WO2021210020A4 - A noise processing unit for a motor vehicle - Google Patents

A noise processing unit for a motor vehicle Download PDF

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Publication number
WO2021210020A4
WO2021210020A4 PCT/IN2021/050376 IN2021050376W WO2021210020A4 WO 2021210020 A4 WO2021210020 A4 WO 2021210020A4 IN 2021050376 W IN2021050376 W IN 2021050376W WO 2021210020 A4 WO2021210020 A4 WO 2021210020A4
Authority
WO
WIPO (PCT)
Prior art keywords
processing unit
chamber
noise processing
chambers
motor vehicle
Prior art date
Application number
PCT/IN2021/050376
Other languages
French (fr)
Other versions
WO2021210020A1 (en
Inventor
Bharaniram Senthilkumar
Mani Boobalan
Original Assignee
Tvs Motor Company Limited
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 Tvs Motor Company Limited filed Critical Tvs Motor Company Limited
Priority to CN202180026938.9A priority Critical patent/CN115461530A/en
Priority to EP21788413.9A priority patent/EP4136330A4/en
Publication of WO2021210020A1 publication Critical patent/WO2021210020A1/en
Publication of WO2021210020A4 publication Critical patent/WO2021210020A4/en

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
    • F01N1/08—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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/08—Gas passages being formed between the walls of an outer shell and an inner 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of 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
    • 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
    • F01N2490/18—Dimensional characteristics of gas chambers
    • 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The present subject matter relates to an exhaust system with a noise processing unit (225) like a muffler for a motor vehicle. The noise processing unit (225) is part of an exhaust system (102) connected to an internal combustionengine (101). The noise processing unit (225) comprises one or more intermediatechamber(s) (311) that are selectively disposed physically between plurality of firstchamber(s) (301, 302). One or more second chamber(s) (321) are disposedsubsequent to the plurality of first chambers (301, 302). The noise processing unit(225) is configured to direct exhaust gases to flow through the plurality of firstchambers (301, 302), subsequently through the one or more intermediatechambers (311) and then through the one or more second chambers (321). Thenoise processing unit (225) occupies less space and performs effective attenuationof noise.

Claims

AMENDED CLAIMS received by the International Bureau on 15 October 2021 (15.10.2021) We Claim:
1. [Amended] A noise processing unit (225) for a motor vehicle (100), said noise processing unit (225) comprising: plurality of first chambers (301, 302), said plurality of first chambers (301,302) comprises a primary first chamber (301) and a secondary first chamber (302), wherein said primary first chamber (301) being configured to receive exhaust gases from an internal combustion engine (101); one or more second chamber(s) (321), said one or more second chamber connected to said secondary first chamber (302); and one or more intermediate chamber(s) (311), wherein said one or more intermediate chambers (311) being disposed between said primary first chamber (301) and said secondary first chamber (302) of said plurality of first chamber(s) (301, 302), wherein said noise processing unit (225) being configured to direct flow of exhaust gases from primary first chamber (301) to secondary first chamber (302) bypassing said one or more intermediate chambers (311), wherein said primary second chamber (302) being configured to direct flow of exhaust gases to said one or more intermediate chamber (311), and said one or more intermediate chamber (311) being configured to direct flow of exhaust gases to said one or more second chambers (321).
2. [Amended] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein said one or more intermediate chamber(s) (311) comprises a cumulative volume less than a cumulative volume of any one of said plurality of first chambers (301, 302) and said one or more second chambers (321), and wherein said one or more second chambers (321) being disposed at a downstream portion of said noise processing unit (225).
3. [Amended] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein said one or more intermediate chamber(s) (311) being configured to change a direction of flow of exhaust gases in two or more direction(s).
4. [Amended] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein said plurality of first chambers (301, 302), said one or more intermediate chambers (311) and said one or more second chambers (321) being disposed adjoiningly along an axis (A- A’) of the noise processing unit (225).
5. [Originally Filed] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein said one or more intermediate chambers (311) comprises at least one intermediate chamber (311) disposed substantially at a mid-portion of said noise processing unit (225) and said at least one intermediate chamber (311) being formed by a first baffle plate (331) and a second baffle plate (332) disposed in proximity to each other.
6. [Originally Filed] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein noise processing unit (225) comprises a mounting member (350) and said mounting member (350) being secured to an outer casing (360) of said noise processing unit (225) at a portion in proximity to said intermediate chamber (311).
7. [Amended] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein said primary first chamber (301) and said secondary first chamber (302), being connected by a first connector (341) bypassing said intermediate chamber (311).
8. [Amended] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein said noise processing unit (225) comprises a second connector (342) connecting said secondary first chamber (302) to said intermediate chamber (311), and a third connector (343) connects said intermediate chamber (311) to one of said one or more second chambers (321) passing through a third baffle (333) forming one of said one or more second chambers (321).
9. [Amended] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 7, wherein said noise processing unit (225) comprises at least two of said first connector (341), a second connector (342) and a third connector (343) disposed at an offset from an axis (A-A’) of the noise processing unit (225).
10. [Amended] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein said motor vehicle (102) comprises a wheel base in range of 1200-1400 millimeters.
11. [Amended] The noise processing unit (225) for said motor vehicle (100) as claimed in claim 1, wherein said exhaust system (102) comprises an exhaust pipe (215) with an outlet portion (211), said outlet portion (211) comprises an extended portion (366) extending into one of said plurality of first chambers (301, 302) and said one or more second chambers (321) comprises an out-pipe (345), and wherein at least one of said outlet portion (211) and said out-pipe (345) is provided with perforations.
12. [Amended] A method of processing exhaust gases by a noise processing unit (225), said method comprising steps of: passing said exhaust gases through plurality of first chambers (301, 302) of said noise processing unit (225), said plurality of first chambers (301, 302) comprises a primary first chamber (301) and a secondary first chamber (302); passing said exhaust gases through one or more intermediate chambers (311) selectively disposed between said primary first chamber (301) and said primary second chamber (302) of said plurality of first chambers (301, 302); and directing said exhaust gases through said one or more second chambers (321).
Figure imgf000007_0001
PCT/IN2021/050376 2020-04-15 2021-04-15 A noise processing unit for a motor vehicle WO2021210020A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180026938.9A CN115461530A (en) 2020-04-15 2021-04-15 Noise processing unit for a motor vehicle
EP21788413.9A EP4136330A4 (en) 2020-04-15 2021-04-15 A noise processing unit for a motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202041016201 2020-04-15
IN202041016201 2020-04-15

