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EP0656096B1 - Zündanlage für brennkraftmaschinen mit fehlzündungserkennung durch vergleich mit referenzzündungen derselben zündspule - Google Patents

Zündanlage für brennkraftmaschinen mit fehlzündungserkennung durch vergleich mit referenzzündungen derselben zündspule Download PDF

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Publication number
EP0656096B1
EP0656096B1 EP94913011A EP94913011A EP0656096B1 EP 0656096 B1 EP0656096 B1 EP 0656096B1 EP 94913011 A EP94913011 A EP 94913011A EP 94913011 A EP94913011 A EP 94913011A EP 0656096 B1 EP0656096 B1 EP 0656096B1
Authority
EP
European Patent Office
Prior art keywords
ignition
spark
voltage
coil
values
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
EP94913011A
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German (de)
English (en)
French (fr)
Other versions
EP0656096A1 (de
Inventor
Karl-Heinz Kugler
Karlheinz Riedel
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
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0656096A1 publication Critical patent/EP0656096A1/de
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Publication of EP0656096B1 publication Critical patent/EP0656096B1/de
Anticipated expiration legal-status Critical
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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 an ignition system for internal combustion engines for monitoring individual ignition processes according to the preamble of the main claim.
  • An ignition system with a monitoring device from DE-A-41 16 642 is already known.
  • the spark duration and spark voltage are recorded by detecting the burning voltage transformed on the primary side and compared with limit values for correct ignition, so that when a faulty combustion is detected, a corresponding error signal, for example an optical signal, is output on the dashboard of the vehicle.
  • the limit values for correct ignition depending on the operating range are determined in the application and stored in a memory.
  • the ignition system according to the invention with the characterizing features of the main claim has the advantage that the limit values for correct ignition are not fixed, but are adapted to changing conditions, such as ignition coils with other parameters. Changes in the parameters of an ignition coil can therefore be taken into account, for example, after the ignition coil has been replaced in the workshop and an ignition coil from another manufacturer has been used by adapting the limit values. The result of this is that an ignition fault is not erroneously recognized after an ignition coil replacement, even though the ignition was correct or that a signal for correct ignition is output while the ignition was faulty. It is furthermore advantageous that reference values for the limit values are formed correct ignition, the measured variables spark duration and operating voltage are used, which are measured in a cylinder which is fed by the same ignition coil.
  • the measure specified in the subclaims It is particularly advantageous to store the measured values of the spark duration and the operating voltage, which are used for forming the reference value, in load and speed classes. Ultimately, it is advantageous to cyclically renew the values for the reference value formation, using, for example, the last 10 past values for the reference value formation and replacing the oldest value with the newly measured value after each ignition. Ultimately, it is advantageous to use only the measured values of the cylinders which are fed by the same ignition coil for the comparison. With an internal combustion engine with rotating distribution, the measured values of all cylinders can thus be compared, while when using double spark coils, for example, only the cylinders that are fed by this double spark coil are compared.
