GB1383881A - Afterburning apparatus for exhaust gases from internal combustion engines - Google Patents

Afterburning apparatus for exhaust gases from internal combustion engines

Info

Publication number
GB1383881A
GB1383881A GB1287273A GB1287273A GB1383881A GB 1383881 A GB1383881 A GB 1383881A GB 1287273 A GB1287273 A GB 1287273A GB 1287273 A GB1287273 A GB 1287273A GB 1383881 A GB1383881 A GB 1383881A
Authority
GB
United Kingdom
Prior art keywords
exhaust gas
gas
catalytic reactor
burner
duct
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
GB1287273A
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 GB1383881A publication Critical patent/GB1383881A/en
Expired 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/26—Construction of thermal reactors
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2053—By-passing catalytic reactors, e.g. to prevent overheating
    • 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
    • F01N13/14—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 having thermal insulation
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/04—Catalytic converters
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/08—Thermal reactors
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/04—Combinations of different methods of purification afterburning and catalytic conversion
    • 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
    • F01N2470/30—Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

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

Abstract

1383881 Treating exhaust gas P AUGUST 16 March 1973 [7 Dec 1972] 12872/73 Heading FIB A method of removing noxious constituents from I.C. engine exhaust gases comprises passing the gases through catalytic reactors and afterburners and is characterized in that after starting from cold and during the warming-up period and at vehicle speeds up to 60 km/hr, all the exhaust gas is passed through a catalytic reactor and at speeds greater than 60 km/hr, the greater proportion of the exhaust gas is passed through an atter-burner. The device comprises an after-burner formed by a central duct 6 in which the CO and CH present in the exhaust gas is oxidized by the oxygen present in secondary air admitted upstream of the device, e.g. adjacent the exhaust valves of an engine producing the exhaust gas stream. At the upstream end of the duct is a throttle valve 4 which can be closed to direct the gas into a catalytic reactor 5, through which the gas passes to a second after-burner 7. The units are enclosed in a common housing which has a heat insulating wall 14 and an internal heat conducting partition 15 between the duct 6 and the catalytic reactor 5. During the warming-up period following starting from cold, and when the engine is running light i.e. at speeds up to 60 km/hr, the exhaust gas is directed through the catalytic reactor 5. At other times, the valve 4 is opened so that the majority of the gas passes through the duct 6, the amount of gas which passes through the catalyst being adjusted to maintain the temperature of the catalyst so that it heats the duct 6 and promotes oxidation of the CO and CH. In a modification, Fig. 2, the second after-burner 7 is arranged as an annulus around the catalytic reactor 5, the gas passing upwardly through this annulus. Each of the after-burners is packed with steel chippings 13 to promote mixing of the exhaust gas with the secondary air. The chippings 13 are retained in discrete portions of the bores of the after-burners by spaced-apart perforated screens . In a second modification Fig. 4 (not shown), the catalytic reactor 5 is arranged at the centre of the housing and is surrounded by the after-burner 6. In a third modification the device consists of two afterburners, one downstream of the other, the steel chippings being coated with a catalyst, and the whole of the exhaust gas, whatever the engine operating conditions, being passed through both after-burners. Some of the exhaust gas, after passing through the device may be recirculated to the engine intake. The apparatus for withdrawing the portion to be recirculated minimises the inclusion of soot particles in the recirculated portion.
GB1287273A 1972-12-07 1973-03-16 Afterburning apparatus for exhaust gases from internal combustion engines Expired GB1383881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2259946A DE2259946A1 (en) 1972-12-07 1972-12-07 AFTERBURN DEVICE FOR THE REMOVAL OF TOXIC COMPONENTS IN THE EXHAUST GASES FROM COMBUSTION MACHINES

Publications (1)

Publication Number Publication Date
GB1383881A true GB1383881A (en) 1974-02-12

Family

ID=5863815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1287273A Expired GB1383881A (en) 1972-12-07 1973-03-16 Afterburning apparatus for exhaust gases from internal combustion engines

Country Status (3)

Country Link
DE (1) DE2259946A1 (en)
GB (1) GB1383881A (en)
SE (1) SE397117B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1291509A3 (en) * 2001-08-31 2004-08-11 Siemens Aktiengesellschaft Valve assembly having an internal bypass flow
US10184373B2 (en) 2016-01-21 2019-01-22 Ge Jenbacher Gmbh & Co. Og Internal combustion engine for reducing exhaust gas emissions

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5874862A (en) * 1981-10-29 1983-05-06 Nippon Soken Inc Exhaust-gas recirculating apparatus for diesel engine
US4485621A (en) * 1983-01-07 1984-12-04 Cummins Engine Company, Inc. System and method for reducing particulate emissions from internal combustion engines
US4512147A (en) * 1983-01-07 1985-04-23 Cummins Engine Company, Inc. Method and apparatus for removing carbon particles from engine exhausts
JP2712758B2 (en) * 1990-05-28 1998-02-16 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
DE4205496C1 (en) * 1992-02-22 1993-01-28 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1291509A3 (en) * 2001-08-31 2004-08-11 Siemens Aktiengesellschaft Valve assembly having an internal bypass flow
US10184373B2 (en) 2016-01-21 2019-01-22 Ge Jenbacher Gmbh & Co. Og Internal combustion engine for reducing exhaust gas emissions

Also Published As

Publication number Publication date
SE397117B (en) 1977-10-17
DE2259946A1 (en) 1974-06-27

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees