EP0280122B1 - Dispositif d'aspiration pour un moteur à combustion interne - Google Patents

Dispositif d'aspiration pour un moteur à combustion interne Download PDF

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Publication number
EP0280122B1
EP0280122B1 EP88102019A EP88102019A EP0280122B1 EP 0280122 B1 EP0280122 B1 EP 0280122B1 EP 88102019 A EP88102019 A EP 88102019A EP 88102019 A EP88102019 A EP 88102019A EP 0280122 B1 EP0280122 B1 EP 0280122B1
Authority
EP
European Patent Office
Prior art keywords
suction
flanges
sealing element
suction installation
internal
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
EP88102019A
Other languages
German (de)
English (en)
Other versions
EP0280122A2 (fr
EP0280122A3 (en
Inventor
Roland Treffler
Anton Schäffer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0280122A2 publication Critical patent/EP0280122A2/fr
Publication of EP0280122A3 publication Critical patent/EP0280122A3/de
Application granted granted Critical
Publication of EP0280122B1 publication Critical patent/EP0280122B1/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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • 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
    • F02F11/00—Arrangements of sealings in combustion engines 
    • 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
    • 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

Definitions

  • the invention is based on the preamble of the main claim from DE-OS 25 26 550.
  • a separate opening of the suction system is assigned a cylindrical collar which serves to receive a pot-shaped cover.
  • the cover is held on the collar with a friction fit and additionally secured in a form-fitting manner.
  • the cover In order to prevent uncontrolled secondary air from being sucked in via the burst protection device, the cover must sit relatively strictly on the collar of the opening.
  • caking of the cover on the collar of the opening caused by deposits from operating materials of the internal combustion engine cannot be ruled out, considerable pressures can build up in this known burst protection device in the event of an uncontrolled deflagration of fuel-air mixture in the suction system until the cover is thrown off the collar. If the cover is stuck, these can damage the intake system, resulting in poor operating behavior of the internal combustion engine, increased consumption and an unfavorable exhaust gas composition. If the lid is blown off, it must then be put back on manually.
  • the invention has for its object to develop a suction system with a burst protection device such that damage from excess pressure from a deflagration in the suction system is reliably avoided.
  • the advantage is achieved that the closure part of the burst protection device is activated in accordance with the choice of material and the selected prestressing even at relatively low overpressures or initial overpressure curve values, and thus damage to the suction system is avoided. Furthermore, with the invention of a burst protection device which can be activated relatively easily, a suction system can advantageously be made of relatively thin walls from relatively light materials.
  • the invention further describes a construction principle of a burst protection device which is advantageous with regard to freedom from maintenance and simple construction. A lip-like sealing element, which acts like a pressure relief valve, is essential for this construction principle. After a response, such a device is automatically ready for operation again immediately.
  • the sealing element acting as a pressure relief valve additionally serves to seal connection points of the intake system with the internal combustion engine and / or in a built-in intake system between its parts.
  • connection points as burst protection devices is advantageously achieved by spaced-apart flanges of the suction system, the mutual distance being achieved according to a partial feature of claim 3 by means of clamping bushes projecting over a flange surface for the bolts of the connection.
  • the sealing element bridging the gap between the flanges is permanently held and fixed in a groove in one of the flanges.
  • the suction system is thin-walled in plastic.
  • a suction system 1 for a multi-cylinder internal combustion engine 2 comprises suction pipes 3, which are detachably connected to a common collector 4.
  • a throttle valve connector 5 is also releasably flanged to the collector 4.
  • Each intake manifold 3 has a flange 6 for detachable connection to the internal combustion engine 2.
  • the respective releasable connection of the suction pipes 3 to the collector 4 comprises flanges 7 and 8.
  • the flanges 7 and 8 are arranged at a mutual distance when screwing is effective. They thus form an opening 10 which is transverse to a line cross section 9 of the suction system or a suction pipe 3.
  • An elastic, lip-like sealing element 11 is arranged transversely to the gap-shaped opening 10 and is connected to a ring 12.
  • the ring 12 is held and fixed in a groove 13 arranged at a distance from the edge of the line cross section 9.
  • the lip-like sealing element 11 is designed and dimensioned such that, when the flanges 7 and 8 are screwed together effectively, they cooperate with the flat boundary 17 of the flange 8 in such a way that the sealing element 11 consists of a against the suction negative pressure sealing system by a bursting or excess pressure which arises in the event of a deflagration of a fuel-air mixture in the intake system 1, into a position 19 distant from the boundary 17 to form an outflow cross section 18.
  • the opening 10 and the sealing element 11 thus form a burst protection device 20.
  • burst protection devices 20 can also be arranged in the connection of the intake system 1 to the internal combustion engine 2 between the latter and the flanges 6 of the intake pipes 3 and in the flange connection of the collector 4 to the throttle valve connector 5.
  • the numerous burst protection devices 20, which additionally serve to seal the respective flange connection, enable the suction pipes 3 and the collector 4 of the suction system Form 1 thin-walled in plastic and thus to achieve a significantly reduced weight suction system 1.
  • the lip-like sealing element 11 on the ring 12 in its main extent relative to the mounting direction of the flanges 7,8 directed radially outward.
  • the sealing element 11 is of asymmetrical cross section with a longer flank 21 facing the line cross section 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Characterised By The Charging Evacuation (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Claims (6)

