EP0190429A1 - Dispositif pour l'indication électronique de défauts, notamment d'une électronique de moteur d'automobiles - Google Patents

Dispositif pour l'indication électronique de défauts, notamment d'une électronique de moteur d'automobiles Download PDF

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Publication number
EP0190429A1
EP0190429A1 EP85115373A EP85115373A EP0190429A1 EP 0190429 A1 EP0190429 A1 EP 0190429A1 EP 85115373 A EP85115373 A EP 85115373A EP 85115373 A EP85115373 A EP 85115373A EP 0190429 A1 EP0190429 A1 EP 0190429A1
Authority
EP
European Patent Office
Prior art keywords
error
board computer
display
signals
fault
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Withdrawn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
EP85115373A
Other languages
German (de)
English (en)
Inventor
Wolfgang Reisch
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0190429A1 publication Critical patent/EP0190429A1/fr
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C5/00Registering or indicating the working of vehicles
    • G07C5/08Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0808Diagnosing performance data

Definitions

  • the invention relates to a device for the electronic display of faults, in particular motor electronics in motor vehicles according to the preamble of claim 1.
  • a microcomputer for electronic error display, it is already known to design a microcomputer in motor electronics so that it can check its input and output signals itself and determine deviations from the setpoints.
  • the detected errors can be stored and switching measures can be initiated to reduce the damaging consequences of these errors, for example by emergency operation.
  • the detected errors can also be displayed, for which light-emitting diodes are available, of which one can be switched on for a specific error. This would mean that the errors are coded in a (1 out of n) code, where n is the number of light-emitting diodes is.
  • the present invention is therefore based on the object of designing a device of the type mentioned at the beginning for electronic error display in such a way that, without separate measuring devices and diagnostic computers, which can be arbitrarily connected in workshops to vehicles to be tested, a large number of errors are recognized and with relative little elaborate display means can be displayed.
  • the display part of the on-board computer is used for error display, which is usually designed as an alphanumeric display and consequently allows a large number of differentiated errors to be displayed without great effort.
  • error display can be distinguished from the operating data display by assigning numbers to the errors that are not considered as operating data, for example an error display of 30,000 if the speed is the operating date. It also offers stimulated operation date for the error display the consumption in liters per hour is preferred.
  • the error signals are transmitted in the same way as the operating signals from the engine electronics to the on-board computer, for example as a pulse sequence that is to be counted and displayed in the on-board computer.
  • the consumption quantity to be displayed is proportional to the number of pulses in the pulse train or another modulation content of the signal transmitted from the engine electronics to the on-board computer.
  • the device according to the invention is characterized by a particularly low additional outlay, since on the one hand the generation of the simulated operating signals indicating the faults can be carried out at least partially with the microcomputer (s) already provided in the engine electronics, and on the other hand because the on-board computer for fault display in can be used essentially unchanged.
  • such errors can also be determined and displayed in a workshop that can only be determined during the journey, for example by checking the plausibility of the values given by the sensors.
  • the error signals or the coded error numbers are thus determined while the vehicle is traveling and stored in the error memory, from which they can also be read out in the state, in particular in a workshop. This means that even smaller, economically less efficient workshops can largely check a vehicle's electronic fault display.
  • manipulated variables are formed on the basis of the sensor signals, which lead to actuators at a connection 6, for example a bypass for idle speed control.
  • a connection 6a leads via a line to an on-board computer 7.
  • the on-board computer 7 essentially consists of an alphanumeric display 8 and an operating part 9, which is of no interest here and which is used to activate one of several possible displays.
  • normal operating signals are formed as pulse sequences which are evaluated in the on-board computer to which they are transmitted, i.e. counted and shown in the alphanumeric display 8.
  • the correct operation of the operating signal and manipulated variable generator 5 and the sensors 1 to 4, in particular the power outputs for forming manipulated variables, is checked with a circuit arrangement 11 for error detection, which works in the usual way on the basis of plausibility criteria. These can usually be determined while the vehicle is traveling, in which the engine electronics 10 and the on-board computer 7 are installed.
  • the circuit arrangement for error detection is fed, in addition to sensors 1 to 4, from an output of the operating signal and manipulated variable generator 5 via a connection 12.
  • the error signal detected by the circuit arrangement 11 is fed to a downstream error encoder 13, which codes an error number from the error signal, which is either stored in the error encoder itself or, according to the exemplary embodiment shown, in the error memory 14.
  • the stored coded error can also be represented by the on-board computer 7, specifically with the display 8.
  • the coded number of errors is converted with a converter 15 into simulated operating signals which can be easily processed and displayed by the on-board computer 7.
  • the simulated operating signals are transmitted from the converter to the on-board computer 7 in the switching position of a switching device 16 shown in the drawing.
  • Such a transmission is preferably carried out while the vehicle is stationary, the errors displayed being able to be read at rest and, for example, decrypted with a list.
  • the switchover device is brought into the switch position (not shown), as a result of which the operating signals emitted by the operating signal and manipulated variable images 5, for example the current fuel flow, are transmitted to the on-board computer 7 via the switching device 16 and are displayed there converted to liters per 100 km can.
  • Switching the switching device 16 between normal operation, i.e. Driving operation, and display of the operating signals on the one hand or diagnosis, i.e. Error display of the coded numbers stored in the error memory, on the other hand, is carried out by manual actuation of a switch 17, which - as indicated by the broken line - acts on the switching device 16.
  • the engine electronics 10 can detect a fault in the air quantity sensor 1 and encoded by the error encoder 13 into the error memory 14 encodes a number indicative of the error.
  • This number can correspond, for example, to a consumption display of 10.1 liters per km.
  • the number stored in the error memory 14 is converted into an operating signal by the converter 15, which is then displayed in the on-board computer 7 again as a current consumption display of 10.1 liters per hour.
  • the display part 8 has too few digits to display all errors with an individual number, it is also possible to convert the coded number of errors sequentially and to transmit them to the on-board computer. Then, for example, the identification of a certain error appears as a result of two numbers of 3 digits each in the display part 8.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Instrument Panels (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Testing Of Engines (AREA)
EP85115373A 1985-01-09 1985-12-04 Dispositif pour l'indication électronique de défauts, notamment d'une électronique de moteur d'automobiles Withdrawn EP0190429A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853500440 DE3500440A1 (de) 1985-01-09 1985-01-09 Einrichtung zur elektronischen fehleranzeige, insbesondere einer motorelektronik in kraftfahrzeugen
DE3500440 1985-01-09

