EP0571663A1 - Tuyau d'admission pour un moteur à combustion interne - Google Patents

Tuyau d'admission pour un moteur à combustion interne Download PDF

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Publication number
EP0571663A1
EP0571663A1 EP92121555A EP92121555A EP0571663A1 EP 0571663 A1 EP0571663 A1 EP 0571663A1 EP 92121555 A EP92121555 A EP 92121555A EP 92121555 A EP92121555 A EP 92121555A EP 0571663 A1 EP0571663 A1 EP 0571663A1
Authority
EP
European Patent Office
Prior art keywords
intake pipe
pin
pipe according
designed
ring sleeve
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.)
Granted
Application number
EP92121555A
Other languages
German (de)
English (en)
Other versions
EP0571663B1 (fr
Inventor
Michael Brümmer
Detlef Dr. Cordts
Klaus Döhring
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP0571663A1 publication Critical patent/EP0571663A1/fr
Application granted granted Critical
Publication of EP0571663B1 publication Critical patent/EP0571663B1/fr
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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10144—Connections of intake ducts to each other or to another device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10026—Plenum chambers
    • F02M35/10032—Plenum chambers specially shaped or arranged connecting duct between carburettor or air inlet duct and the plenum chamber; specially positioned carburettors or throttle bodies with respect to the plenum chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10236—Overpressure or vacuum relief means; Burst protection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10301—Flexible, resilient, pivotally or movable parts; Membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10373—Sensors for intake systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6851—With casing, support, protector or static constructional installations
    • Y10T137/6855—Vehicle

