EP0231155A1 - Verarbeitungssystem zur Erfassung, Steuerung und diagnostischen Prüfung des Betriebszustandes einer inneren Verbrennungsmaschine eines Motorfahrzeuges, insbesondere eines gewerblichen Motorfahrzeuges - Google Patents

Verarbeitungssystem zur Erfassung, Steuerung und diagnostischen Prüfung des Betriebszustandes einer inneren Verbrennungsmaschine eines Motorfahrzeuges, insbesondere eines gewerblichen Motorfahrzeuges Download PDF

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Publication number
EP0231155A1
EP0231155A1 EP87830016A EP87830016A EP0231155A1 EP 0231155 A1 EP0231155 A1 EP 0231155A1 EP 87830016 A EP87830016 A EP 87830016A EP 87830016 A EP87830016 A EP 87830016A EP 0231155 A1 EP0231155 A1 EP 0231155A1
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EP
European Patent Office
Prior art keywords
engine
lubricant
sensors
processing
processing system
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.)
Withdrawn
Application number
EP87830016A
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English (en)
French (fr)
Inventor
Mario Montuschi
Mario Incardona
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.)
Iveco SpA
Original Assignee
Iveco Fiat SpA
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 Iveco Fiat SpA filed Critical Iveco Fiat SpA
Publication of EP0231155A1 publication Critical patent/EP0231155A1/de
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0808—Diagnosing performance data
    • 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
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2031/00—Fail safe
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/26—Fail safe for clogging air inlet

