EP0307388B1 - Schalldämmende Verschalung für Brennkraftmaschinen - Google Patents

Schalldämmende Verschalung für Brennkraftmaschinen Download PDF

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Publication number
EP0307388B1
EP0307388B1 EP88890222A EP88890222A EP0307388B1 EP 0307388 B1 EP0307388 B1 EP 0307388B1 EP 88890222 A EP88890222 A EP 88890222A EP 88890222 A EP88890222 A EP 88890222A EP 0307388 B1 EP0307388 B1 EP 0307388B1
Authority
EP
European Patent Office
Prior art keywords
passage
flange ring
ring
enclosure
protective shield
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
EP88890222A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0307388A3 (en
EP0307388A2 (de
Inventor
Assen Dipl.Ing.Dr. Valev
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.)
Steyr Daimler Puch AG
Original Assignee
Steyr Daimler Puch 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 Steyr Daimler Puch AG filed Critical Steyr Daimler Puch AG
Publication of EP0307388A2 publication Critical patent/EP0307388A2/de
Publication of EP0307388A3 publication Critical patent/EP0307388A3/de
Application granted granted Critical
Publication of EP0307388B1 publication Critical patent/EP0307388B1/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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation

Definitions

  • the invention relates to a sound-absorbing casing for internal combustion engines with a sealed passage, in particular for leading out the exhaust manifold, in which a passage seal is provided between the engine block and the casing relative to this relative movements, the passage seal being between an inner flange ring fastened to the engine and one has outer, attached to the casing flange ring sealing ring made of rubber-elastic material, and wherein the sealing ring is inextricably linked to cylindrical surfaces of the flange rings.
  • the casing In order to achieve really good engine noise insulation, the casing must encase the engine as completely as possible and must not have any unsealed passages.
  • the fastening of the casing relative to the engine block must provide a highly elastic support for structure-borne noise insulation, and such fastening and also the passage seals of the casing have to absorb and compensate for the sometimes considerable relative movements that occur in the operating state.
  • the known passage seals which consist of an elastomeric sealing ring vulcanized between two metal flange rings, can, provided that they are properly designed, seal the passages for engine parts that are not subject to a lot of heat, such as combustion air ducting, coolant and fuel lines and the like, with the necessary security, since these less warm parts do not endanger the temperature-sensitive sealing material.
  • the passage seal becomes particularly difficult if the passage opening is covered by a capsule which is required for sound insulation reasons and which attaches to the casing and accommodates the exhaust gas manifold.
  • a capsule which is required for sound insulation reasons and which attaches to the casing and accommodates the exhaust gas manifold.
  • an oil-tight seal between the casing and the capsule must also be provided here, so that oil or the like does not penetrate into the hot capsule.
  • a casing for internal combustion engines is known from AT-B 308475, which consists of soundproofing attached casing parts.
  • an annular elastic element is arranged between the engine block and the casing.
  • this is not able to absorb stronger vibrations, as they occur especially in the construction with wet formwork, if this is stiff and is only connected to the engine block in its lower region.
  • the elastic element of heating is fully applied through the exhaust pipe.
  • the invention is therefore based on the object to eliminate these deficiencies and to create a sound-absorbing formwork of the type described, which is characterized by a Relatively simple, yet resistant, oil-tight and sound-absorbing passage seal distinguishes which passage seal is particularly suitable for the connection of a dry exhaust gas capsule to a wet engine block casing.
  • the invention solves this problem in that the inner flange ring carries a protective shield shielding the sealing ring on the passage side while leaving a space between them, and the remaining space is filled with a heat-resistant and sound-absorbing insulating material.
  • This insulating material backfilled protective shield provides the elastic sealing ring with the necessary heat protection against the hot engine parts that are led out through the passage, whereby the insulating material, for example mineral wool such as Triton-Kaowool, also provides sound insulation.
  • the sealing ring made of a corresponding elastomer can therefore fully fulfill its function as an oil-tight and elastic support connection between the engine block and the casing without impairment and heat hazard.
  • the protective shield forms a connection face on the face against which the capsule abuts with a connection flange with the interposition of an insulating material layer.
