FR2384104A1 - Silencer for automobile IC engine exhaust - has intermediate tube between inner tube and casing to form second resonator - Google Patents

Silencer for automobile IC engine exhaust - has intermediate tube between inner tube and casing to form second resonator

Info

Publication number
FR2384104A1
FR2384104A1 FR7739396A FR7739396A FR2384104A1 FR 2384104 A1 FR2384104 A1 FR 2384104A1 FR 7739396 A FR7739396 A FR 7739396A FR 7739396 A FR7739396 A FR 7739396A FR 2384104 A1 FR2384104 A1 FR 2384104A1
Authority
FR
France
Prior art keywords
silencer
chamber
inner tube
casing
tube
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
FR7739396A
Other languages
French (fr)
Inventor
Walter Bauerschmidt
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of FR2384104A1 publication Critical patent/FR2384104A1/en
Pending 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • 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
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • 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

Abstract

The silencer for a vehicle engine has a cylindrical outer casing with an inlet chamber (5) at one end. The inlet chamber is connected to a buffer chamber (6) at the other end of the casing by an inner tube (7). This has perforations (8) in its wall at its far end. The outlet chamber (9) is formed at the centre of the silencer by internal walls (10a, 10b) on either side of the outlet stub (3). These walls extend to an intermediate tube (11) which has a perforated wall and surrounds the inner tube with an annular space (15) between them. A second resonator is thus formed by the chamber (14) round the end of the inner tube, the annular space (15) between the tubes and the chamber (16) at the inlet side of the intermediate tube.
FR7739396A 1977-03-15 1977-12-21 Silencer for automobile IC engine exhaust - has intermediate tube between inner tube and casing to form second resonator Pending FR2384104A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772711190 DE2711190C3 (en) 1977-03-15 1977-03-15 Silencers for flowing gases, in particular exhaust gases from vehicle internal combustion engines

Publications (1)

Publication Number Publication Date
FR2384104A1 true FR2384104A1 (en) 1978-10-13

Family

ID=6003668

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739396A Pending FR2384104A1 (en) 1977-03-15 1977-12-21 Silencer for automobile IC engine exhaust - has intermediate tube between inner tube and casing to form second resonator

Country Status (4)

Country Link
AT (1) AT364201B (en)
DE (1) DE2711190C3 (en)
FR (1) FR2384104A1 (en)
IT (1) IT1088682B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3807948A1 (en) * 1988-03-10 1989-09-28 Eberspaecher J Silencer for vehicle engines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2026607A1 (en) * 1968-12-20 1970-09-18 Eberspaecher J

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2026607A1 (en) * 1968-12-20 1970-09-18 Eberspaecher J

Also Published As

Publication number Publication date
AT364201B (en) 1981-10-12
DE2711190B2 (en) 1979-01-11
DE2711190A1 (en) 1978-09-21
ATA908677A (en) 1981-02-15
DE2711190C3 (en) 1979-09-06
IT1088682B (en) 1985-06-10

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