US3726365A - Internal combustion engine - Google Patents

Internal combustion engine Download PDF

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Publication number
US3726365A
US3726365A US00112868A US3726365DA US3726365A US 3726365 A US3726365 A US 3726365A US 00112868 A US00112868 A US 00112868A US 3726365D A US3726365D A US 3726365DA US 3726365 A US3726365 A US 3726365A
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US
United States
Prior art keywords
panel
central portion
portions
metal
internal combustion
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
US00112868A
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English (en)
Inventor
M Russell
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3726365A publication Critical patent/US3726365A/en
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
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/0073—Adaptations for fitting the engine, e.g. front-plates or bell-housings

Definitions

  • a metallic panel for an i l mbustion engine the panel being of the kind not supporting a load.
  • the 12%] Cell ..188/1 B, 35 panel is divided into a peripheral portion and a central d B 198 portion the two portions being interconnected by at 1 le 0 188/] least one strip of metal and the spaces defined between the edgesof the portions being occupied by a 56 R ⁇ d filling which is formed from a flexible non-metallic 1 e erences material.
  • the two portions are substantially isolated UNITED STATES PATENTS from each other and the radiation of noise from the central portion is substantially reduced. 1,637,864 8/1927 Kolster ..188/1 B X 2,541,159 2/1951 Geiger ..'l88/l B X 3 Claims, 1 Drawing Figure PAIENTED 3,726,365
  • This invention relates to internal combustion engines and more particularly to an exterior metal panel of such an engine which is substantially load free.
  • Such panels can be set into vibration by the forces generated within the engine when it is in operation and this vibration can radiate objectionable noise.
  • the object of the invention is to provide for damping and isolation of the panel to reduce noise emission.
  • a panel of the kind specified is divided into a central portion and a peripheral portion, the latter being adapted to be secured to the engine, the two portions being connected by at least one strip of metal, the gap or gaps between the adjacent edges of said portions being filled by a flexible visco-elastic material which is bonded to said edges thereby to damp relative motion between said portions.
  • the cover is of cast construction and is formed from light alloy.
  • the cover includes a central portion and a flanged peripheral portion 11.
  • the peripheral portion is provided with apertures for the reception of retaining bolts whereby the cover can be secured to the engine.
  • the central portion 10 and the peripheral portion 11 are interconnected by three strips 12 of metal formed during the casting operation and these strips act to locate the two portions relative to each other and add strength to the cover. Furthermore, the strips 12 are of a considerable length so that they can flex to permit relative movement between the portions.
  • the gaps between the portions are filled with a filling 13 formed from a flexible visco-elastic material such as rubber which is bonded or otherwise secured to the adjacent edges of the portions. The rubber acts to damp the relative movement of the portions by viscous and hysteritic loss. The rubber is deformed in shear by the relative movement of the portions.
  • the resonant frequency of the center portion can be arranged to lie below the frequency at which it becomes an effective radiator of sound. It is essential to ensure that the central portion has an un-symmetrical form and furthermore, that it is generally devoid of thick ribs and thin sections (i.e. over twice and under half the average thickness'respectively) unless the ribs are specifically designed to increase the motion at the edges of the central portion compared with the motion elsewhere in the central portion.
  • a metal cover panel for an internal combustion engine the panel being substantially load free, the panel being divided into a central portion and a peripheral portion, the latter being adapted to be secured to the main body of the engine, at least one strip of metal interconnecting the two portions of the panel, a flexible visco-elastic filler material filling the gap or gaps between the adjacent edges of said portions, said filler material being bonded to said edges thereby to damp relative motion between said portions.
  • the central portion is of unsymmetrical form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Laminated Bodies (AREA)
  • Vibration Prevention Devices (AREA)
  • Gasket Seals (AREA)
US00112868A 1970-02-25 1971-02-05 Internal combustion engine Expired - Lifetime US3726365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898570 1970-02-25

Publications (1)

Publication Number Publication Date
US3726365A true US3726365A (en) 1973-04-10

Family

ID=9863136

Family Applications (1)

Application Number Title Priority Date Filing Date
US00112868A Expired - Lifetime US3726365A (en) 1970-02-25 1971-02-05 Internal combustion engine

Country Status (9)

Country Link
US (1) US3726365A (2)
JP (1) JPS515139B1 (2)
DE (1) DE2108662C3 (2)
ES (1) ES166153Y (2)
FR (1) FR2078826A5 (2)
GB (1) GB1326211A (2)
SE (1) SE357086B (2)
SU (1) SU476764A3 (2)
ZA (1) ZA71620B (2)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4257370A (en) * 1978-12-29 1981-03-24 Cummins Engine Company, Inc. Combined gear cover and mount for an internal combustion engine
US4719892A (en) * 1986-06-26 1988-01-19 General Motors Corporation Cavity closure with isolator seal and method
US4883031A (en) * 1987-08-25 1989-11-28 Dr. Ing. H.C.F. Porsche Ag Internal combustion engine
DE19701198A1 (de) * 1996-02-26 1997-08-28 Bruss Dichtungstechnik Deckel zum dichten Abschließen einer geräuscherzeugenden Vorrichtung
US20070175907A1 (en) * 2006-01-30 2007-08-02 Miele & Cie. Kg Casing for a household appliance with noise insulation
US20100071654A1 (en) * 2006-02-10 2010-03-25 Robert Waters Plastic cover having metal reinforcement for internal combustion engine applications and method of construction
GB2543333A (en) * 2015-10-15 2017-04-19 Gm Global Tech Operations Llc Acoustic cover

