GB2004323A - Improvements in sound insulation of air-cooled internal combustion engines - Google Patents

Improvements in sound insulation of air-cooled internal combustion engines

Info

Publication number
GB2004323A
GB2004323A GB7836583A GB7836583A GB2004323A GB 2004323 A GB2004323 A GB 2004323A GB 7836583 A GB7836583 A GB 7836583A GB 7836583 A GB7836583 A GB 7836583A GB 2004323 A GB2004323 A GB 2004323A
Authority
GB
United Kingdom
Prior art keywords
air
internal combustion
sound insulation
combustion engines
cooled 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.)
Granted
Application number
GB7836583A
Other versions
GB2004323B (en
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.)
LOMBARDINI FAB IT MOTORI SpA
Original Assignee
LOMBARDINI FAB IT MOTORI SpA
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 LOMBARDINI FAB IT MOTORI SpA filed Critical LOMBARDINI FAB IT MOTORI SpA
Publication of GB2004323A publication Critical patent/GB2004323A/en
Application granted granted Critical
Publication of GB2004323B publication Critical patent/GB2004323B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust Silencers (AREA)

Abstract

The cylinder block and head of the engine are formed with cavities 5, 10 which are substantially filled with metallic sodium 6, 16. The cavities are arranged to surround the upper part of the or each cylinder 1 and the inlet and exhaust ports 13, 15. When the engine is running the sodium 6, 16 melts and, whilst it does not resist heat conduction to the cooling fins 4, 9, it attenuates the transmission of sound waves. <IMAGE>
GB7836583A 1977-09-13 1978-09-13 Air-cooled internal combustion engines Expired GB2004323B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT4689577A IT1095659B (en) 1977-09-13 1977-09-13 IMPROVEMENTS IN AIR-COOLED COMBUSTION ENGINES TO REDUCE NOISE

Publications (2)

Publication Number Publication Date
GB2004323A true GB2004323A (en) 1979-03-28
GB2004323B GB2004323B (en) 1982-03-24

Family

ID=11260332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836583A Expired GB2004323B (en) 1977-09-13 1978-09-13 Air-cooled internal combustion engines

Country Status (5)

Country Link
DE (1) DE2839622A1 (en)
ES (1) ES472584A1 (en)
FR (1) FR2402770A1 (en)
GB (1) GB2004323B (en)
IT (1) IT1095659B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2130959A1 (en) * 1996-09-10 1999-07-01 Nacional Motor S A Improvements to the cooling of internal-combustion engines
WO2004099583A1 (en) * 2003-05-06 2004-11-18 Scania Cv Ab (Publ) Method and arrangement for cooling of a cylinder lining
FR2958330A1 (en) * 2010-04-06 2011-10-07 Peugeot Citroen Automobiles Sa Method for defining insulation device in cooling circuit of vehicle for attenuating sound frequencies, involves calculating outlet wave by insulation device, and defining conformation of insulation device by minimizing wave amplitude
FR2958329A1 (en) * 2010-04-06 2011-10-07 Peugeot Citroen Automobiles Sa Method for structural design of cooling circuit utilized for cooling internal combustion engine attenuating sound frequencies in vehicle, involves minimizing amplitude of sound wave at exit of cooling circuit by adjusting cooling circuit
CN105351058A (en) * 2015-12-14 2016-02-24 无锡亨宇减震器科技有限公司 Cooling and heat insulating system for exhaust pipe of motorcycle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326320C2 (en) * 1983-07-21 1990-10-04 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Piston internal combustion engine with a wet cylinder liner inserted into a cylinder crankcase
EP0289912B1 (en) * 1987-05-02 1991-12-18 Kubota Limited Partially liquid-cooling type forcedly air-cooling system for internal combustion engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE262847C (en) *
FR366402A (en) * 1906-05-19 1906-10-04 Karl Otto Philipp Device for cooling machine parts and the like
GB437069A (en) * 1934-10-31 1935-10-23 Roland Claude Cross Improvements in the cooling of internal combustion engines
GB709675A (en) * 1951-05-02 1954-06-02 Innocenti Soc Generale System for cooling the intermediate wall of double-piston internal combustion engines for motor vehicles
DE1210248B (en) * 1960-05-03 1966-02-03 Fiat Spa Machine housing made of light metal for liquid-cooled piston internal combustion engines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2130959A1 (en) * 1996-09-10 1999-07-01 Nacional Motor S A Improvements to the cooling of internal-combustion engines
WO2004099583A1 (en) * 2003-05-06 2004-11-18 Scania Cv Ab (Publ) Method and arrangement for cooling of a cylinder lining
FR2958330A1 (en) * 2010-04-06 2011-10-07 Peugeot Citroen Automobiles Sa Method for defining insulation device in cooling circuit of vehicle for attenuating sound frequencies, involves calculating outlet wave by insulation device, and defining conformation of insulation device by minimizing wave amplitude
FR2958329A1 (en) * 2010-04-06 2011-10-07 Peugeot Citroen Automobiles Sa Method for structural design of cooling circuit utilized for cooling internal combustion engine attenuating sound frequencies in vehicle, involves minimizing amplitude of sound wave at exit of cooling circuit by adjusting cooling circuit
CN105351058A (en) * 2015-12-14 2016-02-24 无锡亨宇减震器科技有限公司 Cooling and heat insulating system for exhaust pipe of motorcycle

Also Published As

Publication number Publication date
GB2004323B (en) 1982-03-24
DE2839622A1 (en) 1979-03-22
FR2402770A1 (en) 1979-04-06
ES472584A1 (en) 1979-02-16
FR2402770B1 (en) 1985-01-25
IT1095659B (en) 1985-08-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee