GB358970A - Improvements relating to exhaust silencers - Google Patents

Improvements relating to exhaust silencers

Info

Publication number
GB358970A
GB358970A GB17823/30A GB1782330A GB358970A GB 358970 A GB358970 A GB 358970A GB 17823/30 A GB17823/30 A GB 17823/30A GB 1782330 A GB1782330 A GB 1782330A GB 358970 A GB358970 A GB 358970A
Authority
GB
United Kingdom
Prior art keywords
apertures
helical
inner cylinder
baffles
entering
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.)
Expired
Application number
GB17823/30A
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
Publication of GB358970A publication Critical patent/GB358970A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/16Silencing apparatus characterised by method of silencing by using movable parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/08Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/12Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/05Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Exhaust Silencers (AREA)

Abstract

358,970. Exhaust silencers. WILMAN, Z., 6, Rue de Bizerte, Paris. June 10, 1930, No. 17823. Convention date, Nov. 23, 1929. [Class 7 (ii).] The silencer consists of an outer cylinder 1b and a concentric inner cylinder open to atmosphere at both ends, two or more helical baffles between the cylinders forming helical conduits for cooling air and exhaust gas respectively, the exhaust gas conduit being of decreasing cross section in the direction of flow and communicating with the inner cylinder through apertures of progressively increasing cross section. In Fig. 1, two baffles 5, 11 are employed to form conduits for exhaust gas entering at 2, and air entering at 2a, the apertures being shown at 6. A portion of the gases may escape through apertures of increasing size into an auxiliary conduit 1c the outlet from which is controlled by a throttle 1d. Air passes through the inner cylinder due to the motion of the vehicle on which the silencer is mounted. In Fig. 2, four helical baffles are employed of which one pair b, c forms a passage of decreasing area for gases entering at 2, and another pair a, d a passage for gases entering at 2d. Between these pairs of baffles two helical passages are formed for air entering respectively at 2f and 2g. In a modification, the inner cylinder is of divergent form towards the outlet end, and the apertures 6 are formed with lips disposed in the direction of flow. The Specification as open to inspection under Sect. 91 (3) (a) describes also the construction shown in Fig. 1 (Cancelled), in which the exhaust pipe 2 is connected to a casing 1b enclosing a concentric tube 3 the inner end 4 of which is closed and of conical form. A single helical baffle 5 is provided, and the apertures of increasing size are shown at 6. A modified form is also described in which the helical baffle is duplicated in the reverse direction, a concentric apertured wall being located between the casing 1b and the inner cylinder 3. A further modified form is also described in which the silencer is traversed axially by a tube 7, Fig. 3 (Cancelled), one end of which communicates through apertures and a helical baffle 9, with the exhaust pipe 2, and the other end opens into the throat of a bi-conical tube 8 to produce an ejector action. The sound waves are reflected upwardly by surfaces 10. These constructions are not described in the Specification as accepted.
GB17823/30A 1929-11-23 1930-06-10 Improvements relating to exhaust silencers Expired GB358970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE358970X 1929-11-23

Publications (1)

Publication Number Publication Date
GB358970A true GB358970A (en) 1931-10-12

Family

ID=3868374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17823/30A Expired GB358970A (en) 1929-11-23 1930-06-10 Improvements relating to exhaust silencers

Country Status (1)

Country Link
GB (1) GB358970A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879861A (en) * 1956-11-16 1959-03-31 Fred J Belsky Flow control unit
US3286787A (en) * 1963-08-26 1966-11-22 Garrett Corp Turbine exhaust silencer
GB2175641A (en) * 1985-05-28 1986-12-03 Tula Silencers Exhaust silencer
US4685534A (en) * 1983-08-16 1987-08-11 Burstein A Lincoln Method and apparatus for control of fluids
JP2017525556A (en) * 2014-09-02 2017-09-07 ノイ、アンジェロ ディ Filtration device for dust and other pollutants
CN107476863A (en) * 2016-06-07 2017-12-15 东北林业大学 Automobile complex muffler system with energy saving and emission reduction effects
US10001048B2 (en) * 2016-03-21 2018-06-19 Paccar Inc Cyclonic thermal diffuser and method
CN113958386A (en) * 2021-12-22 2022-01-21 诸城市大路机械有限公司 Exhaust device with silencing function

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879861A (en) * 1956-11-16 1959-03-31 Fred J Belsky Flow control unit
US3286787A (en) * 1963-08-26 1966-11-22 Garrett Corp Turbine exhaust silencer
US4685534A (en) * 1983-08-16 1987-08-11 Burstein A Lincoln Method and apparatus for control of fluids
GB2175641A (en) * 1985-05-28 1986-12-03 Tula Silencers Exhaust silencer
JP2017525556A (en) * 2014-09-02 2017-09-07 ノイ、アンジェロ ディ Filtration device for dust and other pollutants
US10001048B2 (en) * 2016-03-21 2018-06-19 Paccar Inc Cyclonic thermal diffuser and method
CN107476863A (en) * 2016-06-07 2017-12-15 东北林业大学 Automobile complex muffler system with energy saving and emission reduction effects
CN113958386A (en) * 2021-12-22 2022-01-21 诸城市大路机械有限公司 Exhaust device with silencing function
CN113958386B (en) * 2021-12-22 2022-02-25 诸城市大路机械有限公司 Exhaust device with silencing function

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