Definitions

  • the invention relates to an intake pipe for an internal combustion engine.
  • Intake pipes for internal combustion engines are generally known and mostly consist of a metallic material or plastic.
  • the wall thickness of the previously known intake pipes is often dimensioned such that combustion pressures, which can return to the intake pipe if the internal combustion engine is incorrectly set, can be absorbed without damage. It should be noted, however, that the wall thicknesses of such intake pipes have a considerable thickness, which is unsatisfactory both in terms of production technology and in terms of economy and function. Thin-walled plastic intake pipes often cannot withstand the overpressure that occurs and burst.
  • the invention has for its object to further develop an intake pipe of the known type such that it is cheaper to manufacture in terms of production technology and economy, has a lower weight and withstands combustion pressures that can strike back into the intake pipe.
  • the intake pipe comprises a safety valve which can be brought into the open position by a pressure in the interior which exceeds the atmospheric pressure. It is advantageous here that the wall thicknesses of the intake pipe can be dimensioned comparatively thin-walled, since excess pressure that can occur within the intake pipe is reduced via the safety valve.
  • Such an intake pipe has good performance characteristics over a long period of use, is simple and inexpensive to manufacture from a manufacturing point of view and has a low weight.
  • the safety valve can consist of a tubular ring sleeve made of rubber-elastic material, which covers at least one wall opening of a pin that is connected to the intake pipe in a flow-guiding manner. If there is any excess pressure within the intake pipe and thus within the pin, the tubular ring sleeve made of rubber-elastic material is also pressurized and lifts off the surface of the pin, so that there is a pressure equalization with the atmosphere. The ring sleeve is only loaded in the radial direction.
  • the ring sleeve can be attached to the pin, for example, by a clamp or by a frictional and / or positive connection of the ring sleeve to the pin.
  • the ring sleeve can, for example, be provided on the inner circumferential side on the side facing the suction pipe with an at least partially circumferential projection which is snapped into a circumferential groove of the pin which is open in the direction of the ring sleeve.
  • the safety valve can consist of a ring sleeve made of rubber-elastic material, which sealingly encloses a wall opening in the intake pipe in the area of its outer diameter and a pin in the area of its inner diameter.
  • the ring sleeve can be provided with reinforcement or stiffening ribs in the area of the wall opening of the intake pipe in order not to be deformed through the wall openings in the direction of the intake pipe in the case of the negative pressure which is usually present in the intake pipe.
  • the pin can be designed as a vacuum connection or as a sensor connection.
  • the ring sleeve is designed as a bellows, that the bellows and the pin each have an adapted surface profile and that the surface profiles can be sealingly engaged with one another when subjected to negative pressure. Due to the design of the pin according to the shape of the bellows, the two parts lie against each other in a gas-tight manner when subjected to negative pressure, so that predeterminable pressure conditions for engine control prevail in the intake pipe.
  • the bellows can be reinforced in the area of its axial ends by annular beads, in order to ensure a secure fixation at least in the area of the intake pipe even when subjected to excess pressure.
  • the outer diameter of the bellows remains largely tight in the area of the wall opening, while the otherwise tight connection between the pin and the bellows opens and ensures pressure equalization with the atmosphere. This reliably prevents the intake pipe from bursting.
  • the ring sleeve and the pin can be designed as a preassembled unit and can be fastened together on the suction pipe.
  • the unit can be fastened, for example, by a snap-in device which can be snapped into an opening in the intake pipe.
  • Different mounting options are also conceivable, such as gluing or rotary welding.
  • suction pipe according to the invention is explained in more detail below with reference to the drawings attached as an appendix. These show the individual components to be taken into account in a sectional and partially schematic representation.
  • FIG. 1 a section of an intake pipe is shown, in which the pin is designed as a vacuum connection and the ring sleeve, which is designed as a bellows, are designed as a preassembled unit and are subsequently connected to the intake pipe by rotary welding.
  • FIG. 2 also shows a section of an intake pipe, the ring sleeve being fixed on the intake pipe on the one hand and in the axial direction on the other hand on a vacuum connection which can be snapped into the wall opening of the intake pipe.
  • the suction pipe is made in one piece with a pin, which is designed as a vacuum connection, and has wall openings which are closed by the ring sleeve when subjected to vacuum.
  • the ring cuff is not designed like a bellows.
  • the safety valve is formed by a tubular ring sleeve, which covers a wall opening of the pin.
  • FIGS. 1 to 4 each show an exemplary embodiment of an intake pipe for an internal combustion engine which is provided with a safety valve, the safety valve 1 being able to be brought into the open position by a pressure in the interior 2 which exceeds the atmospheric pressure.
  • the safety valve 1 is formed by an annular sleeve made of rubber-elastic material, which is designed like a bellows and seals a wall opening 3, which can be used as a vacuum connection 8, when subjected to negative pressure.
  • the vacuum connection 8 can for example be connected to the crankcase ventilation of the internal combustion engine.
  • the bellows 9 is designed as a preassembled unit 10 with the vacuum port 8.
  • the outer diameter 5 of the bellows 9 is held captive in an undercut and in the area of it
  • the bellows 9 briefly lifts off the vacuum connection 8 until the overpressure is released from the intake pipe and a pressure equalization with the atmosphere is established.
  • the bellows 9 can at least in the area of the Wall opening 3 of the intake pipe 4 may be provided with reinforcement or stiffening ribs.
  • the preassembled unit 10 can be attached to the suction pipe by friction welding / rotary welding or snapping.
  • the vacuum connection 8 is thereby spatially fixed in the axial direction.
  • the ring sleeve in the form of a bellows 9 is connected on the one hand in the area of its outer diameter 5 to a receptacle formed in one piece with the intake pipe 4 and on the other hand in the area of its inner diameter 7 to the vacuum 8.
  • the advantageous mode of operation does not differ from the mode of operation of the embodiment according to FIG. 1.
  • the suction pipe 4 is integrally formed with a pin 6, wherein wall openings 3 are provided for the negative pressure.
  • the ring sleeve is essentially S-shaped and has a circumferential bead in the area of its axial boundaries.
  • the area of the ring sleeve, which can normally be subjected to negative pressure through the wall openings 3, can be provided with reinforcement, as a result of which consistently good performance characteristics are required over a long service life.
  • FIG. 4 shows an exemplary embodiment similar to the exemplary embodiment from FIG. 1, wherein the ring sleeve is tubular and consists of a rubber-elastic material.
  • the ring sleeve covers two wall openings 13 of the pin 6, which, like the pin 6, is made of the previous figures can be designed as a pipe or hose connection.
  • the ring sleeve can be held, for example, by a clamp.
  • the preassembled unit 10 can also be attached to the intake pipe, as described for FIG. 1.
  • the intake pipes according to Figures 1 to 4 consist of a suitable plastic such. B. polyamide, as well as the two-piece vacuum port 8 formed in FIGS. 1 and 2, and a different choice of material is quite possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Safety Valves (AREA)
  • Check Valves (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP92121555A 1992-05-23 1992-12-18 Tuyau d'admission pour un moteur à combustion interne Expired - Lifetime EP0571663B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4217191 1992-05-23
DE4217191A DE4217191C2 (de) 1992-05-23 1992-05-23 Ansaugrohr für eine Verbrennungskraftmaschine

Publications (2)

Publication Number Publication Date
EP0571663A1 true EP0571663A1 (fr) 1993-12-01
EP0571663B1 EP0571663B1 (fr) 1996-03-06