  1. Dispositif d'aspiration pour moteurs à combustion interne avec un dispositif anti-éclatement,
    - qui comprend un orifice particulier (10) du dispositif d'aspiration (1) avec une pièce de fermeture commandée par la pression, caractérisé
    - en ce que la pièce de fermeture est un élément d'étanchéité (11) à lèvre élastique,
    - qui est appliqué contre une délimitation (17) d'orifice (10) en précontrainte au moyen de déformation, pour créer un dispositif étanche contre la dépression d'aspiration, et
    - qui lors d'une pression d'explosion, libère et délimite une section d'écoulement par déformation opposée à la précontrainte entre lui et la délimitation de l'orifice.
  2. Dispositif d'aspiration selon la revendication 1,
    - notamment un dispositif d'aspiration constitué de plusieurs pièces vissées ensemble par des brides pour avoir une connexion démontable avec le moteur à combustion interne, caractérisé en ce que
    - l'élément d'étanchéité (11) correspond à un orifice (10), qui est formée par des brides (7, 8) placées à un écartement déterminé, et en ce que
    - l'une des brides (7) présente une gorge annulaire (13) disposée à une certaine distance du bord de la section respective (9) de tubulure,
    - qui sert de support de l'élément d'étanchéité (11) reposant avec précontrainte contre l'autre bride (8).
  3. Dispositif d'aspiration selon la revendication 2, caractérisé en ce que :
    - on obtient l'écartement mutuel des deux brides (7, 8) au moyen de douilles d'écartement des brides traversées par des boulons filetés.
    - chaque douille d'écartement pouvant être formée par un prolongement (14) d'une douille de contrainte (16) placée dans la bride (7) et traversée axialement par un boulon fileté.
  4. Dispositif d'aspiration selon les revendications 1-3, notamment pour des moteurs a combustion interne à plusieurs cylindres :
    - avec des tubulures d'aspiration (3) connectables par des brides (6) au moteur à combustion interne (2),
    - qui sont en communication avec un collecteur (4) par des brides (7, 8) en fixation démontable,
    - sur le collecteur, un boîtier de papillon (5) étant fixé par bride de manière démontable,
    caractérisé en ce que :
    - les tubulures d'aspiration (3) et le collecteur (4) du dispositif d'aspiration (1) sont en matière plastique à paroi mince,
    - des fixations par bride démontables entre les pièces en matière plastique et/ou les pièces en matière plastique et les pièces métalliques équipées d'éléments (11) d'étanchéité servant de dispositifs anti-éclatement (20).
  5. Dispositif d'aspiration selon les revendications 1-4, caractérisé en ce qu'on dispose l'élément d'étanchéité à lèvre (11) sur une bague (12) dirigée radialement vers l'extérieur dans son extension principale, relativement à l'axe de la bride (7, 8).
  6. Dispositif d'aspiration selon la revendication 5, caractérisé en ce que l'élément d'étanchéité (11) présente une section asymétrique avec un flanc (21) plus long dirigé vers l'une des faces d'aspiration d'air (section de tubulure (9).
EP88102019A 1987-02-24 1988-02-11 Dispositif d'aspiration pour un moteur à combustion interne Expired - Lifetime EP0280122B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873705765 DE3705765A1 (de) 1987-02-24 1987-02-24 Sauganlage fuer brennkraftmaschinen
DE3705765 1987-02-24

Publications (3)

Publication Number Publication Date
EP0280122A2 EP0280122A2 (fr) 1988-08-31
EP0280122A3 EP0280122A3 (en) 1989-12-06
EP0280122B1 true EP0280122B1 (fr) 1991-10-16

Family

ID=6321578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102019A Expired - Lifetime EP0280122B1 (fr) 1987-02-24 1988-02-11 Dispositif d'aspiration pour un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0280122B1 (fr)
DE (2) DE3705765A1 (fr)
ES (1) ES2026955T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108104997A (zh) * 2017-11-30 2018-06-01 江西洪都航空工业集团有限责任公司 一种发动机进气道密封垫

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003282A1 (de) * 1990-02-03 1991-08-14 Bayerische Motoren Werke Ag Ansaugleitungsteil einer brennkraftmaschine mit zwei miteinander verbundenen saugrohren
DE4217191C2 (de) * 1992-05-23 1994-03-31 Freudenberg Carl Fa Ansaugrohr für eine Verbrennungskraftmaschine
DE19625768B4 (de) * 1996-06-27 2009-04-16 Pierburg Gmbh Dünnwandiges Saugrohr für eine Brennkraftmaschine
EP1195513A3 (fr) * 1998-06-24 2002-05-15 Siemens Canada Limited Système de carter de collecteur
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
US6298816B1 (en) * 1999-10-07 2001-10-09 Siemens Canada Limited Vacuum seal for air intake system resonator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE408212C (de) * 1923-08-03 1925-01-14 James Frenrick Bates Einrichtung zur Verhuetung von Flammenrueckschlaegen
DE473369C (de) * 1927-03-14 1929-03-14 Alexander Jezekil Liberman Sicherungsvorrichtung gegen Flammenrueckschlaege
DE2526550A1 (de) * 1975-06-13 1976-12-23 Porsche Ag Saugrohr fuer brennkraftmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108104997A (zh) * 2017-11-30 2018-06-01 江西洪都航空工业集团有限责任公司 一种发动机进气道密封垫

Also Published As

Publication number Publication date
DE3865453D1 (de) 1991-11-21
EP0280122A2 (fr) 1988-08-31
ES2026955T3 (es) 1992-05-16
EP0280122A3 (en) 1989-12-06
DE3705765A1 (de) 1988-09-01
DE3705765C2 (fr) 1989-06-15

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