EP0457750A1 - Moteur à combustion interne à refroidissement liquide - Google Patents

Moteur à combustion interne à refroidissement liquide Download PDF

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Publication number
EP0457750A1
EP0457750A1 EP91890092A EP91890092A EP0457750A1 EP 0457750 A1 EP0457750 A1 EP 0457750A1 EP 91890092 A EP91890092 A EP 91890092A EP 91890092 A EP91890092 A EP 91890092A EP 0457750 A1 EP0457750 A1 EP 0457750A1
Authority
EP
European Patent Office
Prior art keywords
cap
internal combustion
combustion engine
oil pump
cover
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
EP91890092A
Other languages
German (de)
English (en)
Other versions
EP0457750B1 (fr
Inventor
Franz Dipl.Ing.Dr. Laimböck
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0457750A1 publication Critical patent/EP0457750A1/fr
Application granted granted Critical
Publication of EP0457750B1 publication Critical patent/EP0457750B1/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
    • 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
    • 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
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Definitions

  • the invention relates to a liquid-cooled internal combustion engine with a piston-controlled outlet, in particular a two-stroke internal combustion engine, which is equipped with an alternator or an alternator and a lubricating oil pump and in which the cylinder head has a cap which is sealed off from it and forms the coolant space and extends approximately over the cylinder extends to the outlet and has a crank-side cap sealing surface.
  • the invention is based on the object of eliminating these deficiencies and reducing the vibration excitation by the frequency spectrum of the internal combustion engine to a minimum or preventing the transmission of structure-borne noise.
  • the invention solves the problem in that the lubricating oil pump and the alternator are provided with lids which, like the cap, are fastened to their crank-side cap sealing surface with the interposition of soft seals and avoiding metallic contact with the crank or machine housing.
  • the cap and the two housing covers are acoustically decoupled from the crankcase or machine housing, so that structure-borne noise cannot be transmitted from the housing to the cap or cover, and no noise radiation is then to be feared from these capsule parts.
  • the cap and the cover for the oil pump are fastened with collar screws tightened to the stop, a washer between their screw head and the cap or the cover with vulcanized rubber layer. Since these are collar screws, they can only be tightened to a certain extent, which prevents the soft seals from being pressed together too strongly. Nevertheless, there is no metallic contact, because the washer with the vulcanized rubber layer is inserted between the screw head and the cap or the cover. When adjusting the rubber hardness, care must of course be taken to ensure that the sealing function remains guaranteed.
  • the lubricating oil pump has so far mostly been stored in the associated cover.
  • the cover due to its attachment via soft seals to the crankcase, albeit with small, relative movements, is according to the invention when the lubricating oil pump is driven by the crankshaft via gearwheels mounted on a bracket rigidly attached to arms of the crankcase, on which the cover, which has a closable maintenance opening, bears with a soft seal.
  • the exact distance to the crankshaft for the gear drive is fixed by mounting the lubricating oil pump on the carrier.
  • the structure-borne noise transmission to the cover remains interrupted, however, and access is guaranteed through the lockable maintenance opening.
  • a particularly favorable construction is achieved in that the cover for the alternator or pilot light runs out into a socket with which it is inserted without screws in the cylindrical housing part for the alternator or pilot generator with the interposition of O-rings.
  • the cylinder 1 of a two-stroke internal combustion engine has overflow channels 2 for the fuel-air mixture and an outlet channel 3, the slots of these channels being controlled by the piston 4.
  • the upper part of the cylinder 1 or the cylinder head 5 are water-cooled, the cylinder head 5 having a cap 6, which is sealed off from it and forms the coolant space and which extends approximately over the cylinder 1 extends to the outlet 3 and has a crank-side cap sealing surface 7.
  • a soft seal 9 is provided between the cap sealing surface 7 and the engine or crankcase 8.
  • collar screws 10 for fastening the cap 6 to the housing 8 are collar screws 10 (Fig.
  • a washer 12 is inserted with vulcanized rubber layer 13, so that any metallic Contact between the cap 6 and the housing 8 or the fastening screw 10 is avoided.
  • a thermostat is designated, which has no inventive significance.
  • a cover 16 is also provided for the lubricating oil pump 15, which rests on the crankcase 8 via a soft seal 9 and has a maintenance opening 18 which can be closed by a further cover 17.
  • the cover 16 is attached to the crankcase 8 in the manner shown in FIG. 2.
  • the oil pump 15 is not attached to the cover 16, but on a bracket 20 held by arms 19 of the crankcase 8, so that the required distance of the oil pump drive gear 21 from the crankshaft 22 remains constant.
  • the cover 23 for the alternator 24 terminates in a connection piece 25 with which the cover 23 in the cylindrical housing part 8a of the crankcase 8 for the alternator 24 with the interposition of O-rings 26 is inserted without screws.