Family

ID=6459633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121555A Expired - Lifetime EP0571663B1 (fr) 1992-05-23 1992-12-18 Tuyau d'admission pour un moteur à combustion interne

Country Status (4)

Country Link
US (1) US5317995A (fr)
EP (1) EP0571663B1 (fr)
JP (1) JPH0674114A (fr)
DE (2) DE4217191C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5507256A (en) * 1995-06-14 1996-04-16 Ford Motor Company Intake manifold positive pressure relief disk
DE29513019U1 (de) * 1995-08-12 1995-10-19 Fa. Andreas Stihl, 71336 Waiblingen Verbrennungsmotor für ein handgeführtes Arbeitsgerät
US5771863A (en) * 1996-10-11 1998-06-30 Siemens Electric Limited Integrated intake manifold and fuel rail with enclosed fuel filter
DE19826261A1 (de) * 1998-06-15 1999-12-16 Mann & Hummel Filter Ansaugsystem
FR2793525B1 (fr) * 1999-05-12 2001-07-27 Mark Iv Systemes Moteurs Sa Ensemble d'admission pour vehicule a moteur thermique comportant un moyen limiteur de surpression
WO2007006410A1 (fr) * 2005-07-08 2007-01-18 Mündener Gummiwerk Gmbh Manchon d'un tuyau a air de suralimentation destine a fixer le tuyau a air de suralimentation sur une douille, et procede de fixation de ce manchon
DE102014002439B3 (de) * 2014-02-20 2015-07-02 Mtu Friedrichshafen Gmbh Isolierung für eine Komponente eines Verbrennungsmotors
CN105370459B (zh) * 2014-08-18 2018-05-25 陕西重型汽车有限公司 波纹管导向支撑件、组件及汽车进气系统
US10711818B2 (en) 2016-07-01 2020-07-14 Mann+Hummel Gmbh One-time only snap connection system mounting two parts and a sensor mounting system using the snap connection system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1267453A (en) * 1968-04-22 1972-03-22 Jarmuefejlesztesi Intezet Fuel-supply system for an internal combustion engine
AU4863172A (en) * 1971-11-09 1974-05-09 James N. Kirby Pty. Ltd Improvements in operation of air supply tubes to internal combustion engine carburettors
DE2342157A1 (de) * 1973-08-21 1975-02-27 Purolator Filter Gmbh Anordnung eines ansaugrohres fuer luftfilter, insbesondere fuer brennkraftmaschinen
EP0280122A2 (fr) * 1987-02-24 1988-08-31 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Dispositif d'aspiration pour un moteur à combustion interne
GB2239898A (en) * 1990-01-10 1991-07-17 Rover Group I.c. engine induction system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692337A (en) * 1970-09-04 1972-09-19 Avica Corp Flexible coupling
US4133347A (en) * 1977-10-31 1979-01-09 Albert Mercer Waste evacuation attachment for recreational vehicles
JPS57151034A (en) * 1981-03-13 1982-09-18 Nissan Motor Co Ltd Control device of air-fuel ratio for internal combustion engine with supercharger
EP0210836B1 (fr) * 1985-07-31 1989-06-14 R. J. Pond Limited Joints de jonction pour tuyau
DE3536522A1 (de) * 1985-10-12 1987-04-16 Audi Ag Saugrohr fuer eine brennkraftmaschine
US5150669A (en) * 1989-11-06 1992-09-29 General Motors Corporation Pressure relief means for integrated induction system
US5009199A (en) * 1990-06-08 1991-04-23 General Motors Corporation Intake reservoir for an engine having a check valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1267453A (en) * 1968-04-22 1972-03-22 Jarmuefejlesztesi Intezet Fuel-supply system for an internal combustion engine
AU4863172A (en) * 1971-11-09 1974-05-09 James N. Kirby Pty. Ltd Improvements in operation of air supply tubes to internal combustion engine carburettors
DE2342157A1 (de) * 1973-08-21 1975-02-27 Purolator Filter Gmbh Anordnung eines ansaugrohres fuer luftfilter, insbesondere fuer brennkraftmaschinen
EP0280122A2 (fr) * 1987-02-24 1988-08-31 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Dispositif d'aspiration pour un moteur à combustion interne
GB2239898A (en) * 1990-01-10 1991-07-17 Rover Group I.c. engine induction system

Also Published As

Publication number Publication date
EP0571663B1 (fr) 1996-03-06
DE59205608D1 (de) 1996-04-11
DE4217191C2 (de) 1994-03-31
DE4217191A1 (de) 1993-12-16
JPH0674114A (ja) 1994-03-15
US5317995A (en) 1994-06-07

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