  • FIG. 1 shows the basic structure for detecting the spark duration and the operating voltage with a double spark coil and spark plugs
  • FIG. 2 shows the voltage curve in normal operation
  • FIG. 2a the working cycle
  • FIG. 2b the exhaust cycle
  • FIG. 3 shows the voltage curve when the spark plug 2 has a short to ground
  • FIG. 3a shows the voltage curve in the working cycle and FIG. 3b in the exhaust cycle
  • FIG. 4a the voltage curve in the exhaust cycle and in FIG. 4b a working cycle is shown
  • Figure 5 is a flow chart for error detection.
  • FIG. 1 shows a possibility of detecting and monitoring the voltage on the primary winding 10 of a double spark coil 11.
  • a tap 13 is provided between the primary winding 10 and the control transistor 12, which is led to the emitter of a pnp transistor.
  • the burning voltage induced on the primary side is thus conducted via a voltage divider 15/16 to the positive input of a comparator 17.
  • a reference voltage U REF is present at the second input of the comparator 17 and is specified, for example, by a control unit 18 for the respective operating state.
  • a spark duration corresponding to the output of the comparator 17 digital signal available, which is led to the control unit 18.
  • Another possibility is to lead the induced operating voltage directly to the control unit 18 via the pnp transistor 14 and the voltage divider 15/16, in order to evaluate the course of the operating voltage in addition to the spark duration.
  • a spark plug ZK1 and ZK2 is assigned to each end of the secondary winding 19.
  • the spark plug ZK2 is assigned a dashed connection 20 and a resistor 21 with dashed lines.
  • These representations 20 and 21 are intended to illustrate a shunt resistor on the spark plug ZK2, which is formed, for example, by contamination of the spark plug.
  • Figure 2 shows the voltage curve at the spark plugs ZK1 and ZK2 during combustion, with in Figure 2a the voltage curve U (ZK1), the spark plug ZK1 which is in the working cycle, and in Figure 2b the voltage curve U (ZK2), which is in the exhaust cycle Spark plug ZK2 shown.
  • the operating voltage in the work cycle is significantly greater than in the exhaust cycle due to the gas mixture and response voltage of the candles, but the spark lengths t1 to t2 are approximately the same.
  • FIGS. 3 and 4 each show the voltage curve at the spark plugs, while there is a short to ground on the spark plug ZK2, in FIG. 3 the spark plug ZK2 with a short to ground is in the exhaust stroke and in FIG. 4 in the working stroke.
  • FIG. 3a shows the voltage curve u (ZK1) on the spark plug ZK1 in the work cycle, while in FIG. 3b the spark plug ZK2 is in the exhaust cycle with a short to ground. Since no energy is converted at the spark plug ZK2, but the same amount of energy is available as in normal operation, the spark duration t1 to t2 will be longer.
  • step 31 the burning voltage U1 and U2 as well as the time of the breakdown ignition and the time of the end of the spark are determined to determine the spark duration t1 to t2.
  • step 32 these recorded values are assigned to the respective load or speed and are thus stored in tables.
  • the subsequent query 33 it is examined whether the detected values of the operating voltage and the spark duration associated with an ignition coil are approximately the same, taking into account an applicable tolerance variable T. If query 33 could be answered with yes, that is to say the measured variables correspond to the previously formed reference values, the yes output leads to a work step 34 in which the ignition is assessed as in order. A no to query 33 leads to work step 35, in which the examined ignition is rated as faulty.
  • error measures such as, for example, switching off the injection in this cylinder or increasing the voltage supply at the ignition coil are initiated so that in this case the spark plug can possibly burn itself free.
  • the subsequent ignition is examined in an analogous manner.

