EP0389775B1 - Circuit pour la surveillance de la haute tension dans une installation d'allumage - Google Patents

Circuit pour la surveillance de la haute tension dans une installation d'allumage Download PDF

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Publication number
EP0389775B1
EP0389775B1 EP90102944A EP90102944A EP0389775B1 EP 0389775 B1 EP0389775 B1 EP 0389775B1 EP 90102944 A EP90102944 A EP 90102944A EP 90102944 A EP90102944 A EP 90102944A EP 0389775 B1 EP0389775 B1 EP 0389775B1
Authority
EP
European Patent Office
Prior art keywords
voltage
circuit
test voltage
primary current
primary
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.)
Expired - Lifetime
Application number
EP90102944A
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German (de)
English (en)
Other versions
EP0389775A3 (fr
EP0389775A2 (fr
Inventor
Karl-Heinz Kugler
Christian Dipl.-Ing. Zimmermann
Hans Dipl.-Ing. Köhnle
Ernst Kaller
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0389775A2 publication Critical patent/EP0389775A2/fr
Publication of EP0389775A3 publication Critical patent/EP0389775A3/fr
Application granted granted Critical
Publication of EP0389775B1 publication Critical patent/EP0389775B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current

Definitions

  • the invention relates to a circuit arrangement for monitoring a high-voltage ignition system of an internal combustion engine of a motor vehicle or the like according to the preamble of the main claim.
  • a circuit arrangement is already known from JP-A-60-19 962, in which the primary current of the ignition coil is detected with the aid of a measuring resistor and converted into a corresponding test voltage. This test voltage is compared to a reference value and a misfire in the ignition system is recognized.
  • the circuit arrangement according to the invention with the features of the main claim has the advantage over the fact that faults in the high-voltage ignition system are detected by shunts and / or short circuits in the secondary winding of the ignition coil, the ignition harness or the spark plugs, so that remedial measures can be taken in good time. Accordingly, a catalyst protection function can be implemented with the use of the circuit arrangement according to the invention.
  • the test voltage corresponding to the primary current of the ignition coil when compared with the supply voltage of the high-voltage ignition system, allows a statement to be made about the state of the system.
  • the measuring arrangement in the primary circuit Ignition coil lying shunt is a measure of the primary current that occurs during an ignition process.
  • a filter circuit which is formed from a series connection of a resistor and a capacitor, is connected in parallel with the shunt.
  • the capacitor voltage forms the test voltage used to monitor the ignition system.
  • the comparison of the test voltage with the supply voltage ensures that primary current changes caused by changes in supply voltage do not lead to an error message.
  • the level of the supply voltage depends, for example, on the state of charge of the battery of the motor vehicle and also on the setting of the controller.
  • a particularly simple measurement value evaluation is possible by means of a comparator of the evaluation circuit, to which the test voltage and the supply voltage are supplied. If the test voltage in relation to the supply voltage exceeds a certain value, there is a secondary or short-circuit fault in the high-voltage ignition system.
  • the evaluation circuit for the voltage comparison preferably forms a reference value corresponding to the supply voltage.
  • the level of the test voltage is compared to the size of the reference value. If the battery voltage is assumed, one becomes the battery voltage reference value of the motor vehicle used for the monitoring.
  • a further development of the invention is characterized in that the evaluation circuit uses at least one instantaneous value of the test voltage for the voltage comparison. Accordingly, in order to form the instantaneous value, the voltage rise of the test voltage is sampled at a correspondingly selected point in time.
  • the temporal position of the instantaneous value in relation to the duration of a primary current pulse is preferably in the first, earlier half of the primary current pulse, since errors caused by shunts and / or short circuits are particularly noticeable in the first half of the test voltage rise corresponding to the primary current profile.
  • the area representative of the fault detection can vary within the length of a primary current pulse, so that the temporal position of the instantaneous value of the test voltage with respect to the duration of a primary current pulse depends on the respective used ignition system is determined.
  • Monitoring is particularly simplified if the evaluation circuit issues the error message when the instantaneous value is larger than the reference value. Monitoring can be carried out in a simple manner using a comparator.