Definitions

  • the present invention relates to processing systems and is particularly concerned with a processing system intended to be associated with the internal combustion engine of a motor vehicle such as, for example, a commercial motor vehicle.
  • the processing system comprises a plurality of sensors, each of which detects a corresponding physical magnitude indicative of the operating conditions of the engine and generates a respective detection signal, and a processing unit to which the sensors are connected and which receives the detection signals.
  • Processing systems of this type are already used now for controlling the operation of the internal combustion engines in most up-to-date production motor vehicles.
  • the present invention has the object of providing a single system which can carry out, in an integrated manner, the detection, control and diagnostic examination of the operating conditions of the internal combustion engine of a motor vehicle.
  • this object is achieved by virtue of a processing system having the characteristics indicated in Claim 1, which follows this description.
  • the processing unit of the system comprises five processing modules, each of which is connected to a respective group of sensors.
  • the first processing module controls the function of recording the "useful life" of the engine, receiving indications of anomalous or irregular operation to which the engine has been subjected.
  • the second processing module has essentially the function of identifying conditions of critical use of the engine, performing a function of automatic intervention for the limitation of such uses.
  • the third processing module performs a function of overall monitoring of the operation of the engine, particularly with a view to the processing of visible and/or acoustical signals which are given to the driver of the motor vehicle.
  • the fourth processing .module performs a function of recording, with continuous updating, the maintenance operations to be carried out on the engine of the motor vehicle.
  • the fifth processing module performs the function of "diagnosing" the operation of the engine and can hold a dialogue with a more complex processing unit, not normally installed in the motor vehicle but available at technical service centres and garages, so as to permit an automatic identification of the anomalies of the engine operation and of the maintenance and/or adjustment necessary to remedy them.
  • the subject of the present invention is the so-called "architecture" of the processing system, which can be realized, to advantage, by combining a plurality of sensors, normally already available on the market, with a processing unit constituted by a mini-computer or a microprocessor installed in the motor vehicle.
  • each of these sensors produces at its output a signal which, after a possible interfacing and conversion operation,appears in the form of an electric signal which can be read and interpreted by the processing unit.
  • the processing unit is arranged as a plurality of processing modules. It is stressed that these processing modules can be made either in the form of physically distinct circuit blocks, or - in a more advantageous embodiment - in the form of functional blocks defined within a single processing structure. In this connection it is stressed that - as will be better seen below - one sensor may also be connected to several processing modules.
  • an internal combustion engine such as, for example, the compression ignition engine mounted or, at any rate, intended to be mounted in a commercial motor vehicle, is generally indicated M.
  • the supercharging compressor (of the turbine or lobe type) which may be mounted on the engine M is indicated C.
  • An actuator (central control) of electro-mechanical type for controlling the feed to the engine M' is generally indicated F.
  • the central control F is able to control the flow of fuel to the engine M from a tank T and of the air flowing to the external environment through an air filter A.
  • the actuator F may be of the type already currently in use on a motor vehicle to enable the feed to the engine to be controlled as a function of commands given by the driver, for example, through the accelerator pedal G, integrated so as also to be able to perform the same function in dependence on the signals output by some sensors also connected to the modules of the processing system of the invention, generally indicated 1.
  • the processing system 1 comprises, as essential parts, a plurality of sensors, generally indicated 2, and a processing unit 3 with which the sensors are associated.
  • a permanent or semi-permanent memory 4 and a display unit 5 for presenting messages to the driver of the motor vehicle are associated with the processing unit 3, which is usually in the form of a mini-computer or a microprocessor.
  • An interface unit indicated 6, is adapted to communicate, through an optical fibre transmission system 7 and/or a cable transmission system 8, with a further'processing unit P which may be on the vehicle or made available at technical service centres and/or garages.
  • the processing unit is arranged in five processing modules, indicated by the progressive reference numerals 91 to 95.
  • Each processing module 91-95 is connected to a respective group of sensors on the basis of the criteria which will be described below.
  • the central control F is connected to one or more sensors selected from the group constituted by the following sensors:
  • a sensor of the air pressure downstream of compressor C is also connected to the central control F.
  • the central control F receives the signals generated by the sensors connected to it and provides - according to known criteria - for the carrying out of operations aimed at continuously maintaining optimum operating conditions of the engine M, particularly by regulating the fuel supply flow in the engine so as to optimize consumption and limit the emission of polluting compounds at the exhaust of the engine.
