EP0348451B1 - Heisse gase führende leitung für eine brennkraftmaschine - Google Patents

Heisse gase führende leitung für eine brennkraftmaschine Download PDF

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Publication number
EP0348451B1
EP0348451B1 EP88909511A EP88909511A EP0348451B1 EP 0348451 B1 EP0348451 B1 EP 0348451B1 EP 88909511 A EP88909511 A EP 88909511A EP 88909511 A EP88909511 A EP 88909511A EP 0348451 B1 EP0348451 B1 EP 0348451B1
Authority
EP
European Patent Office
Prior art keywords
line
screws
pipe
exhaust duct
hot
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
EP88909511A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0348451A1 (de
Inventor
Hans Sudmanns
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
Publication of EP0348451A1 publication Critical patent/EP0348451A1/de
Application granted granted Critical
Publication of EP0348451B1 publication Critical patent/EP0348451B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
    • F02F1/4271—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels with an exhaust liner
    • 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
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
    • F02F2001/4278—Exhaust collectors

Definitions

  • the invention relates to a hot gas line for an internal combustion engine according to the preamble of claim 1. Such an arrangement prevents the hot gas from coming into direct contact with the liquid-cooled envelope, thereby keeping the heat flow into the coolant small.
  • a generic arrangement of a hot gas-carrying line is known from DE-GM 80 13 256.
  • Several flange-like lugs are distributed over the length on each long side of the thin-walled line and lie against a corresponding flange surface of the liquid-cooled jacket.
  • the cable is fastened using screws inserted perpendicular to the flange surface.
  • the high temperatures of the hot gases that occur during operation lead to considerable differences in thermal expansion between the pipe and the jacket, which are only partially compensated for by the fastening.
  • Thermal expansion that cannot be compensated leads to pressure forces that result in incalculable material stresses.
  • the effects of the pressure forces overlap with the operational stresses of an internal combustion engine, such as vibration and gas pulsation, to the operational stresses of the pipeline.
  • the advantages achieved by the invention consist in particular in that the generation of the line deformation necessarily takes place with the assembly of the fastening means, that the fastening means can be checked from the outside, that the undersize which results in the deformation of the line can be clearly measured during assembly, that there is an inexpensive manufacture of the line fastening.
  • a line 11 which receives the hot exhaust gases of the exhaust gas turbine 12 (FIGS. 1 and 2).
  • the thin-walled line 11 is surrounded by a liquid-cooled jacket 13 to which the line 11 and the exhaust line 14 are attached.
  • the connection between line 11 and sheathing 13 takes place at the outlet end 15 of line 11 by means of four screws 16 arranged radially and in a cross-sectional plane.
  • the wall of line 11 is equipped in the cross-sectional plane in accordance with the circumferential distribution of screws 16 with lenticular knobs 17, each of which have the corresponding nut thread 16.
  • the line 11 In the initial state of assembly, when the line 11 is inserted into the casing 13, the line 11 has a radial undersize in the region of each lug 17. Due to the screws 16 engaging and tightening in the nut threads of the knobs 17, the line 11 is drawn against the sheathing, deforming its cross-sectional contour in the region of each knobs 17. The original radial undersize is then no longer available. For this purpose, the line 11 is deformed in the cross-sectional plane of the screws 16 in the wall sections between the lugs 17 to the contour shown in full lines in FIG. 2.
  • the radial undersize causing the deformation between the lugs 17 on the line 11 and the sheath 13 is selected so that a deformation occurs which is of the order of magnitude of the thermal expansion to be expected at the operating temperature of the line 11. This results in a decrease in the cold state generated at the operating temperature of the line 11 due to the thermal expansion Deformation.
  • the line 11 In the wall sections between the lugs 17, the line 11 then assumes the contour shown in dash-dot lines in FIG. 2. There is no impediment to thermal expansion. In the warmed-up state, the line 11 is thereby relieved of constraining forces which jeopardize the operation and which result from impeded thermal expansion.
  • the unevenly long wall sections between the lugs 17 have different natural frequencies, so that the vibrations of the line 11 excited by the pulsating exhaust gas flow increase this way can not rock up to a hazardous resonance vibration.
  • FIGS. 3 and 4 show a second exemplary embodiment of a line 11 carrying hot exhaust gases, which relates to the situation shown in FIGS. 1 and 2.
  • the line 11 is, however, smooth-walled in the fastening plane and has the undersize required for deformation in relation to the casing 13 in the assembled state.
  • a clamping ring 19 is loosely inserted in the interior of the conduit 11 and bears with its radially projecting lugs 17 on the inside of the conduit 11.
  • the attachment of line 11 and tension ring 19 to the casing 13 is again carried out with screws 16, which penetrate the line 11 through holes and are screwed into the lugs 17.
  • Line 11 and clamping ring 19 are deformed as already described after tightening the screws 16.
  • the advantage of this embodiment is that the line 11 can be formed without a weld seam or with fewer weld seams. Furthermore, different materials can be selected for line 11 and clamping ring 19.
  • FIGS. 5 and 6 show a third exemplary embodiment, which shows a line 11 carrying hot exhaust gases inside a liquid-cooled envelope 13 at the exhaust gas outlet Cylinder of an internal combustion engine shows.
  • the attachment between line 11 and sheathing 13 takes place by means of two screws 16 arranged radially in a cross-sectional plane.
  • the cross-sectional plane with screws 16 is arranged approximately in the middle of the longitudinal extent of line 11.
  • the wall of the line 11 is equipped with lugs 17.
  • a radial undersize is also present in the second exemplary embodiment in the cold state between the line 11 in the region of each lug 17 and the casing 13.
  • the lugs 17 form shoulders 20, 21 projecting radially over the outer circumference of the line 11 and two corresponding cutouts 18 in the sheath 13, by means of which the line 11 is fixed in the axial direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Connection Of Plates (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Clamps And Clips (AREA)
EP88909511A 1987-12-23 1988-11-09 Heisse gase führende leitung für eine brennkraftmaschine Expired - Lifetime EP0348451B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3743851A DE3743851C1 (de) 1987-12-23 1987-12-23 Abgasleitung fuer eine Brennkraftmaschine
DE3743851 1987-12-23