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1637864A (en) * 1926-05-25 1927-08-02 Fed Telegraph Co Electron-tube apparatus
US2541159A (en) * 1946-01-22 1951-02-13 Paul H Geiger Sound deadener for vibratory bodies
US2721028A (en) * 1954-04-05 1955-10-18 Gen Electric Arrangement for reducing case resonance
US2722194A (en) * 1954-02-16 1955-11-01 Hoffman Eugene Claude Attenuator to reduce ship's propeller vibrations
US2764136A (en) * 1954-01-27 1956-09-25 Gen Motors Corp Engine oil pan
US3078971A (en) * 1960-01-11 1963-02-26 Lord Mfg Co Damped beam
US3160549A (en) * 1960-12-29 1964-12-08 Minnesota Mining & Mfg Vibration damping structures
US3388772A (en) * 1966-06-16 1968-06-18 Continental Motors Corp Vibration absorber

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741214C (de) * 1940-08-11 1943-11-06 Maschf Augsburg Nuernberg Ag Schalldaemmende Doppelwand
US2355568A (en) * 1941-05-29 1944-08-08 Cons Aircraft Corp Vibration damped panel
US2674336A (en) * 1950-10-06 1954-04-06 C W Lemmerman Inc Acoustical panel
DE873659C (de) * 1951-06-08 1953-04-16 Henschel & Sohn G M B H Verkleidung von Motoren, die im Innern von Kraftfahrzeugen eingebaut sind
GB890249A (en) * 1959-11-16 1962-02-28 Lord Mfg Co Damped structure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1637864A (en) * 1926-05-25 1927-08-02 Fed Telegraph Co Electron-tube apparatus
US2541159A (en) * 1946-01-22 1951-02-13 Paul H Geiger Sound deadener for vibratory bodies
US2764136A (en) * 1954-01-27 1956-09-25 Gen Motors Corp Engine oil pan
US2722194A (en) * 1954-02-16 1955-11-01 Hoffman Eugene Claude Attenuator to reduce ship's propeller vibrations
US2721028A (en) * 1954-04-05 1955-10-18 Gen Electric Arrangement for reducing case resonance
US3078971A (en) * 1960-01-11 1963-02-26 Lord Mfg Co Damped beam
US3160549A (en) * 1960-12-29 1964-12-08 Minnesota Mining & Mfg Vibration damping structures
US3388772A (en) * 1966-06-16 1968-06-18 Continental Motors Corp Vibration absorber

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4257370A (en) * 1978-12-29 1981-03-24 Cummins Engine Company, Inc. Combined gear cover and mount for an internal combustion engine
US4719892A (en) * 1986-06-26 1988-01-19 General Motors Corporation Cavity closure with isolator seal and method
US4883031A (en) * 1987-08-25 1989-11-28 Dr. Ing. H.C.F. Porsche Ag Internal combustion engine
DE19701198A1 (de) * 1996-02-26 1997-08-28 Bruss Dichtungstechnik Deckel zum dichten Abschließen einer geräuscherzeugenden Vorrichtung
DE19701198C2 (de) * 1996-02-26 1998-06-10 Bruss Dichtungstechnik Deckel zum dichten Abschließen einer geräuscherzeugenden Vorrichtung
US20070175907A1 (en) * 2006-01-30 2007-08-02 Miele & Cie. Kg Casing for a household appliance with noise insulation
US20100071654A1 (en) * 2006-02-10 2010-03-25 Robert Waters Plastic cover having metal reinforcement for internal combustion engine applications and method of construction
US7814880B2 (en) * 2006-02-10 2010-10-19 Federal Mogul World Wide, Inc Plastic cover having metal reinforcement for internal combustion engine applications and method of construction
GB2543333A (en) * 2015-10-15 2017-04-19 Gm Global Tech Operations Llc Acoustic cover

Also Published As

Publication number Publication date
FR2078826A5 (2) 1971-11-05
SE357086B (2) 1973-06-12
DE2108662A1 (de) 1971-09-09
DE2108662C3 (de) 1981-08-06
DE2108662B2 (de) 1978-07-27
ES166153U (es) 1971-06-01
ZA71620B (en) 1971-10-27
JPS515139B1 (2) 1976-02-17
GB1326211A (en) 1973-08-08
SU476764A3 (ru) 1975-07-05
ES166153Y (es) 1971-10-16

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