  • the regulating action permits the fuel supply to be adjusted in such a manner as to compensate for the variations of the external ambient pressure which occur upon variations of the altitude of the vehicle in which the engine is fitted.
  • the central control F sends the data corresponding to the signals generated by the sensors connected therewith to the modules of the unit 3, for example along a series-type connection line.
  • thermoresistors to detect medium-level temperatures.
  • sensors constituted by thermocouples For the detection of high temperatures, such as those of the exhaust gases, however, it is considered preferable to select sensors constituted by thermocouples.
  • the Applicant presently regards as optimum the performance of ceramic extensometers (strain gauges).
  • strain gauges To detect the position or speed of moving parts (shafts, pistons) use may be made of electro-magnetic detectors, Hall-effect sensors, or (if it is desired to obtain positional data of particular accuracy and slow dynamics) sealed plastics-film potentiometers or induction-type sensors.
  • first processing module 91 is substantially that of supplying a record (which may be stored advantageously in the memory 4) of the "life" of the engine with an indication of the abnormal or irregular operating conditions (operational stress) to which the engine has been unduly subjected.
  • the first processing module 91 is connected to sensors selected from the group constituted by the following sensors:
  • this is the fuel level sensor whose signal is integrated with time by the processing nucleus.
  • This is a very valuable indicator for an appraisal of the age of the engine, and is presently regarded as the preferable one (in terms of ease of procurement) with respect to that supplied by the integral of speed of rotation of the integral of the power demanded of the engine, obtained from the speed of rotation of the engine or other operating parameters thereof.
  • the second processing module 92 is connected to sensors selected from the group constituted by the following sensors:
  • the second processing module 92 is designed in such a manner as to process, from the detection signals supplied by the sensors connected thereto, a control signal which is transmitted to the central control F in order to cut-off, at least in part, the supply of fuel to the engine M so as automatically to bring the engine down to lower speeds of operation. If the central control F is not present, this signal is used only to supply a warning signal to the driver.
  • the third processing module 93 is intended to perform the function of monitoring the general operating conditions of the engine and displaying corresponding visual (and possibly acoustic) signals on the unit 5.
  • the driver of the motor vehicle (and also the inspector who tests a vehicle just produced or a vehicle brought in only for maintenance or repairs) can perform a complete picture of the operating conditions of the engine.
  • sensors selected from the group constituted by the following sensors may be connected to the third processing module 93;
  • the fourth processing module 94 has the object of preventing the need to have recourse, as far as possible, to forms of programmed maintenance of the engine M.
  • the fourth processing module 94 identifies, by the emission of a corresponding signal (for example, by means of the display unit 5 ), the occurrence of situations which require the carrying out of a maintenance operation. In this way, it is possible to avoid the need to carry out such operations at fixed times as a precautionary measure with the risk of carrying out, from time to time, overhauls which were not necessary at that'moment.
  • the sensors connected to the fourth processing module 94 are chosen from the group constituted by the following sensors:
  • the sensing devices connected to the fifth processing module 95 are chosen from the group constituted by the following sensors:
  • the fifth processing module 95 has essentially the object of receiving the detection signals generated by the sensors, storing and processing them, and supplying warning signals to the driver. At the time of the final adjustment of the engine in the workshop, the processing module transmits the signals received from the sensors and pre-processed to the processing unit P by means of the interface 6 and the physical connection vectors 7 and/or 8.
  • the processing unit P On the basis of these signals, and perhaps other signals supplied by the other processing modules of the unit 3, the processing unit P is able to carry out an exhaustive analysis of the present condition and previous conditions of operation of.-the engine, supplying to technicians precise and detailed indications of the maintenance and repairs to be carried out.
  • the reference conditions for determining the need for repairs following a malfunction relate to the individual engine and may be stored in the memory 4 or in the central memory of the processing unit P and may accompany the engine in the form of a magnetic card.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Testing Of Engines (AREA)
EP87830016A 1986-01-23 1987-01-19 Verarbeitungssystem zur Erfassung, Steuerung und diagnostischen Prüfung des Betriebszustandes einer inneren Verbrennungsmaschine eines Motorfahrzeuges, insbesondere eines gewerblichen Motorfahrzeuges Withdrawn EP0231155A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT67052/86A IT1187870B (it) 1986-01-23 1986-01-23 Sistema elaborativo per la rilevazione il controllo e l esame diagnostico delle condizioni di funzionamento del motore a combustione in terna di un autoveicolo particolarmente di un autoveicolo industriale
IT6705286 1986-01-23