Landscapes

  • 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)
EP94913011A 1993-05-19 1994-04-22 Zündanlage für brennkraftmaschinen mit fehlzündungserkennung durch vergleich mit referenzzündungen derselben zündspule Expired - Lifetime EP0656096B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4316775 1993-05-19
DE4316775A DE4316775C2 (de) 1993-05-19 1993-05-19 Zündanlage mit einer Überwachungseinrichtung für einzelne Zündvorgänge für eine Brennkraftmaschine
PCT/DE1994/000449 WO1994027043A1 (de) 1993-05-19 1994-04-22 Zündanlage für brennkraftmaschinen mit fehlzündungserkennung durch vergleich mit referenzzündungen derselben zündspule

Publications (2)

Publication Number Publication Date
EP0656096A1 EP0656096A1 (de) 1995-06-07
EP0656096B1 true EP0656096B1 (de) 1996-12-11

Family

ID=6488481

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94913011A Expired - Lifetime EP0656096B1 (de) 1993-05-19 1994-04-22 Zündanlage für brennkraftmaschinen mit fehlzündungserkennung durch vergleich mit referenzzündungen derselben zündspule

Country Status (8)

Country Link
US (1) US5507264A (ru)
EP (1) EP0656096B1 (ru)
CN (1) CN1047431C (ru)
DE (2) DE4316775C2 (ru)
ES (1) ES2095762T3 (ru)
PL (1) PL307056A1 (ru)
RU (1) RU2121598C1 (ru)
WO (1) WO1994027043A1 (ru)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524499B4 (de) * 1995-07-05 2008-11-13 Robert Bosch Gmbh Zündanlage für eine Brennkraftmaschine
DE19536324A1 (de) * 1995-09-29 1997-04-03 Bayerische Motoren Werke Ag Verfahren zum Prüfen der Zündanlage einer Brennkraftmaschine
GB9523432D0 (en) * 1995-11-15 1996-01-17 British Gas Plc Internal combustion engine
SE510479C2 (sv) * 1996-06-12 1999-05-25 Sem Ab Sätt att alstra en spänning för att detektera en jonström i gnistgapet vid en förbränningsmotor
KR19980075034A (ko) * 1997-03-28 1998-11-05 배순훈 가스보일러의 착화방법
GB2325988A (en) * 1997-06-02 1998-12-09 Ford Motor Co Ignition coil monitoring arrangement
US5778855A (en) * 1997-07-03 1998-07-14 Ford Global Technologies, Inc. Combustion stability control for lean burn engines
US6426626B1 (en) * 1998-03-31 2002-07-30 Progressive Tool & Industries Company Apparatus and method for testing an ignition coil and spark plug
DE102004039036B4 (de) * 2003-08-12 2014-11-13 Denso Corporation Zündvorrichtung für eine Brennkraftmaschine
US8278808B2 (en) 2006-02-13 2012-10-02 Federal-Mogul Worldwide, Inc. Metallic insulator coating for high capacity spark plug
AT510034B1 (de) 2010-08-06 2012-01-15 Ge Jenbacher Gmbh & Co Ohg Zündfunkenbrenndauerbestimmung
DE102011100510B4 (de) * 2011-04-28 2014-02-13 Aev Energy Gmbh Verbrennungsmotorüberwachungsverfahren und -vorrichtung
US20150340846A1 (en) * 2014-05-21 2015-11-26 Caterpillar Inc. Detection system for determining spark voltage
US9429126B2 (en) * 2014-06-05 2016-08-30 Caterpillar Inc. System and method for detecting short-to-ground fault
CN105137965B (zh) * 2015-09-18 2019-01-25 航宇救生装备有限公司 一种多通道点火控制系统检测方法及装置
US20180135590A1 (en) * 2016-11-15 2018-05-17 Woodward, Inc. Controlling Engine Ignition

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2431799B2 (de) * 1974-07-02 1977-06-02 Gebr. Hofmann Kg Maschinenfabrik, 6100 Darmstadt Schaltung zur aufbereitung impulsfoermiger messignale eines induktiven gebers, der den zuendstrom in einer zuendanlage eines ottomotors abgreift
US4117807A (en) * 1977-02-02 1978-10-03 The Bendix Corporation Fuel injection cut off means for over temperature protection of exhaust treatment device
US4291383A (en) * 1979-12-20 1981-09-22 United Technologies Corporation Spark plug load testing for an internal combustion engine
JPS59115472A (ja) * 1982-12-22 1984-07-03 Automob Antipollut & Saf Res Center エンジン点火系統の診断装置
JPH01130059A (ja) * 1987-11-14 1989-05-23 Daihatsu Motor Co Ltd ポイントの故障検出方法
US4886029A (en) * 1988-05-26 1989-12-12 Motorola Inc. Ignition misfire detector
US4918389A (en) * 1988-06-03 1990-04-17 Robert Bosch Gmbh Detecting misfiring in spark ignition engines
US4913123A (en) * 1989-03-23 1990-04-03 Ford Motor Company Ignition timing system with feedback correction
JPH03213669A (ja) * 1990-01-18 1991-09-19 Japan Electron Control Syst Co Ltd 内燃機関の失火気筒検出装置
DE4116642C2 (de) * 1990-08-25 2000-05-11 Bosch Gmbh Robert Zündanlage einer Brennkraftmaschine mit einer Überwachungsschaltung zum Erkennen von Zündaussetzern
US5283527A (en) * 1991-06-28 1994-02-01 Ford Motor Company Methods and apparatus for detecting short circuited secondary coil winding via monitoring primary coil winding

Also Published As

Publication number Publication date
WO1994027043A1 (de) 1994-11-24
US5507264A (en) 1996-04-16
CN1104834A (zh) 1995-07-05
EP0656096A1 (de) 1995-06-07
RU2121598C1 (ru) 1998-11-10
CN1047431C (zh) 1999-12-15
RU95105456A (ru) 1996-11-20
DE59401262D1 (de) 1997-01-23
ES2095762T3 (es) 1997-02-16
DE4316775A1 (de) 1994-11-24
DE4316775C2 (de) 1995-05-18
PL307056A1 (en) 1995-05-02

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