JPS5698544A - Air fuel ratio controller of engine - Google Patents

Air fuel ratio controller of engine

Info

Publication number
JPS5698544A
JPS5698544A JP148180A JP148180A JPS5698544A JP S5698544 A JPS5698544 A JP S5698544A JP 148180 A JP148180 A JP 148180A JP 148180 A JP148180 A JP 148180A JP S5698544 A JPS5698544 A JP S5698544A
Authority
JP
Japan
Prior art keywords
fuel ratio
secondary air
air fuel
air
slight
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
JP148180A
Other languages
Japanese (ja)
Inventor
Yoshinori Motoiden
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo 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 Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP148180A priority Critical patent/JPS5698544A/en
Publication of JPS5698544A publication Critical patent/JPS5698544A/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
    • 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
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: To prevent exhaust gas from being excessively diluted by decreasing the quantity of secondary air to be supplied for enriching the air fuel ratio of a mixture.
CONSTITUTION: In a case where there is a need to enrich the air fuel ratio as the case of low load driving, secondary air is ejected through the first secondary air supply passage 12 to an exhaust gas component concentration sensor 10, and a false signal is generated so that the air fuel ratio detected by the exhasut gas component concentration sensor 10 becomes leaner than the theoretical air fuel ratio. The air fuel ratio is enriched by this false signal to improve the drivability. In this step, at the initial time when the supply of secondary air is started from the passage 12, the exhasut gas is diluted by secondary air, and moved to the lean side. However, since the quantity of secondary air supplied is slight, the movement is also slight, and hence the lowering of the purification function of NOx in this transient period can be suppressed.
COPYRIGHT: (C)1981,JPO&Japio
JP148180A 1980-01-09 1980-01-09 Air fuel ratio controller of engine Pending JPS5698544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP148180A JPS5698544A (en) 1980-01-09 1980-01-09 Air fuel ratio controller of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP148180A JPS5698544A (en) 1980-01-09 1980-01-09 Air fuel ratio controller of engine

Publications (1)

Publication Number Publication Date
JPS5698544A true JPS5698544A (en) 1981-08-08

Family

ID=11502621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP148180A Pending JPS5698544A (en) 1980-01-09 1980-01-09 Air fuel ratio controller of engine

Country Status (1)

Country Link
JP (1) JPS5698544A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151325U (en) * 1982-04-05 1983-10-11 マツダ株式会社 Engine air-fuel ratio sensor - protection device
FR2865765A1 (en) * 2004-02-04 2005-08-05 Faurecia Sys Echappement Exhaust volume for vehicle with diesel engine, has closing with sleeve having flange of reduced thickness for support on wall and increasing sleeve section along its length, where welded joint is formed at external periphery of flange
WO2019026249A1 (en) * 2017-08-03 2019-02-07 本田技研工業株式会社 Carburetor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151325U (en) * 1982-04-05 1983-10-11 マツダ株式会社 Engine air-fuel ratio sensor - protection device
FR2865765A1 (en) * 2004-02-04 2005-08-05 Faurecia Sys Echappement Exhaust volume for vehicle with diesel engine, has closing with sleeve having flange of reduced thickness for support on wall and increasing sleeve section along its length, where welded joint is formed at external periphery of flange
WO2019026249A1 (en) * 2017-08-03 2019-02-07 本田技研工業株式会社 Carburetor

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