  • the insulation material layer which can consist of the same material as the insulation material filling of the passage seal, extends the thermal protection provided by the protective shield to the outer flange ring and also insulates the connection of the capsule to the casing itself. If an outwardly projecting edge leg of the protective shield forms the connection surface, this leg also results in a liquid barrier or the like, which prevents oil from penetrating. prevented in the connected capsule.
  • Drain channels are provided between the outer flange ring and insulation material filling, which drain channels can easily be formed by a corrugation of the protective shield or flange ring. These drainage channels facilitate the separation of oil and prevent excessive contamination of the insulating material. For example, if unburned oil penetrates the passage area as a result of a defective exhaust seal, this oil cannot damage the seal, since it is drained out along the protective shield. The same applies in the case of a defective sealing ring, since the oil escaping from the interior of the casing can now escape to the outside along the outer flange ring or the protective shield. If such an oil leak is visible outside the seal, it is an early sign of seal damage and the need for repair.
  • the inner flange ring when the exhaust manifold is led out, the inner flange ring surrounds the exhaust manifold at a distance and is attached to the cylinder head of the engine using a circumferential seal, a heat protection strip preferably being located between the flange ring and the exhaust manifold.
  • a heat protection strip preferably being located between the flange ring and the exhaust manifold.
  • the engine block 1 of an internal combustion engine is encased by a sound-absorbing casing 2, which forms a passage 4 for leading the exhaust manifold 3 out.
  • the passage 4 is covered by a capsule 5, which connects to the casing 2 and is used for sound insulation of the exhaust gas manifold 3 subjected to structure-borne noise.
  • a passage seal 6 which consists of an inner flange ring 7 fastened to the cylinder head 1a, an outer flange ring 8 tightly fastened to the casing 2 using a preferably liquid sealant, and a sealing ring 9 vulcanized in between the inner and outer flange ring consists of an elastomer, a pressed with the inner flange ring 7, the sealing ring 9 to the exhaust manifold 3 shielding shield 10 and a heat-resistant and sound-absorbing insulation material filling 11 for the space 12 between the shield 11, sealing ring 9 and flange ring 8.
  • the inner sealing ring 7 sits bare on the cylinder head 1a, so that the cylinder head cooling is also effective for the flange ring 7, and a circumferential seal 13 made of an elastomer with a preferably round cross-section ensures the seal between the cylinder head 1a and the flange ring 7.
  • the protective shield 10 detects one externally projecting edge leg 10a, which forms an end-face connection surface 14 for the capsule 5, wherein the capsule 5 with a connecting flange 15 with the interposition of an insulating material layer 16 adjoins this connecting surface 14 in a sound-insulating manner.
  • the protective ring 10 and the insulating material filling 11 protect the sealing ring 9 from excessive heating and can also perform its sealing and supporting functions perfectly in the exhaust gas collector passage area.
  • the insulation material filling 11 and the insulation material layer 16 additionally ensure excellent sound insulation in the transition area between the casing 2 and the capsule 5, so that effective engine noise insulation is also ensured in the exhaust gas collector area.
  • the protective shield 10 also prevents oil or the like from entering the capsule 5 due to leaks in the exhaust seal or damage to the sealing ring 9, since this protective shield 10 replaces the oil in the lower region between the capsule 5 and the casing 2 derives outside.
  • drainage channels 17 are advantageously provided between the protective shield 10 and the insulating material filling 11 or the insulating material layer 16, which are simply created by a corrugation 18 of the protective shield, wherein such channels can also be prepared between the outer flange ring 8 and the insulating material filling 11.
  • An improvement in the heat protection for the passage seal 6 can be achieved if an annular gap is left between the inner flange ring 7 and the exhaust manifold line 3, into which a heat protection strip 19, for example made of asbestos, is inserted, whereby the heat transfer between the exhaust manifold 3 and the flange ring 7 is impaired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Gasket Seals (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP88890222A 1987-09-09 1988-09-01 Schalldämmende Verschalung für Brennkraftmaschinen Expired - Lifetime EP0307388B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2276/87 1987-09-09
AT0227687A AT389744B (de) 1987-09-09 1987-09-09 Schalldaemmende verschalung fuer brennkraftmaschinen

Publications (3)

Publication Number Publication Date
EP0307388A2 EP0307388A2 (de) 1989-03-15
EP0307388A3 EP0307388A3 (en) 1989-11-29
EP0307388B1 true EP0307388B1 (de) 1991-10-23

Family

ID=3531349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88890222A Expired - Lifetime EP0307388B1 (de) 1987-09-09 1988-09-01 Schalldämmende Verschalung für Brennkraftmaschinen

Country Status (8)

Country Link
US (1) US4836160A (ja)
EP (1) EP0307388B1 (ja)
JP (1) JPH0786328B2 (ja)
AT (1) AT389744B (ja)
CA (1) CA1297413C (ja)
DE (1) DE3865790D1 (ja)
SU (1) SU1602398A3 (ja)
YU (1) YU47292B (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0716018Y2 (ja) * 1988-05-19 1995-04-12 スズキ株式会社 排気マニホルドの遮熱板
JPH072975Y2 (ja) * 1988-05-24 1995-01-30 スズキ株式会社 エキゾーストマニホルドのカバー組付構造
DE3823685C1 (ja) * 1988-07-13 1989-05-24 Mtu Friedrichshafen Gmbh
DE4136304A1 (de) * 1991-11-04 1993-05-06 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln, De Gekapselte brennkraftmaschine mit einem durch eine kapselwand gefuehrten abgasrohr
DE10054310B4 (de) * 2000-11-02 2004-01-29 Wilo Gmbh Wärmedämmschale für hydraulische Einrichtung
DE10119892C2 (de) * 2001-04-24 2003-04-03 Skf Ab Deckel, insbesondere zur Dämpfung des Geräusches eines Verbrennungsmotors
US9105391B2 (en) 2006-08-28 2015-08-11 Avago Technologies General Ip (Singapore) Pte. Ltd. High voltage hold-off coil transducer
JP4941126B2 (ja) * 2007-06-27 2012-05-30 国産部品工業株式会社 遮音カバー
JP5468441B2 (ja) * 2010-03-31 2014-04-09 本田技研工業株式会社 内燃機関のクランクケース

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT308475B (de) * 1969-09-08 1973-07-10 List Hans Schalldämmende Verschalung für Brennkraftmaschinen
US4011849A (en) * 1976-02-05 1977-03-15 Deere & Company Combined engine and muffler compartment
JPS5611615Y2 (ja) * 1976-11-27 1981-03-17
US4164262A (en) * 1977-09-23 1979-08-14 Hans List Motor vehicle
AT350855B (de) * 1977-11-23 1979-06-25 List Hans Brennkraftmaschine
DE2855220A1 (de) * 1978-12-21 1980-07-10 Hatz Motoren Brennkraftmaschine mit geraeuschdaempfender verschalung
US4338890A (en) * 1979-01-31 1982-07-13 Caterpillar Tractor Co. Hood, muffler and air cleaner module for an internal combustion engine
AT387624B (de) * 1981-03-31 1989-02-27 Steyr Daimler Puch Ag Hubkolben-brennkraftmaschine
DE3305765C1 (de) * 1983-02-19 1984-06-28 Goetze Ag, 5093 Burscheid Verschlussdeckel
AT384278B (de) * 1983-03-03 1987-10-27 Steyr Daimler Puch Ag Hubkolben-brennkraftmaschine

Also Published As

Publication number Publication date
EP0307388A3 (en) 1989-11-29
ATA227687A (de) 1989-06-15
CA1297413C (en) 1992-03-17
JPH0786328B2 (ja) 1995-09-20
SU1602398A3 (ru) 1990-10-23
YU168488A (en) 1990-08-31
DE3865790D1 (de) 1991-11-28
YU47292B (sh) 1995-01-31
AT389744B (de) 1990-01-25
JPS6483823A (en) 1989-03-29
EP0307388A2 (de) 1989-03-15
US4836160A (en) 1989-06-06

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