Publications (1)

Publication Number Publication Date
EP0231155A1 true EP0231155A1 (de) 1987-08-05

Family

ID=11299202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87830016A Withdrawn EP0231155A1 (de) 1986-01-23 1987-01-19 Verarbeitungssystem zur Erfassung, Steuerung und diagnostischen Prüfung des Betriebszustandes einer inneren Verbrennungsmaschine eines Motorfahrzeuges, insbesondere eines gewerblichen Motorfahrzeuges

Country Status (3)

Country Link
EP (1) EP0231155A1 (de)
JP (1) JPS62210244A (de)
IT (1) IT1187870B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988009976A1 (en) * 1987-06-02 1988-12-15 Christoph Breit Device for protecting the systems and load of motor vehicles
EP0489261A2 (de) * 1990-12-06 1992-06-10 MAN Nutzfahrzeuge Aktiengesellschaft Vorrichtung zur Berechnung eines Kraftfahrzeug-Wartungsintervalles
WO1993012332A1 (en) * 1991-12-19 1993-06-24 Caterpillar Inc. Method for diagnosing an engine using computer based models
WO1993013340A1 (en) * 1991-12-23 1993-07-08 Caterpillar Inc. Vehicle diagnostic control system
WO1996013657A1 (de) * 1994-10-29 1996-05-09 Robert Bosch Gmbh Verfahren und vorrichtung zur steuerung der antriebseinheit eines fahrzeugs
US5585553A (en) * 1995-07-28 1996-12-17 Caterpillar Inc. Apparatus and method for diagnosing an engine using a boost pressure model
US5604306A (en) * 1995-07-28 1997-02-18 Caterpillar Inc. Apparatus and method for detecting a plugged air filter on an engine
US5646341A (en) * 1995-07-28 1997-07-08 Caterpillar Inc. Apparatus and method for diagnosing an engine using an oil pressure model
DE19610483A1 (de) * 1996-03-16 1997-09-18 Wagner Foerdertechnik Betriebsdatenerfassungsgerät für ein Flurförderzeug
FR2770917A1 (fr) * 1997-11-07 1999-05-14 Peugeot Systeme de controle du fonctionnement d'un calculateur de pilotage d'organes fonctionnels d'un vehicule automobile
ES2147511A1 (es) * 1998-06-12 2000-09-01 Avia Ingenieria Y Diseno S L Dispositivo indicador de periodos de mantenimiento a traves del indicador de nivel del deposito.
DE10215865A1 (de) * 2002-04-11 2003-11-06 Bosch Gmbh Robert Verfahren und Steuergerät zur Ermittlung der Ausfallwahrscheinlichkeit einer Kraftfahrzeugkomponente
GB2390690B (en) * 2001-03-29 2005-06-22 Royal Mail Group Plc Improvements in monitoring systems
CN112459861A (zh) * 2020-12-21 2021-03-09 潍柴动力股份有限公司 离心式机油滤清器滤芯开裂故障检测方法及相关产品
CN114607493A (zh) * 2022-03-16 2022-06-10 潍柴动力股份有限公司 一种加速驻车再生的方法、装置、发动机和存储介质

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053868A (en) * 1976-12-27 1977-10-11 Caterpillar Tractor Co. Vehicle system monitor
WO1982001354A1 (en) * 1980-10-15 1982-04-29 Ferguson Services Nv Massey Electronic control of agricultural vehicles
US4344136A (en) * 1979-06-22 1982-08-10 Daimler-Benz Aktiengesellschaft Device for indication of operational and computed values
GB2104247A (en) * 1981-07-13 1983-03-02 Nissan Motor Automatic control of i c engines in vehicles
GB2125578A (en) * 1982-08-16 1984-03-07 Nissan Motor Self monitoring system
GB2130752A (en) * 1982-10-01 1984-06-06 Fuji Heavy Ind Ltd Diagnostic system for an internal combustion engine
US4475498A (en) * 1983-12-15 1984-10-09 Hurner Erwin E Engine detecting device
FR2546975A1 (fr) * 1983-06-03 1984-12-07 Mitsubishi Electric Corp Dispositif pour supprimer le cognement dans les moteurs a combustion interne
EP0127789A2 (de) * 1983-05-27 1984-12-12 AlliedSignal Inc. Steuereinrichtung für eine Brennkraftmaschine mit Multiprozessoren
EP0072000B1 (de) * 1981-08-07 1988-10-19 Nippondenso Co., Ltd. System zur Fehlererkennung und -anzeige für Motorfahrzeuge

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4053868A (en) * 1976-12-27 1977-10-11 Caterpillar Tractor Co. Vehicle system monitor
US4344136A (en) * 1979-06-22 1982-08-10 Daimler-Benz Aktiengesellschaft Device for indication of operational and computed values
WO1982001354A1 (en) * 1980-10-15 1982-04-29 Ferguson Services Nv Massey Electronic control of agricultural vehicles
GB2104247A (en) * 1981-07-13 1983-03-02 Nissan Motor Automatic control of i c engines in vehicles
EP0072000B1 (de) * 1981-08-07 1988-10-19 Nippondenso Co., Ltd. System zur Fehlererkennung und -anzeige für Motorfahrzeuge
GB2125578A (en) * 1982-08-16 1984-03-07 Nissan Motor Self monitoring system
GB2130752A (en) * 1982-10-01 1984-06-06 Fuji Heavy Ind Ltd Diagnostic system for an internal combustion engine
EP0127789A2 (de) * 1983-05-27 1984-12-12 AlliedSignal Inc. Steuereinrichtung für eine Brennkraftmaschine mit Multiprozessoren
FR2546975A1 (fr) * 1983-06-03 1984-12-07 Mitsubishi Electric Corp Dispositif pour supprimer le cognement dans les moteurs a combustion interne
US4475498A (en) * 1983-12-15 1984-10-09 Hurner Erwin E Engine detecting device

