
US9174818B1 (en) 2011-11-29 2015-11-03 Brunswick Corporation Marine engines and exhaust systems for marine engines having a catalyst for treating exhaust
US10156171B2 (en) 2015-08-07 2018-12-18 Cummins Emission Solutions Inc. Mounting aftertreatment systems from service joints
FR3050231A1 (fr) * 2016-04-13 2017-10-20 Renault Sas Agencement optimise de collecteur d'echappement avec fixation en queue d'aronde
US9758228B1 (en) 2016-07-01 2017-09-12 Brunswick Corporation Exhaust manifolds for outboard marine engines
US10329978B1 (en) 2018-02-13 2019-06-25 Brunswick Corporation High temperature exhaust systems for marine propulsion devices

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE361003C (de) * 1922-10-09 Oliver Margetson Verfahren zur Befestigung von Auspuffrohren von Verbrennungskraftmaschinen in einem Gehaeuse
DE199122C (ja) *
GB673277A (en) * 1950-01-20 1952-06-04 Maschf Augsburg Nuernberg Ag Improvements in or relating to exhaust pipes for internal combustion engines
DE1164156B (de) * 1961-11-16 1964-02-27 Maschf Augsburg Nuernberg Ag Mehrteilige Auspuffleitung fuer Brennkraftmaschinen
FR2218777A5 (ja) * 1973-02-16 1974-09-13 Peugeot & Renault
US3958418A (en) * 1974-09-03 1976-05-25 General Motors Corporation Clamp arrangement
US4197704A (en) * 1976-06-11 1980-04-15 Honda Giken Kogyo Kabushiki Kaisha Exhaust manifold for internal combustion engine
DE2653263C3 (de) * 1976-11-24 1983-05-11 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Abgasleitung
US4117671A (en) * 1976-12-30 1978-10-03 The Boeing Company Noise suppressing exhaust mixer assembly for ducted-fan, turbojet engine
DE3150001C2 (de) * 1981-12-17 1986-08-14 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Kolbenbrennkraftmaschine mit Aufladung
DE3405955A1 (de) * 1984-02-18 1985-08-22 Klöckner-Humboldt-Deutz AG, 5000 Köln Abgassystem fuer eine mehrzylindrige brennkraftmaschine
JPS6114571U (ja) * 1985-05-24 1986-01-28 富士通株式会社 画情報読取装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan, Band 7, Nr. 25 (M-190)(1170) 2 Februar 1983 & JP-A-57181916 (Nissan Jidosha K.K.) 9 November 1982 *

Also Published As

Publication number Publication date
JPS63502684A (ja) 1988-10-06
ES2005904A6 (es) 1989-04-01
EP0282497A1 (de) 1988-09-21
DE3761837D1 (de) 1990-04-12
SU1701118A3 (ru) 1991-12-23
JPH0320573B2 (ja) 1991-03-19
WO1988002060A1 (en) 1988-03-24
DE3631312C1 (de) 1987-07-02
US4807436A (en) 1989-02-28

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