SE505910C2 - Catalyst test in an internal combustion engine exhaust system - Google Patents

Catalyst test in an internal combustion engine exhaust system

Info

Publication number
SE505910C2
SE505910C2 SE9503762A SE9503762A SE505910C2 SE 505910 C2 SE505910 C2 SE 505910C2 SE 9503762 A SE9503762 A SE 9503762A SE 9503762 A SE9503762 A SE 9503762A SE 505910 C2 SE505910 C2 SE 505910C2
Authority
SE
Sweden
Prior art keywords
substance
injector
exhaust gases
process according
gas sensor
Prior art date
Application number
SE9503762A
Other languages
Swedish (sv)
Other versions
SE9503762D0 (en
SE9503762L (en
Inventor
Amir Baranzai
Ingemar Lundstroem
Spetz Anita Lloyd
Original Assignee
Forskarpatent I Linkoeping Ab
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 Forskarpatent I Linkoeping Ab filed Critical Forskarpatent I Linkoeping Ab
Priority to SE9503762A priority Critical patent/SE505910C2/en
Publication of SE9503762D0 publication Critical patent/SE9503762D0/en
Priority to PCT/SE1996/001356 priority patent/WO1997015751A1/en
Priority to AU73559/96A priority patent/AU7355996A/en
Publication of SE9503762L publication Critical patent/SE9503762L/en
Publication of SE505910C2 publication Critical patent/SE505910C2/en

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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/02—Catalytic activity of catalytic converters
    • 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
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Engines (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

Method for the testing of catalysers of combustion engines, where a gas sensor is placed in the exhausts after the catalyser which is sensitive to some substances normally burnable for the catalyser, for instance a thin oil. While the engine runs, momentarily a suitable amount of this substance is fed to the inlet of the engine, so that the gas sensor indicates the presence of the substance in the exhaust gases and so indicates the correct functioning of the catalyser system.

Description

505 910 2 om motorns eget bränsle insprutas som testämne. enda resultatet är att motorn missar ett par tändningar. För att testpersonalen inte skall behöva hantera så brandfarliga ämnen som bensin kan i stället en tunn olja användas, exempelvis vegetabilisk. Detta har dessutom den fördelen att påverkan på motorns gäng blir mindre eftersom oljan ej deltar aktivt i förbränningsförloppet i motorn. 505 910 2 if the engine's own fuel is injected as a test substance. the only result is that the engine misses a couple of ignitions. In order for the test staff not to have to handle such flammable substances as petrol, a thin oil can be used instead, for example vegetable. This also has the advantage that the impact on the engine thread is less because the oil does not actively participate in the combustion process in the engine.

Det har visat sig att exempelvis den föreslagna sensorn mycket väl hinner reagera på den korta puls som ges av den extra- insprutade mängden av förbrännbart ämne. Om så önskas kan naur- ligtvis testet upprepas för ökande av säkerheten.It has been found that, for example, the proposed sensor has very good time to react to the short pulse given by the extra-injected amount of combustible substance. If desired, the test can of course be repeated to increase safety.

Förfarandet enlig uppfinningen kan vid behov varieras efter motortypen som skall testas och det kan exempelvis i vissa fall vara lämpligt att tillföra den förbrännbara extra mängden av det lämpliga ämnet till avgassystemet efter motorn men före katalys- atorn. Härvid kan man även tillföra ytterligare luft för att säkerställa att tillräckligt med syre finns i avgaserna för att katalysatorn skall kunna ombesörja testförbränningen. För många bilar finns redan en anslutning härför och det är inte svårare att göra denna katalysatortest än att testa ERG-ventilers funktion.The process according to the invention can, if necessary, be varied according to the type of engine to be tested and it may, for example, in some cases be suitable to supply the combustible extra amount of the suitable substance to the exhaust system after the engine but before the catalyst. In this case, additional air can also be supplied to ensure that sufficient oxygen is present in the exhaust gases for the catalyst to be able to take care of the test combustion. For many cars there is already a connection for this and it is no more difficult to do this catalyst test than to test the function of ERG valves.

Claims (6)

505 910 3 P A T E N T K R A V505 910 3 P A T E N T K R A V 1. Förfarande för att testa förbränningsmotorers katalysatorer, kännetecknat av att i avgaserna efter katalysatorn placeras en gassensor känslig för något av katalysatorn normalt förbrännbart ämne och att under det att motorn går tillföres momentant en läm- plig mängd av detta ämne till motorns insug, sä att gassensorn indikerar ämnets förekomst i avgaserna och därigenon1katalysator- systemets funktion.Process for testing the catalysts of internal combustion engines, characterized in that a gas sensor sensitive to any of the catalyst's combustible substances normally placed in the exhaust gases is placed in the exhaust gases and that a suitable amount of this substance is momentarily supplied to the engine intake the gas sensor indicates the presence of the substance in the exhaust gases and thus the function of the catalyst system. 2. Förfarande enligt krav 1,kännetecknat av att ämnet som tillsättes är en tunn olja.Process according to Claim 1, characterized in that the substance to be added is a thin oil. 3. Förfarande enligt krav 1 eller 2, kännetecknat av att sen- sorn som användes är av den typ som innefattar ett katalytisk ytskikt med en därunder anordnad halvledarkomponent som reagerar pá de förändringar i det elektriska fältet som erhålles vid katalytisk förbränning på ytan.Process according to Claim 1 or 2, characterized in that the sensor used is of the type which comprises a catalytic surface layer with a semiconductor component arranged below it which reacts to the changes in the electric field obtained by catalytic combustion on the surface. 4. Injektor för användning vid förfarandet i enlighet med krav 1 för testning av katalysatorer , kännetecknad av att den inne- fattar en fjäderförspänd kolv, rörlig i en kolv och frigivbart spärrbar i sitt spända läge.Injector for use in the process according to claim 1 for testing catalysts, characterized in that it comprises a spring-biased piston, movable in a piston and releasably lockable in its tensioned position. 5. Injektor enligt krav 4, kännetecknad av att injektorn är spärrbar i olika lägen motsvarande olika avgivningsvolymer.Injector according to Claim 4, characterized in that the injector is lockable in different positions corresponding to different delivery volumes. 6. Injektor enligt krav 4 eller 5,kännetecknad av att den inne- fattar ytterligare organ för injicerandet av ytterligare luft eller syre samtidigt exempelvis i forma av en ytterligare kolv/ cylinderanordning eller ventil till ett tryckluftssystem.Injector according to claim 4 or 5, characterized in that it comprises additional means for injecting additional air or oxygen simultaneously, for example in the form of an additional piston / cylinder device or valve to a compressed air system.
SE9503762A 1995-10-25 1995-10-25 Catalyst test in an internal combustion engine exhaust system SE505910C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9503762A SE505910C2 (en) 1995-10-25 1995-10-25 Catalyst test in an internal combustion engine exhaust system
PCT/SE1996/001356 WO1997015751A1 (en) 1995-10-25 1996-10-23 Testing of catalyst in the exhaust system of an internal combustion engine
AU73559/96A AU7355996A (en) 1995-10-25 1996-10-23 Testing of catalyst in the exhaust system of an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9503762A SE505910C2 (en) 1995-10-25 1995-10-25 Catalyst test in an internal combustion engine exhaust system

Publications (3)

Publication Number Publication Date
SE9503762D0 SE9503762D0 (en) 1995-10-25
SE9503762L SE9503762L (en) 1997-04-26
SE505910C2 true SE505910C2 (en) 1997-10-20

Family

ID=20399963

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9503762A SE505910C2 (en) 1995-10-25 1995-10-25 Catalyst test in an internal combustion engine exhaust system

Country Status (3)

Country Link
AU (1) AU7355996A (en)
SE (1) SE505910C2 (en)
WO (1) WO1997015751A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05263686A (en) * 1992-03-23 1993-10-12 Toyota Motor Corp Catalyst degradation judging device of internal combustion engine
FR2702516B1 (en) * 1993-03-12 1995-06-02 Siemens Automotive Sa Method for monitoring the efficiency of a heated catalytic converter, for the treatment of exhaust gases from an internal combustion engine.
DE4308661A1 (en) * 1993-03-18 1994-09-22 Emitec Emissionstechnologie Method and device for monitoring the function of a catalytic converter
US5431043A (en) * 1994-05-02 1995-07-11 General Motors Corporation Catalyst activity test

Also Published As

Publication number Publication date
WO1997015751A1 (en) 1997-05-01
AU7355996A (en) 1997-05-15
SE9503762D0 (en) 1995-10-25
SE9503762L (en) 1997-04-26

Similar Documents

Publication Publication Date Title
AU2007248900B2 (en) Engine emissions control system
US7597016B2 (en) Fuel deposit testing using burner-based exhaust flow simulation system
US20120109497A1 (en) Abnormal inter-cylinder air-fuel ratio imbalance detection apparatus for multi-cylinder internal combustion engine
US20080178574A1 (en) NOx Augmentation In Exhaust Gas Simulation System
JPH07127503A (en) Exhaust gas purification device for internal combustion engine
WO2007019329A2 (en) Secondary air injector for use with exhaust gas simulation system
US20120060480A1 (en) Exhaust gas purifiying apparatus in internal combustion engine
ES2159785T3 (en) PROCEDURE TO ESTABLISH A DIAGNOSIS OF THE OPERATION OF A DETECTOR OF THE ESTEQUIOMETRIC COMPOSITION OF EXHAUST GASES, SITUATED RIVER BELOW OF A CATALYTIC CONVERTER.
US10174692B2 (en) Method for operating an internal combustion engine
US20210231072A1 (en) Abnormality diagnosis system of downstream side air-fuel ratio detection device
US20210310433A1 (en) System and methods for combustion controls in multi-cylinder opposed piston engines
US20090038595A1 (en) Method and Device for Operating an Internal Combustion Engine
SE505910C2 (en) Catalyst test in an internal combustion engine exhaust system
CN110953061A (en) Turbocharged internal combustion engine
US20190323405A1 (en) Gasoline particulate filter filtration efficiency improvement with engine control
US5431043A (en) Catalyst activity test
Salazar Unburned hydrocarbon emission mechanisms in small engines
US4024708A (en) Multi cylinder internal combustion engine
US8315782B2 (en) Method and device for operating an internal combustion engine
Jessen et al. Bosch On Board Diagnostic solutions for Motorcycles
JP3511961B2 (en) Endurance test method for vehicle exhaust purification system
KR100199579B1 (en) Elimination apparatus for hydrocarbon emission of exhaust gas in a car
KR20070089069A (en) Method and device for operating an internal combustion engine comprising several cylinders
US20160169164A1 (en) Naturally aspirated common rail diesel engine meeting ultra low pm emission by passive exhaust after treatment
Albert Residual Gas Effects on Combustion in an Air-Cooled Utility Engine

Legal Events

Date Code Title Description
NUG Patent has lapsed