  • FIG. 1 shows a circuit arrangement for monitoring a high-voltage ignition system of an internal combustion engine a motor vehicle or the like. Monitoring takes place with regard to secondary and / or short circuits on the secondary side 1 of an ignition coil 2.
  • the primary winding 3 of the ignition coil 2 is connected at one end 4 to a supply voltage U V.
  • the supply voltage U V can be the battery voltage of the motor vehicle.
  • the other end 5 of the primary winding 3 is connected to an interrupter 6 which is connected to ground 8 via a shunt 7.
  • the other pole of the supply voltage U V is connected to ground 8; this is preferably the chassis of the motor vehicle.
  • the interrupter 6 is designed as a transistor T. Its base is controlled by a control circuit, not shown, of a control unit of the high-voltage ignition system; its collector-emitter path is connected to the primary circuit of the primary winding 3.
  • a filter circuit 9 Parallel to the shunt 7 is a filter circuit 9, which consists of a series connection of a resistor R and a capacitor C.
  • the capacitor voltage U C applied to the capacitor forms a test voltage U Pr .
  • the test voltage U Pr is fed to an evaluation circuit 10.
  • the shunt 7 forms, together with the resistor R and the capacitor C, a measuring arrangement 11, which by the converts the primary winding 3 of the ignition coil 2 flowing primary current i into a corresponding test voltage U Pr .
  • the measuring arrangement 11 is also supplied with the supply voltage U V or the battery voltage of the motor vehicle. It forms a reference value U R corresponding to the supply voltage U V or battery voltage.
  • the secondary winding 12 of the ignition coil 2 is connected with its high-voltage connection 13 to an electrode 14 of a spark plug 15.
  • the other electrode 16 is connected to ground 8.
  • FIG. 1 Faults that occur due to shunts and / or short circuits in the secondary winding 12, the spark plug (feed to the spark plug and the like) and / or the spark plug 15 can — according to FIG. 1 — be represented and detected by a shunt resistor R N. Secondary-side shunts and / or short-circuits lead to a reduction in the effective primary inductance L 1 through the coupling of the secondary and primary sides of the ignition coil 2. This is clear from FIG. 2, which shows the equivalent circuit diagram of the ignition coil 2. This consists of the effective resistance R1 of the primary side, which is in series with a leakage inductance L S1 .
  • FIGS. 3 to 6 show the time profile of the test voltage U Pr corresponding to a primary current pulse for shunt resistances R N of different sizes.
  • FIG. 3 relates to a fault-free high-voltage ignition system, ie the shunt resistance R N is infinite.
  • the shunt resistance R N has the value 500 k ⁇ .
  • the shunt resistance value in FIG. 5 is 100 k ⁇ , and FIG. 6 relates to the short circuit case, ie the shunt resistance R N has the value O.
  • FIGS. 3 to 6 show that the course of the test voltage U Pr depends on the size of the shunt resistor R N. For the times t1 to t6 entered as examples in the figures mentioned, there are largely correspondingly different values.
  • the measured value table in FIG. 7 provides an overview of this.
  • the test voltage value U Pr present at the respective time t 1 to t auf is shown to the maximum test voltage value U Pr max (U Pr at time t 6).
  • the ratio is given in percentages for an infinite, 500 k ⁇ , 100 k ⁇ and O shunt resistance.
  • At least one instantaneous value is preferably taken from the test voltage curve by scanning at a preselectable point in time. For the reasons described above, the scanning is preferably carried out in the first, earlier half of the pulse. Since the instantaneous value of the test voltage U Pr obtained by the sampling depends on the size of the supply voltage U V or the battery voltage, the supply or battery voltage present at the time of the sampling is used as a comparison potential. If the test voltage U Pr exceeds a value dependent on the size of the supply or battery voltage, there is a secondary and / or short circuit fault on the secondary side 1 of the high-voltage ignition system, which leads to an error message being issued.
  • the evaluation circuit one of the supply or battery voltage is particularly advantageous forms the corresponding reference value, which is then used for the voltage comparison with the test voltage U Pr .
  • This voltage comparison is particularly simple to carry out using a comparator belonging to the evaluation circuit 10; there is an error if the test voltage U Pr is greater than the reference voltage U R.
  • the circuit arrangement according to the invention for monitoring the high-voltage ignition system represents a measure with regard to catalyst protection, because in the event of faults, clean combustion of the fuel is no longer guaranteed, so that the catalyst is subject to a high load in the event of a longer fault duration, which can lead to damage.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Claims (5)

