FR2402770A1 - IMPROVEMENTS TO AIR-COOLED COMBUSTION ENGINES, IN ORDER TO REDUCE NOISE - Google Patents

IMPROVEMENTS TO AIR-COOLED COMBUSTION ENGINES, IN ORDER TO REDUCE NOISE

Info

Publication number
FR2402770A1
FR2402770A1 FR7826286A FR7826286A FR2402770A1 FR 2402770 A1 FR2402770 A1 FR 2402770A1 FR 7826286 A FR7826286 A FR 7826286A FR 7826286 A FR7826286 A FR 7826286A FR 2402770 A1 FR2402770 A1 FR 2402770A1
Authority
FR
France
Prior art keywords
air
combustion engines
order
reduce noise
cooled 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.)
Granted
Application number
FR7826286A
Other languages
French (fr)
Other versions
FR2402770B1 (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 FR2402770A1 publication Critical patent/FR2402770A1/en
Application granted granted Critical
Publication of FR2402770B1 publication Critical patent/FR2402770B1/fr
Granted 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

Abstract

L'invention concerne l'isolement acoustique des moteurs à combustion interne refroidis à l'air. Selon l'invention, on prévoit des espaces vides 5, 10, qui entourent les parois internes d'au moins la chambre de combustion, de la partie haute des cylindres 1 et des conduits d'aspiration et d'évacuation 13, 15, ces espaces vides étant étanches et remplis de sodium métallique 6, 16. L'invention s'applique notamment à l'industrie automobile.The invention relates to the sound insulation of air-cooled internal combustion engines. According to the invention, empty spaces 5, 10 are provided, which surround the internal walls of at least the combustion chamber, the upper part of the cylinders 1 and the suction and discharge ducts 13, 15, these empty spaces being sealed and filled with metallic sodium 6, 16. The invention applies in particular to the automotive industry.

FR7826286A 1977-09-13 1978-09-13 IMPROVEMENTS TO AIR-COOLED COMBUSTION ENGINES, IN ORDER TO REDUCE NOISE Granted FR2402770A1 (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
FR2402770A1 true FR2402770A1 (en) 1979-04-06
FR2402770B1 FR2402770B1 (en) 1985-01-25

Family

ID=11260332

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7826286A Granted FR2402770A1 (en) 1977-09-13 1978-09-13 IMPROVEMENTS TO AIR-COOLED COMBUSTION ENGINES, IN ORDER TO REDUCE NOISE

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)

Families Citing this family (7)

* 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
DE3866940D1 (en) * 1987-05-02 1992-01-30 Kubota Ltd INTERNAL COMBUSTION ENGINE WITH SIMULTANEOUS USE OF LIQUID COOLING AND FAN VENTILATION.
ES2130959B1 (en) * 1996-09-10 2000-02-16 Nacional Motor S A IMPROVEMENTS IN THE REFRIGERATION OF INTERNAL COMBUSTION ENGINES.
SE0301302L (en) * 2003-05-06 2004-11-02 Scania Cv Abp Method and device for cooling cylinder liners
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
FR2958330B1 (en) * 2010-04-06 2015-08-21 Peugeot Citroen Automobiles Sa METHOD FOR DEFINING A DEVICE FOR INSULATING A 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

Citations (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

Patent Citations (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

Also Published As

Publication number Publication date
IT1095659B (en) 1985-08-17
DE2839622A1 (en) 1979-03-22
FR2402770B1 (en) 1985-01-25
ES472584A1 (en) 1979-02-16
GB2004323A (en) 1979-03-28
GB2004323B (en) 1982-03-24

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Legal Events

Date Code Title Description
ST Notification of lapse