US3464398A - Soundproofed internal combustion engine - Google Patents

Soundproofed internal combustion engine Download PDF

Info

Publication number
US3464398A
US3464398A US726422A US3464398DA US3464398A US 3464398 A US3464398 A US 3464398A US 726422 A US726422 A US 726422A US 3464398D A US3464398D A US 3464398DA US 3464398 A US3464398 A US 3464398A
Authority
US
United States
Prior art keywords
crankcase
internal combustion
combustion engine
oil pan
soundproofed
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
US726422A
Other languages
English (en)
Inventor
Andreas Scheiterlein
Gerhard Thien
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
Application granted granted Critical
Publication of US3464398A publication Critical patent/US3464398A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

  • SOUNDPROOFED INTERNAL COMBUSTION ENGINE Filed May 3, 1968 5 Sheets-Sheet WLM@ A United States Patent O 3,464,398 SOUNDPROOFED INTERNAL COMBUSTION ENGINE Andreas Scheiterlein, Othmar Skatsche, and Gerhard Thien, Graz, Austria, assignors to Hans List, Graz, Austria Filed May 3, 1968, Ser. No. 726,422 Claims priority, application Austria, June 2, 1967, A 5,170/67 Int. Cl. F02b 77/00; F02f 7/00 U.S. Cl.
  • the invention relates to an internal combustion engine soundproofed in the crankcase area.
  • Conventional soundproofing for the arrangement of soundproofing covers in such places of the crankcase as are known to be potential noise sources due to the effect of the igniting power and mass forces.
  • these conventional soundproong methods are inadequate if applied to powerful high-speed nternal combustion engines of recent design.
  • the oil sump defining the lower portion of the crankcase is so designed as to provide a soundabsorbing sheeting comprising sidewalls rising over and above the crankshaft center and attached to the cylinder block with the interposition of soundprooling shims, the bearing brackets suspended from the crankshaft bearing blocks being interconnected by means of a bridge extending alongside the engine.
  • crankcase proper to be designed without sidewalls cast integral with its front and rear ends, the bridge interconnecting the crankshaft bearing blocks absorbing the torsional and bending stresses formerly taken up to a considerable extent by the sidewalls of the crankcase.
  • the oil pan proper can be designed as a nonvibrating sheeting with the oil contained in the pan helping to attenuate such vibrations as may occasionally occur.
  • Another advantage of this embodiment of the invention resides in the effective heat transfer from the crankshaft area via the upwardly protruding sidewalls of the oil pan, in addition to .the fact that this kind of soundproofing according to the invention does not involve any increase in the weight of the engine.
  • the oil pan is open at its front end and carries a connecting flange attached to the flywheel flange with the interposition of a soft packing.
  • the upper rim of the oil pan can be designed as a connecting flange attached to a supporting flange protruding from the crankcase with the interposition of a soft packing.
  • the connecting bridge of the bearing brackets can be designed as a bend and twist-resistant oil sump. This design which is particularly convenient from the viewpoint of foundry practice affords the necessary stiffness for a crankcase lacking sidewalls.
  • FIG. 1 shows a cross-sectional view of an internal combustion engine according to the invention with the cylinder head removed.
  • FIG. 2 a partial longitudinal cross-sectional view of the internal combustion engine on line II-II of FIG. l,
  • FIG. 3 a cross-sectional view of another embodiment of the invention, also with the cylinder head removed.
  • the crankcase 1 of the internal combustion engine comprises an upper portion 2, defining the cylinder block with the cylinder liners 3 and the bearing blocks 4 for the crankshaft S.
  • the lower portion of the crankcase 1 comprises bearing brackets 7 cast integral with a connecting bridge 6 extending alongside the engine and is screwed to the upper portion 2 of the crankcase rfom below by means of clamping screws 8 located on both sides of the crankshaft bearings.
  • the bearing brackets 7 are centered on the upper portion 2 of the crankcase by means of a horizontal bearing surface 9 including the crankshaft axis and by vertical bearing surfaces 10 provided on both sides of the crankshaft bearings.
  • the connecting bridge 6 is designed as a bend and twist resistant sump with an arcuate bottom 11 and with sidewalls 12 with reinforced upper rims.
  • crankcase 1 of the internal combustion engine does not feature any sidewalls cast integral with its front and rear ends but owes the stiffness required for the absorption of torsional and bending forces to a bridge 6 interconnecting the bearing brackets 7.
  • the oil pan 18 of the internal combustion engine is provided with sidewalls 19 protruding upwardly over and above the crankshaft center.
  • the upper rim of the sidewalls 19 is designed as an outwardly angleshaped horizontal connecting flange 20 secured by means of bolts 23 with the interposition of soundproofing packings 21 to a supporting flange 22 laterally protruding from the upper portion 2 of the crankcase.
  • the sidewalls 19 of the oil pan 18 present spyholes 26 covered by attachable lids 24 and sealed by means of O-rings 25.
  • the oil pan 18 is open on the side facing the flywheel 17 and provided with an outwardly angle-shaped connecting flange 27 which is secured by means of bolts 29 with the interposition of a soundproofing packing 28 to the protruding rim of the stop plate 13 in the proximity of the flywheel flange 14.
  • the lower portion of the oil pan 18 defines an oil reservoir 30 with an outlet 31.
  • the internal combustion engine illustrated in the drawing features a number of additional noise-attenuating devices which are not, however, subject matters of the present invention.
  • the sandwiched plates 32 encompassing the flywheel flange 14 are screwed to the flywheel flange 14 with the interposition of soundprooiing shims 33.
  • the sandwiched plates 34 are secured to the front end of the cylinder block in a similar manner. Additional sandwiched plates 35 and 36 serve to screen the cylinder block off on both sides.
  • the internal combustion engine shown in FIG. 3 differs from the design illustrated in FIGS. 1 and 2 essentially by the reinforced construction of the crankcase in the area of the crankshaft bearings.
  • the bearing brackets 7' as well as the bearing blocks 4' of this type of engine are wider and interconnected by means of two pairs of bolts 8 and 8 respectively, the connecting bridge 6' with its sidewalls 12 and the bearing brackets 7 forming a continuous box-type frame profile of remarkable stiffness.
  • the remaining details of the internal combustion engine are identical with those of the type illustrated in FIGS. 1 and 2.
  • An internal combustion engine comprising a crankcase featuring a sound-absorbing sheeting, the said sheeting consisting of an oil pan adjoining the lower portion of the crankcase and comprising upright sidewalls protruding upwardly over and above the crankshaft center, the free rim of the said oil pan being secured to the crankcase, soundprooiing shims arranged between the said rim of the oil pan and its attachments to the said crankshaft, further comprising bearing blocks for the said crankshaft on the said crankcase, bearing brackets suspended from and attached to each of the said bearing blocks, a connecting bridge ext-ending alongside the engine and interconnecting the said bearing brackets.
  • An internal combustion engine comprising a flywheel iiange, a stop plate secured to the said flywheel flange, the said oil pan being open on the side facing the flywheel ange and secured to the said stop plate, a soft packing being inserted between the rim of the oil pan and the open front end of same and the said stop plate.
  • An internal combustion engine providing a connecting ange formed by the upper rim 'of the said oil pan, a supporting flange protruding laterally from the said crankcase, the said oil pan being secured with its connecting flange to the said supporting flange of the crankcase, a soft packing inserted between the said connecting ange and the supporting ange of the crankcase.

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 Details And Ventilation Of Internal Combustion Engines (AREA)
US726422A 1967-06-02 1968-05-03 Soundproofed internal combustion engine Expired - Lifetime US3464398A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT517067A AT290921B (de) 1967-06-02 1967-06-02 Brennkraftmaschine mit einem im Kurbelgehäuse angeordneten, durchbrochene Wände aufweisenden Traggerüst

Publications (1)

Publication Number Publication Date
US3464398A true US3464398A (en) 1969-09-02

Family

ID=3572729

Family Applications (1)

Application Number Title Priority Date Filing Date
US726422A Expired - Lifetime US3464398A (en) 1967-06-02 1968-05-03 Soundproofed internal combustion engine

Country Status (2)

Country Link
US (1) US3464398A (de)
AT (1) AT290921B (de)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521726A (en) * 1968-04-16 1970-07-28 List Hans Air-cooled internal combustion engine with sound-proofed sheathing
US3684053A (en) * 1970-09-02 1972-08-15 List Hans Internal combustion engine with sound-absorbing casing
US3695386A (en) * 1969-03-20 1972-10-03 List Hans Sound-proofing component
DE2159158A1 (de) * 1971-11-29 1973-06-14 Hatz Motoren Brennkraftmaschine mit schalldaempfung
US3863617A (en) * 1972-11-10 1975-02-04 List Hans Internal combustion engine with sound-proof v-belt pulley
US3924597A (en) * 1974-03-13 1975-12-09 Hatz Motoren Internal combustion engine having a sound-muffling casing
US3949726A (en) * 1974-04-03 1976-04-13 Hans List Internal combustion engine with encasing
US3991735A (en) * 1974-11-26 1976-11-16 International Harvester Company Internal combustion engine
US4071008A (en) * 1975-04-18 1978-01-31 Hans List Low-noise-level internal combustion engine
US4137888A (en) * 1976-11-24 1979-02-06 Allis-Chalmers Corporation Sound abatement device for internal combustion engine
US4153034A (en) * 1976-08-19 1979-05-08 Kawasaki Jukogyo Kabushiki Magneto casing
US4203409A (en) * 1977-11-23 1980-05-20 Hans List Low-noise-level internal combustion engine
US4219002A (en) * 1977-10-18 1980-08-26 Volkswagenwerk Aktiengesellschaft Sound insulated internal combustion engine
US4230087A (en) * 1977-11-17 1980-10-28 Nissan Motor Company, Limited Low-noise-level internal combustion engine
US4245595A (en) * 1977-09-13 1981-01-20 Nissan Motor Company, Limited Internal combustion engine for motor vehicles
US4267805A (en) * 1978-06-08 1981-05-19 Motorenfabrik Hatz Gmbh & Co. Kg Internal combustion engine
US4278055A (en) * 1977-02-24 1981-07-14 Hans List Low-noise-level internal combustion Vee-engines
US4280453A (en) * 1975-09-04 1981-07-28 Hans List Multicylinder internal combustion engine
US4287861A (en) * 1979-03-09 1981-09-08 Steyr-Daimler-Puch Aktiengesellschaft Reciprocating internal-combustion engine
US4343271A (en) * 1979-02-07 1982-08-10 Hans List Low-noise-level internal combustion engines
US4369744A (en) * 1979-08-02 1983-01-25 Nissan Motor Company, Limited Low-noise level reciprocating piston internal combustion engine
US4412516A (en) * 1979-12-25 1983-11-01 Nissan Motor Company, Ltd. Low-noise level internal combustion engine
US4417552A (en) * 1980-12-11 1983-11-29 Volkswagenwerk A.G. Sound-insulated internal-combustion engine
US4423707A (en) 1982-09-24 1984-01-03 Sihon Tanas M Engine with internal crankcase bridge having integral oil pump and drive housing
US4520770A (en) * 1981-10-07 1985-06-04 Nissan Motor Co., Ltd. Automotive internal combustion engine with bearing beam structure
EP0252178A1 (de) * 1986-07-10 1988-01-13 MAN Nutzfahrzeuge Aktiengesellschaft Kapsel für Antriebsmotor in Kraftfahrzeugen
US4922870A (en) * 1988-05-06 1990-05-08 Daimler-Benz Ag Arrangement for supporting a crankshaft
US20120037116A1 (en) * 2008-12-30 2012-02-16 Volvo Lastvagnar Ab Engine arrangement comprising a noise shield

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237847A (en) * 1979-03-21 1980-12-09 Cummins Engine Company, Inc. Composite engine block having high strength to weight ratio

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1602089A (en) * 1920-11-09 1926-10-05 Bethlmhem Steel Company Internal-combustion engine
US1759147A (en) * 1924-02-23 1930-05-20 Packard Motor Car Co Internal-combustion engine
US2340885A (en) * 1940-12-07 1944-02-08 Continental Aviat & Eng Corp Fabricated crankcase structure
US3046954A (en) * 1961-01-18 1962-07-31 Gen Motors Corp Crankcase and bearing structure for internal combustion engines
US3195530A (en) * 1962-05-31 1965-07-20 Outboard Marine Corp Outboard motor having sound absorbing construction within engine housing
US3412724A (en) * 1966-01-10 1968-11-26 List Hans Soundproofed internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1602089A (en) * 1920-11-09 1926-10-05 Bethlmhem Steel Company Internal-combustion engine
US1759147A (en) * 1924-02-23 1930-05-20 Packard Motor Car Co Internal-combustion engine
US2340885A (en) * 1940-12-07 1944-02-08 Continental Aviat & Eng Corp Fabricated crankcase structure
US3046954A (en) * 1961-01-18 1962-07-31 Gen Motors Corp Crankcase and bearing structure for internal combustion engines
US3195530A (en) * 1962-05-31 1965-07-20 Outboard Marine Corp Outboard motor having sound absorbing construction within engine housing
US3412724A (en) * 1966-01-10 1968-11-26 List Hans Soundproofed internal combustion engine