  1. Circuit de surveillance de l'installation d'allumage à haute tension d'un moteur d'automobile ou analogue, basé sur les circuits de dérivation ou les courtscircuits, comprenant :
    - une liaison en série de l'enroulement primaire de la bobine d'allumage et d'un interrupteur, avec une tension d'alimentation,
    - un dispositif de mesure (11) recevant l'intensité (i) du courant primaire de la bobine (2) et la transformation en une tension de contrôle (UPr) correspondante,
    - un circuit d'exploitation comparant la tension (UPr) à une tension de référence (UR) et qui délivre, lorsque (UPr) dépasse trop (UR), un signal de défaut,
    caractérisé en ce que :
    - la tension de référence (UR) est définie en correspondance avec la tension d'alimentation (UV),
    - le circuit d'exploitation (10), pour effectuer la comparaison, utilise une valeur instantanée de la tension de contrôle (UPr), prise à un instant se situant, par rapport à la durée d'une impulsion du courant primaire ou de la tension de contrôle, dans la moitié antérieure de cette impulsion.
  2. Circuit de surveillance selon la revendication 1, caractérisé en ce que le dispositif de mesure (11) comporte un shunt (7) monté dans le circuit du courant primaire de la bobine (2).
  3. Circuit selon la revendication 2, caractérisé en ce qu'en parallèle avec le shunt (7), est monté un circuit de filtrage (9) constitué d'une résistance (R) et d'un condensateur (C) montés en série, la tension (UC) du condensateur constituant la tension de contrôle (UPr).
  4. Circuit selon une des revendications précédentes, caractérisé en ce que le circuit d'exploitation (10) comprend un comparateur qui reçoit la tension de contrôle (UPr) et la tension de référence (UR).
  5. Circuit selon une des revendications précédentes, caractérisé en ce que la position dans le temps de la valeur instantanée, par rapport à la durée d'une impulsion du courant primaire, est déterminée en fonction de la constitution de l'installation d'allumage à haute tension considérée.
EP90102944A 1989-03-25 1990-02-15 Circuit pour la surveillance de la haute tension dans une installation d'allumage Expired - Lifetime EP0389775B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3909906A DE3909906A1 (de) 1989-03-25 1989-03-25 Schaltungsanordnung zur ueberwachung einer hochspannungszuendanlage
DE3909906 1989-03-25

Publications (3)

Publication Number Publication Date
EP0389775A2 EP0389775A2 (fr) 1990-10-03
EP0389775A3 EP0389775A3 (fr) 1991-05-15
EP0389775B1 true EP0389775B1 (fr) 1995-05-31

Family

ID=6377236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102944A Expired - Lifetime EP0389775B1 (fr) 1989-03-25 1990-02-15 Circuit pour la surveillance de la haute tension dans une installation d'allumage

Country Status (4)

