JPS57140508A - Exhaust gas purification - Google Patents

Exhaust gas purification

Info

Publication number
JPS57140508A
JPS57140508A JP56025142A JP2514281A JPS57140508A JP S57140508 A JPS57140508 A JP S57140508A JP 56025142 A JP56025142 A JP 56025142A JP 2514281 A JP2514281 A JP 2514281A JP S57140508 A JPS57140508 A JP S57140508A
Authority
JP
Japan
Prior art keywords
exhaust
air
detects
control unit
platinum
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.)
Granted
Application number
JP56025142A
Other languages
Japanese (ja)
Other versions
JPS622132B2 (en
Inventor
Yoshiyasu Fujitani
Hideaki Muraki
Koji Yokota
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.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs Inc
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 Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Priority to JP56025142A priority Critical patent/JPS57140508A/en
Publication of JPS57140508A publication Critical patent/JPS57140508A/en
Publication of JPS622132B2 publication Critical patent/JPS622132B2/ja
Granted 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
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/222—Control of additional air supply only, e.g. using by-passes or variable air pump drives using electric valves only
    • 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
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives

Landscapes

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

Abstract

PURPOSE:To attempt to improve the exhaust purification efficiency of an internal combustion engine by introducing air into the exhaust during acceleration so that air fuel ratio is shifted nearly to the theoretical ratio as well as purifying said exhaust by the use of platinum paradium catalyst. CONSTITUTION:Platinum-palladium (Pt-Pd) catalyst is charged in exhaust purification converter 62 in which the exhaust from engine 60 is introduced through exhaust pipe 61, and oxygen senser 73 is equipped in exhaust pipe 61. An electronic control unit 70 which controls fuel injection valve 72, detects the acceleration state and sends signals to exhaust purification air valve 74 is also provided. When the oxygen sensor 73 detects the oxygen concentration in exhaust, the fuel injection valve is controlled by the control unit 70 so that the concentration becomes about zero. While, in acceleration state, the control unit 70 detects it, sends the signal to the air valve 74 and introduces a prescribed amount of air into exhaust so that air excess ratio in the exhaust is adjusted to be 1.0. Thus harmful components in the exhaust can be purified at high efficiency.
JP56025142A 1981-02-23 1981-02-23 Exhaust gas purification Granted JPS57140508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56025142A JPS57140508A (en) 1981-02-23 1981-02-23 Exhaust gas purification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025142A JPS57140508A (en) 1981-02-23 1981-02-23 Exhaust gas purification

Publications (2)

Publication Number Publication Date
JPS57140508A true JPS57140508A (en) 1982-08-31
JPS622132B2 JPS622132B2 (en) 1987-01-17

Family

ID=12157727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56025142A Granted JPS57140508A (en) 1981-02-23 1981-02-23 Exhaust gas purification

Country Status (1)

Country Link
JP (1) JPS57140508A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101395505B1 (en) * 2014-02-07 2014-05-14 주식회사 나오텍크 An oil-elimination apparatus of compressor air
CN109046350A (en) * 2018-08-03 2018-12-21 张家瑞 A kind of vehicle exhaust efficient process catalyst and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101395505B1 (en) * 2014-02-07 2014-05-14 주식회사 나오텍크 An oil-elimination apparatus of compressor air
CN109046350A (en) * 2018-08-03 2018-12-21 张家瑞 A kind of vehicle exhaust efficient process catalyst and preparation method thereof

Also Published As

Publication number Publication date
JPS622132B2 (en) 1987-01-17

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