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521726A (en) * 1968-04-16 1970-07-28 List Hans Air-cooled internal combustion engine with sound-proofed sheathing
US3695386A (en) * 1969-03-20 1972-10-03 List Hans Sound-proofing component
US3684053A (en) * 1970-09-02 1972-08-15 List Hans Internal combustion engine with sound-absorbing casing
DE2159158A1 (de) * 1971-11-29 1973-06-14 Hatz Motoren Brennkraftmaschine mit schalldaempfung
US3863617A (en) * 1972-11-10 1975-02-04 List Hans Internal combustion engine with sound-proof v-belt pulley
US3924597A (en) * 1974-03-13 1975-12-09 Hatz Motoren Internal combustion engine having a sound-muffling casing
US3949726A (en) * 1974-04-03 1976-04-13 Hans List Internal combustion engine with encasing
US3991735A (en) * 1974-11-26 1976-11-16 International Harvester Company Internal combustion engine
US4071008A (en) * 1975-04-18 1978-01-31 Hans List Low-noise-level internal combustion engine
US4280453A (en) * 1975-09-04 1981-07-28 Hans List Multicylinder internal combustion engine
US4153034A (en) * 1976-08-19 1979-05-08 Kawasaki Jukogyo Kabushiki Magneto casing
US4137888A (en) * 1976-11-24 1979-02-06 Allis-Chalmers Corporation Sound abatement device for internal combustion engine
US4278055A (en) * 1977-02-24 1981-07-14 Hans List Low-noise-level internal combustion Vee-engines
US4245595A (en) * 1977-09-13 1981-01-20 Nissan Motor Company, Limited Internal combustion engine for motor vehicles
US4219002A (en) * 1977-10-18 1980-08-26 Volkswagenwerk Aktiengesellschaft Sound insulated internal combustion engine
US4230087A (en) * 1977-11-17 1980-10-28 Nissan Motor Company, Limited Low-noise-level internal combustion engine
US4203409A (en) * 1977-11-23 1980-05-20 Hans List Low-noise-level internal combustion engine
US4267805A (en) * 1978-06-08 1981-05-19 Motorenfabrik Hatz Gmbh & Co. Kg Internal combustion engine
US4343271A (en) * 1979-02-07 1982-08-10 Hans List Low-noise-level internal combustion engines
US4287861A (en) * 1979-03-09 1981-09-08 Steyr-Daimler-Puch Aktiengesellschaft Reciprocating internal-combustion engine
US4369744A (en) * 1979-08-02 1983-01-25 Nissan Motor Company, Limited Low-noise level reciprocating piston internal combustion engine
US4412516A (en) * 1979-12-25 1983-11-01 Nissan Motor Company, Ltd. Low-noise level internal combustion engine
US4417552A (en) * 1980-12-11 1983-11-29 Volkswagenwerk A.G. Sound-insulated internal-combustion engine
US4520770A (en) * 1981-10-07 1985-06-04 Nissan Motor Co., Ltd. Automotive internal combustion engine with bearing beam structure
US4423707A (en) 1982-09-24 1984-01-03 Sihon Tanas M Engine with internal crankcase bridge having integral oil pump and drive housing
EP0252178A1 (de) * 1986-07-10 1988-01-13 MAN Nutzfahrzeuge Aktiengesellschaft Kapsel für Antriebsmotor in Kraftfahrzeugen
US4922870A (en) * 1988-05-06 1990-05-08 Daimler-Benz Ag Arrangement for supporting a crankshaft
US20120037116A1 (en) * 2008-12-30 2012-02-16 Volvo Lastvagnar Ab Engine arrangement comprising a noise shield
US8602155B2 (en) * 2008-12-30 2013-12-10 Volvo Lastvagnar Ab Engine arrangement comprising a noise shield

Also Published As

Publication number Publication date
DE1751124A1 (de) 1971-09-30
AT290921B (de) 1971-06-25
DE1751124B2 (de) 1972-10-05

Similar Documents

Publication Publication Date Title
US3684053A (en) Internal combustion engine with sound-absorbing casing
US3796280A (en) Internal combustion engine with sound-proofing casing
US3540425A (en) Internal combustion engine with soundproofing cowling
US3521726A (en) Air-cooled internal combustion engine with sound-proofed sheathing
US5611301A (en) Structural enclosure of combustion engines for the purpose of reducing engine noise
US4257369A (en) Internal combustion engine equipped with noise control device
GB1600147A (en) Ic engines
US3996913A (en) Engine with internal sound attenuation barrier
US4219002A (en) Sound insulated internal combustion engine
ATE81187T1 (de) Schallgedaemmte blech-oelwanne fuer brennkraftmaschinen.
Thien The use of specially designed covers and shields to reduce diesel engine noise
Jenkins et al. Design aspects of low-noise diesel engines
EP0062030B1 (de) Hubkolben-Brennkraftmaschine
US5676105A (en) Internal combustion engine with reinforced engine block
Thein et al. Design concepts of diesel engines with low noise emission
Brandl et al. Some strategies to meet future noise regulations for truck engines
Brandi et al. Design strategies for low noise engine concepts
Thien A review of basic design principles for low-noise diesel engines
US5651340A (en) Piston internal combustion engine with reinforced engine block using segmented ribs
GB2088027A (en) Cover for damping noise emission from an internal combustion engine or other machine
JPS6029657Y2 (ja) 自動車用低騒音エンジン
Waters et al. Paper 8: The Diesel Engine as a Source of Commercial Vehicle Noise
Jenkins et al. Diesel engine noise reduction hardware for vehicle noise control
JPS6160254B2 (de)
Kabele et al. Techniques for quieting the diesel