Publications (2)

Publication Number Publication Date
WO2021210020A1 WO2021210020A1 (en) 2021-10-21
WO2021210020A4 true WO2021210020A4 (en) 2021-12-16

Family

ID=78083633

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2021/050376 WO2021210020A1 (en) 2020-04-15 2021-04-15 A noise processing unit for a motor vehicle

Country Status (3)

Country Link
EP (1) EP4136330A4 (en)
CN (1) CN115461530A (en)
WO (1) WO2021210020A1 (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3042138A (en) * 1961-02-07 1962-07-03 Reinert Richard Exhaust muffler
US5173577A (en) * 1990-09-04 1992-12-22 Ap Parts Manufacturing Co. Stamp formed muffler with low back pressure
US5376341A (en) * 1992-07-24 1994-12-27 Corning Incorporated Catalytic converter for motorcycles
CN2264251Y (en) * 1996-09-17 1997-10-08 三阳工业股份有限公司 Silencer
US5783782A (en) * 1996-10-29 1998-07-21 Tenneco Automotive Inc. Multi-chamber muffler with selective sound absorbent material placement
US6935461B2 (en) * 1998-08-18 2005-08-30 Gregory M. Marocco Exhaust sound and emission control systems
JP2002235522A (en) * 2001-02-09 2002-08-23 Komatsu Ltd Muffler
DE10316799A1 (en) * 2003-04-11 2004-10-28 Man Nutzfahrzeuge Ag Combined exhaust gas aftertreatment / noise reduction device in the exhaust line of an internal combustion engine
US7287622B2 (en) * 2004-12-20 2007-10-30 Arctic Cat Inc. Exhaust muffler
CN2816367Y (en) * 2005-08-09 2006-09-13 林辉江 IC engine exhausting silencer for automobile
CN201474756U (en) * 2009-09-08 2010-05-19 博浪柯(浙江)机电制造有限公司 Single-row gas pipe muffler for diesel generator
CN101737122A (en) * 2010-01-28 2010-06-16 任小平 Exhaust muffler of high-power diesel engine

Also Published As

Publication number Publication date
WO2021210020A1 (en) 2021-10-21
EP4136330A1 (en) 2023-02-22
CN115461530A (en) 2022-12-09
EP4136330A4 (en) 2024-04-17

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