JPS57188721A - Catalytic converter - Google Patents

Catalytic converter

Info

Publication number
JPS57188721A
JPS57188721A JP56074049A JP7404981A JPS57188721A JP S57188721 A JPS57188721 A JP S57188721A JP 56074049 A JP56074049 A JP 56074049A JP 7404981 A JP7404981 A JP 7404981A JP S57188721 A JPS57188721 A JP S57188721A
Authority
JP
Japan
Prior art keywords
exhaust gas
catalyst
temperature
volume
pipe
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
JP56074049A
Other languages
Japanese (ja)
Inventor
Akira Fukumori
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.)
NIPPON RADIATOR CO Ltd
Marelli Corp
Original Assignee
NIPPON RADIATOR CO Ltd
Nihon Radiator Co Ltd
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 NIPPON RADIATOR CO Ltd, Nihon Radiator Co Ltd filed Critical NIPPON RADIATOR CO Ltd
Priority to JP56074049A priority Critical patent/JPS57188721A/en
Publication of JPS57188721A publication Critical patent/JPS57188721A/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
    • 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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2046—Periodically cooling catalytic 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
    • 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
    • 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
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F01N3/2889—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with heat exchangers 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

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

Abstract

PURPOSE:To effectively prevent the burn-out of catalyst, by providing an overheat preventing device so that the set cooling temperature of the catalyst is changed, according to the volume of exhaust gas. CONSTITUTION:Engine exhaust gas flows from a pipe 4a through a catalyst 3 for purifying the exhaust gas. The purified exhaust gas is then discharged from a pipe 4b. When the volume of exhaust gas is low, local heating to the catalyst is liable to occure so that a diaphragm 13 turns a switch 15 to a contact 16a side due to low exhaust gas pressure, resulting in that an 800 deg.C detecting switch 21a side of an exhaust gas temperature detector 18 is energized. When the temperature is raised to 800 deg.C, a solenoid valve 9 is opened for allowing cooling medium to flow from a pump 8 to a cooling pipe 5 surrounding around the catalyst 3 so as to cool the latter for preventing overheat. meanwhile, when the volume of exhaust gas is high, temperature distribution in the catalyst 3 does not vary so widely, and therefore a 900 deg.C detecting switch 21b side of the exhaust gas temperature detector 18 is energized. When the temperature is raised to 900 deg.C, the catalyst is cooled for preventing buronout as above-mentioned.
JP56074049A 1981-05-16 1981-05-16 Catalytic converter Pending JPS57188721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56074049A JPS57188721A (en) 1981-05-16 1981-05-16 Catalytic converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56074049A JPS57188721A (en) 1981-05-16 1981-05-16 Catalytic converter

Publications (1)

Publication Number Publication Date
JPS57188721A true JPS57188721A (en) 1982-11-19

Family

ID=13535930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56074049A Pending JPS57188721A (en) 1981-05-16 1981-05-16 Catalytic converter

Country Status (1)

Country Link
JP (1) JPS57188721A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0809000A2 (en) * 1996-05-24 1997-11-26 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an internal combustion engine
JP2015190311A (en) * 2014-03-27 2015-11-02 富士重工業株式会社 Cooling mechanism for catalyst converter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0809000A2 (en) * 1996-05-24 1997-11-26 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an internal combustion engine
EP0809000A3 (en) * 1996-05-24 1998-06-03 Toyota Jidosha Kabushiki Kaisha An exhaust gas purification device for an internal combustion engine
US6029443A (en) * 1996-05-24 2000-02-29 Toyota Jidosha Kabushiki Kaisha Catalyst with upstream cooling and downstream heating
JP2015190311A (en) * 2014-03-27 2015-11-02 富士重工業株式会社 Cooling mechanism for catalyst converter

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