IT1261114B - ELECTRONIC CALCULATION SYSTEM OF THE MIXTURE TITLE. - Google Patents

ELECTRONIC CALCULATION SYSTEM OF THE MIXTURE TITLE.

Info

Publication number
IT1261114B
IT1261114B ITTO930857A ITTO930857A IT1261114B IT 1261114 B IT1261114 B IT 1261114B IT TO930857 A ITTO930857 A IT TO930857A IT TO930857 A ITTO930857 A IT TO930857A IT 1261114 B IT1261114 B IT 1261114B
Authority
IT
Italy
Prior art keywords
petrol
state
mixture
calculation system
engine
Prior art date
Application number
ITTO930857A
Other languages
Italian (it)
Inventor
Luca Biagini
Gabriele Serra
Original Assignee
Weber Srl
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 Weber Srl filed Critical Weber Srl
Publication of ITTO930857A0 publication Critical patent/ITTO930857A0/en
Priority to ITTO930857A priority Critical patent/IT1261114B/en
Priority to DE69427199T priority patent/DE69427199T2/en
Priority to ES94117678T priority patent/ES2125389T3/en
Priority to EP94117678A priority patent/EP0657637B1/en
Priority to DE69430017T priority patent/DE69430017T2/en
Priority to ES98105228T priority patent/ES2172836T3/en
Priority to ES98105227T priority patent/ES2158630T3/en
Priority to DE69413784T priority patent/DE69413784T2/en
Priority to EP98105228A priority patent/EP0855498B1/en
Priority to EP98105227A priority patent/EP0856653B1/en
Priority to BR9404572A priority patent/BR9404572A/en
Publication of ITTO930857A1 publication Critical patent/ITTO930857A1/en
Application granted granted Critical
Publication of IT1261114B publication Critical patent/IT1261114B/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1493—Details
    • F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
    • F02D41/1474—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method by detecting the commutation time of the sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/1479—Using a comparator with variable reference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/148—Using a plurality of comparators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2454—Learning of the air-fuel ratio control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2474—Characteristics of sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

Sistema per il calcolo del titolo miscela in cui una centralina elettronica (7) è atta a confrontare la tensione generata da sensori di gas di scarico, in particolare da una sonda lambda (19) disposta nel collettore di scarico (21) di un motore a benzina (4), con un valore di soglia (Str) al fine di discriminare un primo ed un secondo stato (stato ricco/stato magro), corrispondenti ad una miscela aria/benzina alimentata al motore che presenta rispettivamente più o meno benzina di quanto richiesto dal rapporto stechiometrico. Il sistema permette l'aggiornamento periodico della soglia.[Fig. 1].System for calculating the mixture title in which an electronic control unit (7) is able to compare the voltage generated by exhaust gas sensors, in particular by a lambda probe (19) arranged in the exhaust manifold (21) of an engine petrol (4), with a threshold value (Str) in order to discriminate a first and a second state (rich state / lean state), corresponding to an air / petrol mixture fed to the engine which has respectively more or less petrol than required by the stoichiometric ratio. The system allows the periodic updating of the threshold. [Fig. 1].

ITTO930857A 1993-11-12 1993-11-12 ELECTRONIC CALCULATION SYSTEM OF THE MIXTURE TITLE. IT1261114B (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
ITTO930857A IT1261114B (en) 1993-11-12 1993-11-12 ELECTRONIC CALCULATION SYSTEM OF THE MIXTURE TITLE.
ES98105227T ES2158630T3 (en) 1993-11-12 1994-11-09 ELECTRONIC SYSTEM TO CALCULATE THE MIXING WEALTH.
ES94117678T ES2125389T3 (en) 1993-11-12 1994-11-09 ELECTRONIC SYSTEM TO CALCULATE THE FUEL MIXING RATIO FOR AN INTERNAL COMBUSTION ENGINE.
EP94117678A EP0657637B1 (en) 1993-11-12 1994-11-09 Electronic system for calculating fuel mixture ratio for an internal combustion engine
DE69430017T DE69430017T2 (en) 1993-11-12 1994-11-09 Electronic mixture composition calculation system
ES98105228T ES2172836T3 (en) 1993-11-12 1994-11-09 ELECTRONIC SYSTEM TO CALCULATE MIXING WEALTH.
DE69427199T DE69427199T2 (en) 1993-11-12 1994-11-09 Electronic mixture composition calculation system
DE69413784T DE69413784T2 (en) 1993-11-12 1994-11-09 Electronic system for calculating the air-fuel ratio of an internal combustion engine
EP98105228A EP0855498B1 (en) 1993-11-12 1994-11-09 Electronic system for calculating mixture strength
EP98105227A EP0856653B1 (en) 1993-11-12 1994-11-09 Electronic system for calculating mixture strength
BR9404572A BR9404572A (en) 1993-11-12 1994-11-10 Electronic system for calculating the title of the mixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO930857A IT1261114B (en) 1993-11-12 1993-11-12 ELECTRONIC CALCULATION SYSTEM OF THE MIXTURE TITLE.