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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Gasket Seals (AREA)
EP91890092A 1990-05-16 1991-04-29 Moteur à combustion interne à refroidissement liquide Expired - Lifetime EP0457750B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1086/90 1990-05-16
AT0108690A ATA108690A (de) 1990-05-16 1990-05-16 Flüssigkeitsgekühlte brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0457750A1 true EP0457750A1 (fr) 1991-11-21
EP0457750B1 EP0457750B1 (fr) 1993-12-15

Family

ID=3506285

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890092A Expired - Lifetime EP0457750B1 (fr) 1990-05-16 1991-04-29 Moteur à combustion interne à refroidissement liquide

Country Status (6)

Country Link
US (1) US5241934A (fr)
EP (1) EP0457750B1 (fr)
JP (1) JPH04228862A (fr)
AT (1) ATA108690A (fr)
DE (1) DE59100715D1 (fr)
ES (1) ES2048005T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6491014B1 (en) * 2000-08-30 2002-12-10 Keith Eickert Valve cover assembly for internal combustion engine
JP3943972B2 (ja) * 2002-03-19 2007-07-11 本田技研工業株式会社 エンジンのケーシング
JP6055505B2 (ja) * 2015-03-31 2016-12-27 富士重工業株式会社 エンジン

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926157A (en) * 1973-10-12 1975-12-16 Bombardier Ltd Two-cycle engine with inlet porting by rotary valve
FR2351319A1 (fr) * 1976-05-12 1977-12-09 Deere & Co Dispositif assurant une isolation vis-a-vis des vibrations
FR2359326A2 (fr) * 1976-05-12 1978-02-17 Deere & Co Dispositif assurant une isolation vis-a-vis des vibrations
DE3637890A1 (de) * 1985-11-06 1987-05-14 Steyr Daimler Puch Ag Fluessigkeitsgekuehlte brennkraftmaschine mit kolbengesteuertem auslass, insbesondere zweitakt-brennkraftmaschine
US4719892A (en) * 1986-06-26 1988-01-19 General Motors Corporation Cavity closure with isolator seal and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT121814B (de) * 1928-11-06 1931-03-10 Climax Motorenwerke Und Schiff Mehrzylindrige Brennkraftmaschine.
AT387624B (de) * 1981-03-31 1989-02-27 Steyr Daimler Puch Ag Hubkolben-brennkraftmaschine
DE3519205A1 (de) * 1985-05-29 1986-12-04 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Befestigung einer abdeckhaube an einem zylinderkopf
US4667628A (en) * 1986-03-06 1987-05-26 General Motors Corporation Oil pan isolation mounting and seal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926157A (en) * 1973-10-12 1975-12-16 Bombardier Ltd Two-cycle engine with inlet porting by rotary valve
FR2351319A1 (fr) * 1976-05-12 1977-12-09 Deere & Co Dispositif assurant une isolation vis-a-vis des vibrations
FR2359326A2 (fr) * 1976-05-12 1978-02-17 Deere & Co Dispositif assurant une isolation vis-a-vis des vibrations
DE3637890A1 (de) * 1985-11-06 1987-05-14 Steyr Daimler Puch Ag Fluessigkeitsgekuehlte brennkraftmaschine mit kolbengesteuertem auslass, insbesondere zweitakt-brennkraftmaschine
US4719892A (en) * 1986-06-26 1988-01-19 General Motors Corporation Cavity closure with isolator seal and method

Also Published As

Publication number Publication date
JPH04228862A (ja) 1992-08-18
ES2048005T3 (es) 1994-03-01
DE59100715D1 (de) 1994-01-27
EP0457750B1 (fr) 1993-12-15
ATA108690A (de) 1994-12-15
US5241934A (en) 1993-09-07

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