US2897909A - Silencer for motor vehicles - Google Patents

Silencer for motor vehicles Download PDF

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Publication number
US2897909A
US2897909A US742085A US74208558A US2897909A US 2897909 A US2897909 A US 2897909A US 742085 A US742085 A US 742085A US 74208558 A US74208558 A US 74208558A US 2897909 A US2897909 A US 2897909A
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United States
Prior art keywords
silencer
casing
motor vehicles
tubes
tube
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Expired - Lifetime
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US742085A
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Abarth Carlo
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Abarth and C SpA
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Abarth and C 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.)
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    • 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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials

Definitions

  • This invention relates to an exhaust silencer for internal combustion engines, more particularly for use on the Renault-Dauphine sport motor car instead of the original silencer, which increases the engine efficiency through affording a satisfactory silencing.
  • Figure 1 is an elevational view of the silencer
  • Figure 2 is a plan view of Figure 1 in section on line IIII of Figure 1,
  • Figures 3 and 4 are sectional views on an enlarged scale respectively on lines III-III of Figure 1 and IVIV of Figure 2.
  • the silencer comprises a frusto-conical casing of flattened cross-sectional shape made up of two halves 1, 2 having longitudinal flanges for welding to each other as shown at 3.
  • Two perforated metal tubes 4, 5 are arranged within the casing 1 and are supported at their ends in the casing by drawn sheet metal plates 6, 7.
  • Two discharge tubes 9, are connected on the extension of tubes 4, 5 to the rear of the casing and are slightly inclined upwardly as shown in Figure 1.
  • a filling 8 of sound deadening material, such as glass wool is interposed between the perforated tubes 4, 5 and easing 1, 2.
  • 11 denotes stiffening ribs on the casing halves 1, 2, 12 being a drawn sheet metal plate secured to the fore end of the casing and having connected therewith the first rectilinear portion 13a of the exhaust conduit.
  • the exhaust conduit in the improved silencer is of substantial length, which improves effectiveness of the silencer.
  • the rectilinear portion 13a is followed by a cranked portion 13b bent to the rear, a further rectilinear portion 13c, and an upwardly bent portion 13d leading to the fitting 15 for attachment to the exhaust manifold of the engine.
  • a further tube 18, adapted to improve deadening of the exhaust noise is arranged within the tube 13.
  • the walls of the tube 18 contact at three regions at least with the inner walls of the tube 13.
  • a gas expansion chamber is confined within the casing between plates 12 and 7 and has arranged therein a plate 14 in which apertures 14a are provided for the flow of gases which are deflected as shown by the arrows in Figure 2.
  • Exhaust silencer for internal combustion engines more particularly on the Renault-Dauphine sport car characterized in that the silencer comprises: a flattened substantially frusto conical casing having a forward expansion chamber subdivided by a perforated partition into two compartments and a rear silencing chamber comprising two perforated tubes insulated by sound deadening material from the casing, the said two tubes being connected with two outlet tubes for exhaust of the gases to the outside, the gas expansion chamber being connected through a tube of substantial length to the exhaust manifold of the engine; in that the tubes arranged within the casing are supported at their ends by a pair of plates, the expansion chamber being confined between the first plate supporting the tubes and a plate connected with the exhaust manifold, a third plate being interposed with staggered holes between the two first mentioned plates; in that the tube leading from the silencer to the exhaust manifold comprises a first rectilinear portion extending along the axis of the silencer casing, a cranked portion, a further rectiline