Publications (2)

Publication Number Publication Date
EP0348451A1 EP0348451A1 (de) 1990-01-03
EP0348451B1 true EP0348451B1 (de) 1992-01-22

Family

ID=6343463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88909511A Expired - Lifetime EP0348451B1 (de) 1987-12-23 1988-11-09 Heisse gase führende leitung für eine brennkraftmaschine

Country Status (8)

Country Link
US (1) US5022227A (enrdf_load_stackoverflow)
EP (1) EP0348451B1 (enrdf_load_stackoverflow)
JP (1) JPH02502470A (enrdf_load_stackoverflow)
KR (1) KR930011562B1 (enrdf_load_stackoverflow)
CN (1) CN1009124B (enrdf_load_stackoverflow)
DE (2) DE3743851C1 (enrdf_load_stackoverflow)
SU (1) SU1766274A3 (enrdf_load_stackoverflow)
WO (1) WO1989005911A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4021326C1 (enrdf_load_stackoverflow) * 1990-07-04 1991-09-05 Mtu Friedrichshafen Gmbh
DE4229467A1 (de) * 1992-09-03 1994-03-10 Mtu Friedrichshafen Gmbh Lagereinrichtung für die Abgassammelleitung einer Brennkraftmaschine
US5408828A (en) * 1993-12-10 1995-04-25 General Motors Corporation Integral cast diffuser for a catalytic converter
AT413130B (de) * 2003-09-23 2005-11-15 Ge Jenbacher Ag Brennkraftmaschine
RU2310085C2 (ru) * 2005-12-09 2007-11-10 Открытое акционерное общество "Заволжский моторный завод" Экран теплоизолирующий для двигателя внутреннего сгорания
CN102943716A (zh) * 2012-11-29 2013-02-27 河南创世电机科技有限公司 一种通用小型汽油机高功率用气缸盖
AT522795B1 (de) * 2019-10-07 2021-02-15 Avl List Gmbh Zylinderkopf einer brennkraftmaschine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926578C (de) * 1952-04-13 1955-04-21 Bayerische Motoren Werke Ag Vorrichtung zum Verhindern des Anlaufens von verchromten Auspuff-rohrkruemmern fuer Brennkraftmaschinen, insbesondere fuer Kraftraeder
US3908369A (en) * 1974-05-06 1975-09-30 Clark Equipment Co Turbo-supercharger exhaust
DE2602434A1 (de) * 1976-01-23 1977-07-28 Daimler Benz Ag Im zylinderkopf einer brennkraftmaschine befindliche gasfuehrungskanaele und deren herstellung
US4086763A (en) * 1976-04-13 1978-05-02 Fuji Jukogyo Kabushiki Kaisha Thermal reactor system for internal combustion engine
US4197704A (en) * 1976-06-11 1980-04-15 Honda Giken Kogyo Kabushiki Kaisha Exhaust manifold for internal combustion engine
DE2744964A1 (de) * 1977-10-06 1979-04-19 Kloeckner Humboldt Deutz Ag Abgasleitungssystem fuer mehrzylindrige hubkolbenbrennkraftmaschinen
DE8013256U1 (de) * 1980-05-16 1986-10-02 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Abgassammelleitung für Brennkraftmaschinen mit mehreren Zylindern
US4430856A (en) * 1981-11-13 1984-02-14 Deere & Company Port liner and method of assembly
DE3635478C1 (de) * 1986-10-18 1988-02-11 Mtu Friedrichshafen Gmbh Abgasleitung fuer eine aufgeladene,mehrzylindrige Brennkraftmaschine

Also Published As

Publication number Publication date
SU1766274A3 (ru) 1992-09-30
KR900700748A (ko) 1990-08-16
CN1009124B (zh) 1990-08-08
JPH02502470A (ja) 1990-08-09
KR930011562B1 (ko) 1993-12-11
CN1034606A (zh) 1989-08-09
JPH0411726B2 (enrdf_load_stackoverflow) 1992-03-02
US5022227A (en) 1991-06-11
DE3743851C1 (de) 1989-05-03
DE3868059D1 (de) 1992-03-05
EP0348451A1 (de) 1990-01-03
WO1989005911A1 (en) 1989-06-29

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