Publications (1)

Publication Number Publication Date
EP0190429A1 true EP0190429A1 (fr) 1986-08-13

Family

ID=6259449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115373A Withdrawn EP0190429A1 (fr) 1985-01-09 1985-12-04 Dispositif pour l'indication électronique de défauts, notamment d'une électronique de moteur d'automobiles

Country Status (3)

Country Link
EP (1) EP0190429A1 (fr)
JP (1) JPS62282236A (fr)
DE (1) DE3500440A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3731109A1 (de) * 1987-09-16 1989-03-30 Bosch Gmbh Robert Verfahren und einrichtung zur meldung von fehlerzustaenden in einem kraftfahrzeug
EP1923255A1 (fr) * 2006-11-17 2008-05-21 Honda Motor Co., Ltd Procédé d'indication de commutation pour transmission

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3829546C1 (fr) * 1988-08-31 1989-11-16 Voest-Alpine Automotive Ges.M.B.H., Linz, At
AU2003269725A1 (en) * 2003-10-03 2005-04-21 Snap-On Technologies, Inc. System and method for diagnosing an automotive vehicle
DE102020104868B3 (de) 2020-02-25 2021-08-05 Bayerische Motoren Werke Aktiengesellschaft Kraftstoffleitung und Fahrzeugzustandsüberwachungssystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005436A1 (fr) * 1978-05-16 1979-11-28 VDO Adolf Schindling AG Installation de surveillance avec indicateur centralisé des états de fonctionnement d'un véhicule automobile
DE2922910A1 (de) * 1979-06-06 1980-12-11 Rau Swf Autozubehoer Anzeigevorrichtung fuer fahrzeuge
GB2055214A (en) * 1979-06-28 1981-02-25 Nissan Motor Apparatus for testing a control system for automotive vehicle
EP0072000B1 (fr) * 1981-08-07 1988-10-19 Nippondenso Co., Ltd. Système pour l'établissement et l'affichage de fautes de véhicules à moteur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005436A1 (fr) * 1978-05-16 1979-11-28 VDO Adolf Schindling AG Installation de surveillance avec indicateur centralisé des états de fonctionnement d'un véhicule automobile
DE2922910A1 (de) * 1979-06-06 1980-12-11 Rau Swf Autozubehoer Anzeigevorrichtung fuer fahrzeuge
GB2055214A (en) * 1979-06-28 1981-02-25 Nissan Motor Apparatus for testing a control system for automotive vehicle
EP0072000B1 (fr) * 1981-08-07 1988-10-19 Nippondenso Co., Ltd. Système pour l'établissement et l'affichage de fautes de véhicules à moteur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3731109A1 (de) * 1987-09-16 1989-03-30 Bosch Gmbh Robert Verfahren und einrichtung zur meldung von fehlerzustaenden in einem kraftfahrzeug
EP1923255A1 (fr) * 2006-11-17 2008-05-21 Honda Motor Co., Ltd Procédé d'indication de commutation pour transmission

Also Published As

Publication number Publication date
JPS62282236A (ja) 1987-12-08
DE3500440A1 (de) 1986-07-10

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Inventor name: REISCH, WOLFGANG