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

Description

Aug. 4, 1959 c. ABARTH SILENCER FOR MOTOR VEHICLES 2 Sheets-Sheet 1 Filed June 16, 1958 m? r. g Y m m B a A H 5 a4 a C m Q Aug. 4, 1,959 c. ABARTH SILENCER FOR MOTOR VEHICLES Filed June 16, '1958 2 Sheets-Sheet 2 United States Patent SILENCER FOR MOTOR VEHICLES Carlo Abarth, Turin, Italy, assignor to Abarth & 00., Turin, Italy Application June 16, 1958, Serial No. 742,085
Claims priority, application Italy August 7, 1957 1 Claim. (Cl. 181-50) This invention relates to an exhaust silencer for internal combustion engines, more particularly for use on the Renault-Dauphine sport motor car instead of the original silencer, which increases the engine efficiency through affording a satisfactory silencing.
The characteristic features of the improved silencer will be understood from the appended description referring to the accompanying drawing wherein:
Figure 1 is an elevational view of the silencer,
Figure 2 is a plan view of Figure 1 in section on line IIII of Figure 1,
Figures 3 and 4 are sectional views on an enlarged scale respectively on lines III-III of Figure 1 and IVIV of Figure 2.
The silencer comprises a frusto-conical casing of flattened cross-sectional shape made up of two halves 1, 2 having longitudinal flanges for welding to each other as shown at 3. Two perforated metal tubes 4, 5 are arranged within the casing 1 and are supported at their ends in the casing by drawn sheet metal plates 6, 7.
Two discharge tubes 9, are connected on the extension of tubes 4, 5 to the rear of the casing and are slightly inclined upwardly as shown in Figure 1.
A filling 8 of sound deadening material, such as glass wool is interposed between the perforated tubes 4, 5 and easing 1, 2.
11 denotes stiffening ribs on the casing halves 1, 2, 12 being a drawn sheet metal plate secured to the fore end of the casing and having connected therewith the first rectilinear portion 13a of the exhaust conduit.
As distinct from the original silencer structure on the Renault-Dauphine car, the exhaust conduit in the improved silencer is of substantial length, which improves effectiveness of the silencer. The rectilinear portion 13a is followed by a cranked portion 13b bent to the rear, a further rectilinear portion 13c, and an upwardly bent portion 13d leading to the fitting 15 for attachment to the exhaust manifold of the engine.
A further tube 18, adapted to improve deadening of the exhaust noise is arranged Within the tube 13. The walls of the tube 18 contact at three regions at least with the inner walls of the tube 13.
A gas expansion chamber is confined within the casing between plates 12 and 7 and has arranged therein a plate 14 in which apertures 14a are provided for the flow of gases which are deflected as shown by the arrows in Figure 2.
16, 17 denote the fittings for attachment of the silencer to the motor vehicle.
What I claim is:
Exhaust silencer for internal combustion engines more particularly on the Renault-Dauphine sport car, characterized in that the silencer comprises: a flattened substantially frusto conical casing having a forward expansion chamber subdivided by a perforated partition into two compartments and a rear silencing chamber comprising two perforated tubes insulated by sound deadening material from the casing, the said two tubes being connected with two outlet tubes for exhaust of the gases to the outside, the gas expansion chamber being connected through a tube of substantial length to the exhaust manifold of the engine; in that the tubes arranged within the casing are supported at their ends by a pair of plates, the expansion chamber being confined between the first plate supporting the tubes and a plate connected with the exhaust manifold, a third plate being interposed with staggered holes between the two first mentioned plates; in that the tube leading from the silencer to the exhaust manifold comprises a first rectilinear portion extending along the axis of the silencer casing, a cranked portion, a further rectilinear portion extending rearwardly, a further cranked portion, a rectilinear upwardly extending portion and a fitting for attachment to the exhaust manifold; and in that a further tube is arranged within the tube leading from the exhaust manifold to the silencer and contacts at three regions at least with the inner Walls of the first mentioned tube.
No references cited.
US742085A 1957-08-07 1958-06-16 Silencer for motor vehicles Expired - Lifetime US2897909A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2897909X 1957-08-07

Publications (1)

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US2897909A true US2897909A (en) 1959-08-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166150A (en) * 1961-02-17 1965-01-19 William H Phelps Engine exhaust silencer
US3563339A (en) * 1969-05-12 1971-02-16 Tenneco Inc Muffler
EP2314834A1 (en) * 2009-10-15 2011-04-27 J. Eberspächer GmbH & Co. KG Exhaust system and Y-splitter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166150A (en) * 1961-02-17 1965-01-19 William H Phelps Engine exhaust silencer
US3563339A (en) * 1969-05-12 1971-02-16 Tenneco Inc Muffler
EP2314834A1 (en) * 2009-10-15 2011-04-27 J. Eberspächer GmbH & Co. KG Exhaust system and Y-splitter

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