Publications (3)

Publication Number Publication Date
ITTO930857A0 ITTO930857A0 (en) 1993-11-12
ITTO930857A1 ITTO930857A1 (en) 1995-05-12
IT1261114B true IT1261114B (en) 1996-05-09

Family

ID=11411876

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO930857A IT1261114B (en) 1993-11-12 1993-11-12 ELECTRONIC CALCULATION SYSTEM OF THE MIXTURE TITLE.

Country Status (5)

Country Link
EP (3) EP0855498B1 (en)
BR (1) BR9404572A (en)
DE (3) DE69427199T2 (en)
ES (3) ES2158630T3 (en)
IT (1) IT1261114B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1285311B1 (en) * 1996-03-12 1998-06-03 Magneti Marelli Spa METHOD OF DIAGNOSING THE EFFICIENCY OF AN EXHAUST GAS STOICHIOMETRIC COMPOSITION SENSOR PLACED DOWNSTREAM OF A CONVERTER
US6112731A (en) * 1998-12-21 2000-09-05 Ford Global Technologies, Inc. Engine diagnostic method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS608328B2 (en) * 1979-05-31 1985-03-02 日産自動車株式会社 Air-fuel ratio feedback control device
JPS5713245A (en) * 1980-06-30 1982-01-23 Toyota Motor Corp Method of controlling air fuel ratio of internal combustion engine
JPS5751936A (en) * 1980-09-12 1982-03-27 Hitachi Ltd Controlling and trouble discrimination initializing timing setting system for engine controller
US4491921A (en) * 1980-12-23 1985-01-01 Toyota Jidosha Kogyo Kabushiki Kaisha Method and apparatus for controlling the air fuel ratio in an internal combustion engine
JPS5830446A (en) * 1981-08-13 1983-02-22 Honda Motor Co Ltd Trouble detection device of air-fuel ratio feed-back control unit for internal combustion engine
JPS58222939A (en) * 1982-05-28 1983-12-24 Honda Motor Co Ltd Method of controlling air fuel ratio of internal combustion engine in trouble of oxygen concentration detecting system
JPH0733790B2 (en) * 1985-12-11 1995-04-12 富士重工業株式会社 Air-fuel ratio controller for automobile engine
JP2564510B2 (en) * 1985-12-25 1996-12-18 本田技研工業株式会社 Abnormality detection method for exhaust gas concentration sensor of internal combustion engine
FR2592685B1 (en) * 1986-01-06 1989-12-29 Renault FUEL DOSING METHOD FOR ELECTRONIC INJECTION INTERNAL COMBUSTION ENGINE.
JPH03134240A (en) * 1989-10-18 1991-06-07 Japan Electron Control Syst Co Ltd Air-fuel ratio feedback controller of internal combustion engine

Also Published As

Publication number Publication date
EP0856653A3 (en) 1998-08-26
EP0855498A2 (en) 1998-07-29
ITTO930857A0 (en) 1993-11-12
EP0657637A3 (en) 1995-10-11
DE69413784D1 (en) 1998-11-12
ITTO930857A1 (en) 1995-05-12
BR9404572A (en) 1995-10-24
EP0855498B1 (en) 2002-02-27
EP0855498A3 (en) 1998-08-26
ES2172836T3 (en) 2002-10-01
DE69427199T2 (en) 2001-10-18
DE69413784T2 (en) 1999-02-25
EP0657637B1 (en) 1998-10-07
DE69430017D1 (en) 2002-04-04
ES2125389T3 (en) 1999-03-01
EP0856653B1 (en) 2001-05-09
EP0657637A2 (en) 1995-06-14
ES2158630T3 (en) 2001-09-01
DE69427199D1 (en) 2001-06-13
EP0856653A2 (en) 1998-08-05
DE69430017T2 (en) 2002-08-14

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971127