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* Cited by examiner, † Cited by third party
Title
IEEE SPECTRUM, vol. 12, no. 6, June 1975, pages 73-77; R.K. JURGE: "The microprocessor: in the driver's seat ?" *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5081443A (en) * 1987-06-02 1992-01-14 Christoph Breit Device for protecting the systems and load of motor vehicles
WO1988009976A1 (en) * 1987-06-02 1988-12-15 Christoph Breit Device for protecting the systems and load of motor vehicles
EP0489261A2 (de) * 1990-12-06 1992-06-10 MAN Nutzfahrzeuge Aktiengesellschaft Vorrichtung zur Berechnung eines Kraftfahrzeug-Wartungsintervalles
EP0489261A3 (en) * 1990-12-06 1992-10-21 Man Nutzfahrzeuge Aktiengesellschaft Device for calculating motor vehicle maintenance interval
WO1993012332A1 (en) * 1991-12-19 1993-06-24 Caterpillar Inc. Method for diagnosing an engine using computer based models
FR2685515A1 (fr) * 1991-12-19 1993-06-25 Caterpillar Inc Procede pour etablir le diagnostic d'un moteur a l'aide de modeles geres par ordinateur.
US5377112A (en) * 1991-12-19 1994-12-27 Caterpillar Inc. Method for diagnosing an engine using computer based models
WO1993013340A1 (en) * 1991-12-23 1993-07-08 Caterpillar Inc. Vehicle diagnostic control system
US5315972A (en) * 1991-12-23 1994-05-31 Caterpiller Inc. Vehicle diagnostic control system
US5880568A (en) * 1994-10-29 1999-03-09 Robert Bosch Gmbh Method and arrangement for controlling the drive unit of a vehicle
WO1996013657A1 (de) * 1994-10-29 1996-05-09 Robert Bosch Gmbh Verfahren und vorrichtung zur steuerung der antriebseinheit eines fahrzeugs
US5585553A (en) * 1995-07-28 1996-12-17 Caterpillar Inc. Apparatus and method for diagnosing an engine using a boost pressure model
US5646341A (en) * 1995-07-28 1997-07-08 Caterpillar Inc. Apparatus and method for diagnosing an engine using an oil pressure model
US5604306A (en) * 1995-07-28 1997-02-18 Caterpillar Inc. Apparatus and method for detecting a plugged air filter on an engine
DE19610483A1 (de) * 1996-03-16 1997-09-18 Wagner Foerdertechnik Betriebsdatenerfassungsgerät für ein Flurförderzeug
FR2770917A1 (fr) * 1997-11-07 1999-05-14 Peugeot Systeme de controle du fonctionnement d'un calculateur de pilotage d'organes fonctionnels d'un vehicule automobile
ES2147511A1 (es) * 1998-06-12 2000-09-01 Avia Ingenieria Y Diseno S L Dispositivo indicador de periodos de mantenimiento a traves del indicador de nivel del deposito.
GB2390690B (en) * 2001-03-29 2005-06-22 Royal Mail Group Plc Improvements in monitoring systems
DE10215865A1 (de) * 2002-04-11 2003-11-06 Bosch Gmbh Robert Verfahren und Steuergerät zur Ermittlung der Ausfallwahrscheinlichkeit einer Kraftfahrzeugkomponente
US6873917B2 (en) 2002-04-11 2005-03-29 Robert Bosch Gmbh Method and control unit for determining the probability of failure of a motor-vehicle component
CN112459861A (zh) * 2020-12-21 2021-03-09 潍柴动力股份有限公司 离心式机油滤清器滤芯开裂故障检测方法及相关产品
CN114607493A (zh) * 2022-03-16 2022-06-10 潍柴动力股份有限公司 一种加速驻车再生的方法、装置、发动机和存储介质

Also Published As

Publication number Publication date
JPS62210244A (ja) 1987-09-16
IT8667052A0 (it) 1986-01-23
IT1187870B (it) 1987-12-23

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