Country Link
US (1) US5027073A (fr)
EP (1) EP0389775B1 (fr)
DE (2) DE3909906A1 (fr)
ES (1) ES2073464T3 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155437A (en) * 1990-07-26 1992-10-13 Unison Industries Limited Partnership Diagnostic device for gas turbine ignition system
US5523691A (en) * 1990-07-26 1996-06-04 Unison Industries Limited Partnership Diagnostic device for gas turbine ignition system
DE4107335A1 (de) * 1991-03-07 1992-09-10 Beru Werk Ruprecht Gmbh Co A Verfahren und vorrichtung zur zuendueberwachung einer zuendanlage
DE4291755T1 (fr) * 1991-05-31 1993-05-13 Caterpillar Inc., Peoria, Ill., Us
US5672972A (en) * 1992-05-27 1997-09-30 Caterpillar Inc. Diagnostic system for a capacitor discharge ignition system
FR2712934B1 (fr) * 1993-11-22 1996-01-26 Marelli Autronica Procédé et dispositif d'allumage à bobine, pour moteur à allumage commandé.
JPH07217520A (ja) * 1994-01-28 1995-08-15 Ngk Spark Plug Co Ltd 燃焼状態検出装置
JP3194676B2 (ja) * 1994-11-08 2001-07-30 三菱電機株式会社 内燃機関の失火検出装置
DE19524499B4 (de) * 1995-07-05 2008-11-13 Robert Bosch Gmbh Zündanlage für eine Brennkraftmaschine
US5606118A (en) * 1995-09-05 1997-02-25 Ford Motor Company System and method for detecting misfire in an internal combustion engine
FR2768186B1 (fr) * 1997-09-11 1999-10-15 Siemens Automotive Sa Procede et dispositif de diagnostic d'un systeme d'allumage pour moteur a combustion interne
US6717412B1 (en) 1999-09-24 2004-04-06 Snap-On Technologies, Inc. Ignition signal pickup interface box
FR2885651A1 (fr) * 2005-09-15 2006-11-17 Siemens Vdo Automotive Sas Procede de commande d'un courant primaire dans un circuit inductif
CN102536583A (zh) * 2011-07-07 2012-07-04 曹杨庆 汽油机等压恒压及多因素补偿点火电路
EP3276156A1 (fr) * 2016-07-29 2018-01-31 Caterpillar Motoren GmbH & Co. KG Procédé de détermination d'un défaut dans une bougie d'allumage d'un moteur à combustion interne
RU2738210C1 (ru) * 2020-03-12 2020-12-09 Акционерное общество "Уфимское научно-производственное предприятие "Молния" Способ контроля емкостного агрегата зажигания

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629824A1 (de) * 1986-09-02 1988-03-10 Telefunken Electronic Gmbh Elektronische schaltung zur erkennung von zuendaussetzern

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942102A (en) * 1973-05-25 1976-03-02 Siemens Aktiengesellschaft Spark ignited combustion engine analyzer
EP0020067B1 (fr) * 1979-05-25 1983-11-09 LUCAS INDUSTRIES public limited company Appareil pour tester les circuits électroniques d'allumage de moteurs à combustion interne
JPS56146925A (en) * 1980-04-16 1981-11-14 Hitachi Ltd Ignition and flame detector
JPS5786569A (en) * 1980-11-18 1982-05-29 Toshiba Corp Ignition detective circuit
US4418375A (en) * 1981-08-07 1983-11-29 Hunter Investment Company Solid state ignition system
US4449100A (en) * 1982-04-05 1984-05-15 Ford Motor Company Ignition system tester
JPH0660626B2 (ja) * 1983-07-11 1994-08-10 日本電装株式会社 内燃機関用点火装置
GB8505875D0 (en) * 1985-03-07 1985-04-11 Ti Crypton Ltd Engine analysers
JPH0687642B2 (ja) * 1986-12-15 1994-11-02 株式会社日立製作所 回転電機の回転子巻線異常診断装置
DE3729824A1 (de) * 1987-09-05 1989-03-16 Peter Dipl Ing Wagner Befestigungswinkel aus metall
US4886029A (en) * 1988-05-26 1989-12-12 Motorola Inc. Ignition misfire detector
EP0344349B1 (fr) * 1988-06-03 1994-12-07 Robert Bosch Gmbh Détection d'un défaut d'allumage dans les moteurs à allumage par étincelles
US4918389A (en) * 1988-06-03 1990-04-17 Robert Bosch Gmbh Detecting misfiring in spark ignition engines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629824A1 (de) * 1986-09-02 1988-03-10 Telefunken Electronic Gmbh Elektronische schaltung zur erkennung von zuendaussetzern

Also Published As

Publication number Publication date
DE3909906A1 (de) 1990-09-27
DE59009172D1 (de) 1995-07-06
EP0389775A3 (fr) 1991-05-15
ES2073464T3 (es) 1995-08-16
US5027073A (en) 1991-06-25
EP0389775A2 (fr) 1990-10-03

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