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FR2402767A1 - Tubular Y=shaped silencer for IC engine - has resonating chamber formed between diaphragms to absorb HF noise - Google Patents

Tubular Y=shaped silencer for IC engine - has resonating chamber formed between diaphragms to absorb HF noise

Info

Publication number
FR2402767A1
FR2402767A1 FR7727609A FR7727609A FR2402767A1 FR 2402767 A1 FR2402767 A1 FR 2402767A1 FR 7727609 A FR7727609 A FR 7727609A FR 7727609 A FR7727609 A FR 7727609A FR 2402767 A1 FR2402767 A1 FR 2402767A1
Authority
FR
France
Prior art keywords
diaphragms
engine
noise
absorb
tubular
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
FR7727609A
Other languages
French (fr)
Other versions
FR2402767B1 (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.)
Peugeot Cycles SA
Original Assignee
Peugeot Cycles SA
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 Peugeot Cycles SA filed Critical Peugeot Cycles SA
Priority to FR7727609A priority Critical patent/FR2402767A1/en
Priority to ES473016A priority patent/ES473016A1/en
Priority to IT7869037A priority patent/IT7869037A0/en
Publication of FR2402767A1 publication Critical patent/FR2402767A1/en
Application granted granted Critical
Publication of FR2402767B1 publication Critical patent/FR2402767B1/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
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/12—Tubes being corrugated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

The silencer for an internal combustion engine is formed from a Y shaped tubular member (14) which connects the exhaust manifold (2, 3, 4, 5) to the exhaust pipe (10). Each branch of the Y has a number of diaphragms (20) with a central hole (18). These diaphragms form a series of resonators which damp out very high frequency noise which is generated when the engine accelerates. The diaphragms are formed from discs with either plain or flanged edges welded to the inner surfaces of the pipe. An alternative design forms the resonating chambers by making deep circumferential corrugations.
FR7727609A 1977-09-13 1977-09-13 Tubular Y=shaped silencer for IC engine - has resonating chamber formed between diaphragms to absorb HF noise Granted FR2402767A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7727609A FR2402767A1 (en) 1977-09-13 1977-09-13 Tubular Y=shaped silencer for IC engine - has resonating chamber formed between diaphragms to absorb HF noise
ES473016A ES473016A1 (en) 1977-09-13 1978-09-01 Tubular Y=shaped silencer for IC engine - has resonating chamber formed between diaphragms to absorb HF noise
IT7869037A IT7869037A0 (en) 1977-09-13 1978-09-04 DEVICE APPLICABLE TO THE EXHAUST PIPE OF AN ICE ENGINE TO REDUCE THE NOISES EMITTED

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7727609A FR2402767A1 (en) 1977-09-13 1977-09-13 Tubular Y=shaped silencer for IC engine - has resonating chamber formed between diaphragms to absorb HF noise

Publications (2)

Publication Number Publication Date
FR2402767A1 true FR2402767A1 (en) 1979-04-06
FR2402767B1 FR2402767B1 (en) 1981-10-02

Family

ID=9195331

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727609A Granted FR2402767A1 (en) 1977-09-13 1977-09-13 Tubular Y=shaped silencer for IC engine - has resonating chamber formed between diaphragms to absorb HF noise

Country Status (3)

Country Link
ES (1) ES473016A1 (en)
FR (1) FR2402767A1 (en)
IT (1) IT7869037A0 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819428A (en) * 1986-02-27 1989-04-11 Alfa Romeo Auto S.P.A. Exhaust system for an internal combustion engine
EP0321343A1 (en) * 1987-12-17 1989-06-21 Automobiles Peugeot Dual pipe tubular exhaust element, especially for automotive vehicles and method of manufacturing this element
US5103931A (en) * 1987-07-20 1992-04-14 Sanshin Industries Co., Ltd. Exhaust silencing means for marine propulsion
EP1288456A3 (en) * 2001-09-04 2003-05-21 Faurecia Abgastechnik GmbH Exhaust apparatus for motor vehicles
CN104389665A (en) * 2014-09-16 2015-03-04 山东大学 Ridge structure perforated pipe noise elimination unit for reactive muffler

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819428A (en) * 1986-02-27 1989-04-11 Alfa Romeo Auto S.P.A. Exhaust system for an internal combustion engine
US5103931A (en) * 1987-07-20 1992-04-14 Sanshin Industries Co., Ltd. Exhaust silencing means for marine propulsion
EP0321343A1 (en) * 1987-12-17 1989-06-21 Automobiles Peugeot Dual pipe tubular exhaust element, especially for automotive vehicles and method of manufacturing this element
FR2624912A1 (en) * 1987-12-17 1989-06-23 Peugeot TWO-DUCT TUBULAR EXHAUST PART, PARTICULARLY FOR A MOTOR VEHICLE AND METHODS OF MANUFACTURING THE SAME
EP1288456A3 (en) * 2001-09-04 2003-05-21 Faurecia Abgastechnik GmbH Exhaust apparatus for motor vehicles
CN104389665A (en) * 2014-09-16 2015-03-04 山东大学 Ridge structure perforated pipe noise elimination unit for reactive muffler

Also Published As

Publication number Publication date
IT7869037A0 (en) 1978-09-04
ES473016A1 (en) 1979-03-16
FR2402767B1 (en) 1981-10-02

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Legal Events

Date Code Title Description
ST Notification of lapse