FR2278936A1 - Silencer for engine exhaust or compressor inlet - increases effective length of gas passage with traingular inserts - Google Patents

Silencer for engine exhaust or compressor inlet - increases effective length of gas passage with traingular inserts

Info

Publication number
FR2278936A1
FR2278936A1 FR7318471A FR7318471A FR2278936A1 FR 2278936 A1 FR2278936 A1 FR 2278936A1 FR 7318471 A FR7318471 A FR 7318471A FR 7318471 A FR7318471 A FR 7318471A FR 2278936 A1 FR2278936 A1 FR 2278936A1
Authority
FR
France
Prior art keywords
silencer
inserts
traingular
gas passage
engine exhaust
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.)
Pending
Application number
FR7318471A
Other languages
French (fr)
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
Priority to FR7318471A priority Critical patent/FR2278936A1/en
Publication of FR2278936A1 publication Critical patent/FR2278936A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
    • 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
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like

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 has a cylindrical body (1) with discs arranged transversely to the axis, spaced at intervals along the length. Inserts (6) of triangular cross-section are fitted between successive discs and arranged so that one corner (7) is in contact with the body wall (1) whilst there is a gap between the wall and the other two corners (8) and (9). The sides (10), (11) and (12) of the triangle are provided with holes (16), (17) and (18) of progressively decreasing cross-sectional area. This causes the air, which flows into the interior of the triangle, to flow outwards with a spiral motion which breaks up the sound waves and reduces the noise.
FR7318471A 1973-05-22 1973-05-22 Silencer for engine exhaust or compressor inlet - increases effective length of gas passage with traingular inserts Pending FR2278936A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7318471A FR2278936A1 (en) 1973-05-22 1973-05-22 Silencer for engine exhaust or compressor inlet - increases effective length of gas passage with traingular inserts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7318471A FR2278936A1 (en) 1973-05-22 1973-05-22 Silencer for engine exhaust or compressor inlet - increases effective length of gas passage with traingular inserts

Publications (1)

Publication Number Publication Date
FR2278936A1 true FR2278936A1 (en) 1976-02-13

Family

ID=9119721

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7318471A Pending FR2278936A1 (en) 1973-05-22 1973-05-22 Silencer for engine exhaust or compressor inlet - increases effective length of gas passage with traingular inserts

Country Status (1)

Country Link
FR (1) FR2278936A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752272A1 (en) * 1996-08-06 1998-02-13 Bosch Gmbh Robert SOUND INSULATION DEVICE FOR A FAN
CN102499895A (en) * 2011-10-01 2012-06-20 韩杰 Silencer
WO2021164966A1 (en) * 2020-02-17 2021-08-26 Mann+Hummel Gmbh Acoustic component and air routing line having an acoustic component

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752272A1 (en) * 1996-08-06 1998-02-13 Bosch Gmbh Robert SOUND INSULATION DEVICE FOR A FAN
CN102499895A (en) * 2011-10-01 2012-06-20 韩杰 Silencer
WO2021164966A1 (en) * 2020-02-17 2021-08-26 Mann+Hummel Gmbh Acoustic component and air routing line having an acoustic component
US12110849B2 (en) 2020-02-17 2024-10-08 Mann+Hummel Gmbh Acoustic component and air routing line having an acoustic component

Similar Documents

Publication Publication Date Title
GB1339526A (en) Gas turbine exhaust system
GB1358539A (en) Silencing apparatus
GB1349194A (en) Method and device for attenuating the noise generated by the expansion of gases into the atmosphere
GB1466512A (en) Gas stream silencer
GB1192194A (en) Silencer for Suction or Discharge of Fluids Unders Pressure
GB1520701A (en) Noise absorber for air or gas flows
FR2278936A1 (en) Silencer for engine exhaust or compressor inlet - increases effective length of gas passage with traingular inserts
KR830003645A (en) Compact Exhaust Silencer for Diesel Locomotive
GB1394605A (en) Sound muffler
US4197922A (en) Air intake pipe for an internal combustion engine
US1426352A (en) Muffler
JPS595764B2 (en) Silencer
GB1369524A (en) Acoustically damping gas flow ducts
JPS59126118U (en) Silencer for compressor
SU982397A1 (en) Silencer of gas acoustic noises
GB1364100A (en) Gas silnencer
GB1455642A (en) Mufflers
GB1419781A (en) Exhaust silencers
GB1412403A (en) Silencing devices for compressors
GB1507663A (en) Silencer for gaseous flow
JPS6444491A (en) Silencer
JPS599047Y2 (en) Silencer for diesel engines for small fishing boats
SU742626A1 (en) Pulsating flow noise silencer
SU1206447A1 (en) Pneumatic motor exhaust silencer
SU1268758A1 (en) Muffler