EP0608229A1 - Systeme d'allumage pour moteurs a combustion interne. - Google Patents

Systeme d'allumage pour moteurs a combustion interne.

Info

Publication number
EP0608229A1
EP0608229A1 EP92907839A EP92907839A EP0608229A1 EP 0608229 A1 EP0608229 A1 EP 0608229A1 EP 92907839 A EP92907839 A EP 92907839A EP 92907839 A EP92907839 A EP 92907839A EP 0608229 A1 EP0608229 A1 EP 0608229A1
Authority
EP
European Patent Office
Prior art keywords
ignition
sensor
cylinder
ignition system
cylinders
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.)
Granted
Application number
EP92907839A
Other languages
German (de)
English (en)
Other versions
EP0608229B1 (fr
Inventor
Udo Mai
Uwe Hartmann
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.)
Vogt Electronic AG
Original Assignee
Vogt Electronic 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 Vogt Electronic AG filed Critical Vogt Electronic AG
Publication of EP0608229A1 publication Critical patent/EP0608229A1/fr
Application granted granted Critical
Publication of EP0608229B1 publication Critical patent/EP0608229B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • F02P3/045—Layout of circuits for control of the dwell or anti dwell time
    • F02P3/0453—Opening or closing the primary coil circuit with semiconductor devices
    • F02P3/0456—Opening or closing the primary coil circuit with semiconductor devices using digital techniques
    • 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
    • F02P11/00—Safety means for electric spark ignition, not otherwise provided for
    • F02P11/06—Indicating unsafe conditions
    • 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
    • F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
    • F02P15/10—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having continuous electric sparks
    • 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
    • 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
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F02P9/002—Control of spark intensity, intensifying, lengthening, suppression

Definitions

  • the invention relates to an ignition system according to the introductory part of patent claim 1.
  • the ignition of the fuel / air mixture in the cylinder must be very precise in time. A large ignition energy must be provided for this. Assuming normal operation, this high energy only has to be applied to the spark plug for a short time. In unfavorable conditions, the ignition of the fuel-air mixture with short ignition current phases is not guaranteed. For this reason, the high-voltage capacitor ignition (HKZ), which is in itself advantageous for normal operation, has not been able to establish itself.
  • HKZ high-voltage capacitor ignition
  • misfire is extremely undesirable because of emissions regulations and the use of catalysts.
  • a high spark plug burn-up causes the ignition precision and the service life of the spark plugs to be reduced.
  • the invention has for its object to provide an ignition system according to the introductory part of claim 1, which offers high security against misfires with largely minimized spark plug wear.
  • the ignition current for each ignition process is only maintained for as long as is absolutely necessary to ignite the fuel-air mixture after the ignition spark has jumped over. In normal cases, this period is very short. It can also be relatively long under difficult conditions. As a result of the matching of the ignition current duration to the respective requirement made possible by the ignition system according to the invention, the spark plug burn-up is minimized as far as possible.
  • the ignition system according to the invention can also be used in a very simple manner for one indicate the occurrence of misfires and / or the occurrence of misfires increased risk by observing zusharm ⁇ Lich, if and when within the mecanicstimm ⁇ th maximum time until shutdown of Zündein ⁇ direction for individual cylinders flashings the saufin ⁇ .
  • the subclaims relate to preferred configurations of the ignition system according to claim 1.
  • Fig.l the block diagram of the first embodiment
  • FIG 2 shows the block diagram of the second embodiment.
  • the ignition device individually assigned to each cylinder of the internal combustion engine has a separate ignition module for each cylinder, which can be switched on and off quickly, ie practically without delay, and one in the switched-on state can supply unlimited combustion current to the respective spark plug.
  • the individual inflammations in the cylinders or the absence of enflammations during the maximum on-time of the ignition modules are sensed and the respective ignition module is switched off immediately after the ignition of the fuel / air mixture in the associated cylinder.
  • a suitable ignition device is described, for example, in patent application P 39 28 726.2 dated August 30. Described in 1989.
  • the sensor required for this can also be used as a knock sensor. It could also be a common acoustic sensor can be used.
  • the basic idea in the ignition system according to the invention is to have an ignition spark applied only until the fuel / air mixture is ignited in the cylinder. Most of the time, this process is very short and, accordingly, the required electrical ignition energy is small. In rare cases where there is no immediate ignition, the ignition current continues to flow through the spark plug until the mixture becomes ignitable. The amplitude of the ignition current preferably increases progressively in order to facilitate the ignition process. The same also applies to the high voltage if there is initially no sparking.
  • the ignition processes are preferably monitored not only with regard to the occurrence or non-occurrence of inflammations but also with regard to the time period between the target ignition point and the actual ignition, and if longer ignition delays occur more frequently, this fact can be recorded in the on-board computer and the driver be displayed as a warning of an increased risk of misfiring. This enables early service intervention before misfires occur. On the other hand, the display of misfires draws the user's attention to the fact that the further operation of the engine is immediately at high risk for it or for parts thereof, e.g. the catalyst.
  • the ignition module provided separately for each cylinder is designated by 5.
  • a separate sensor in the form of a pressure sensor that responds to the pressure prevailing in the cylinder.
  • the sensor 1 sends its signal of the mixture pressure to a comparator 2. This compares the signal with a reference limit voltage, which is selected so that only signals from sensor 1 reach the comparator output, which are triggered by a pressure in the cylinder that is greater than the compression.
  • An OR gate 3 transmits these signals to a flip-flop 4, which was previously set by ignition timing electronics 7, and resets it.
  • the FF 4 switches the ignition module 5 on in the set state and off in the reset state. Regardless of the comparator 2, the FF 4 is reset via the OR gate 3 if there is no ignition after about half a crankshaft rotation by a signal from the ignition timing electronics 7 and the ignition is therefore switched off in any case. This process is recognized and displayed (error signal).
  • the ignition timing electronics 7 receive information from the output of the FF 4 about the switch-on and switch-off times of the respective ignition modules 5.
  • an optical sensor could also be used for each of the cylinders.
  • a conventional sound sensor for knock detection is used as sensor 1 'for detecting the explosive ignition in the individual cylinders.
  • a circuit arrangement is arranged downstream of each time window, which essentially corresponds to the circuit arrangement with components 2, 3 and 4 in the embodiment according to FIG. 1 and performs the same function as this.
  • the components are designated 2 ', 3' and 4 'here.
  • the ignition electronics 7 receive information about the piston positions through the camshaft sensor designated here 6 ', which delivers a signal corresponding to the instantaneous angular position of the camshaft.
  • the power supply for the ignition modules 5 ' is provided by a power supply unit 8' which corresponds to the power supply unit 8 provided for the same purpose in the embodiment according to FIG. 1.
  • the setting of the FF 4 'and its resetting at the end of the predetermined maximum period of time is carried out in the ignition timing electronics 7' by the usual microprocessor 11, which is also provided in the embodiment according to FIG. 1 (not shown there) and which controls the engine Signals corresponding to operating data, the signals of the camshaft sensor 6 'and, if appropriate, further signals which have been entered into it and are important for the operation of the machine are evaluated and linked in a program-controlled manner.
  • the embodiment according to FIG. 2 thus differs from the embodiment according to FIG. 1 essentially in that instead of a separate sensor 1 for each
  • Cylinder a sensor 1 'common to all cylinders is provided.
  • a modification to the above-described mode of operation is that for each of the cylinders, the ignition device, in the case of the embodiment Examples according to FIGS. 1 and 2, ie the relevant ignition module, switched on for the desired target ignition time as there, after one of the normal ignition delays, ie the delay that normally occurs between the switching on of the ignition and the Time of ignition, corresponding time period switched off again independently of the sensor and only switched on again within the predetermined maximum time period provided for the ignition process with ignition, if necessary repeatedly, if the sensor responsible for the cylinder does not Inflammation reports or has reported.
  • the ignition device in the case of the embodiment Examples according to FIGS. 1 and 2
  • the relevant ignition module switched on for the desired target ignition time as there, after one of the normal ignition delays, ie the delay that normally occurs between the switching on of the ignition and the Time of ignition, corresponding time period switched off again independently of the sensor and only switched on again within the predetermined maximum time period provided for the ignition process with ignition, if necessary repeatedly, if the sensor responsible for the
  • This procedure allows an inertia of the sensors and / or the increase in pressure in the cylinder associated with the ignition to be taken into account in such a way that, in the normal case, there is no unnecessary extension of the spark plug burning time.
  • the above-mentioned error and warning signals can of course also be formed and displayed in this case by appropriate monitoring.

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)

Abstract

Un système d'allumage se caractérise par une fiabilité élevée concernant les ratés d'allumage et par une usure minimale des bougies d'allumage. A cet effet, chaque dispositif d'allumage (5), parmi plusieurs dispositifs d'allumage qui sont individuellement associés à chaque cylindre, est enclenché en synchronisation avec le moment prescrit d'allumage du cylindre correspondant, peut fournir dans son état enclenché, un courant d'allumage à la bougie d'allumage pendant une période indéterminée, et est déclenché immédiatement de manière réglable par un capteur (1) qui détecte la combustion dans le cylindre lorsque le mélange carburant/air dans le cylindre s'est enflammé. Le dispositif d'allumage (5) est déclenché dans tous les cas pour chaque cylindre, une fois une période maximale prédéterminée écoulée, même lorsque la combustion n'a pas eu lieu. Dans un autre mode de réalisation, le dispositif d'allumage (5) est déclenché dans tous les cas une première fois, indépendamment du capteur (1), une fois qu'une durée qui correspond au délai normal entre l'enclenchement du dispositif d'allumage et la combustion s'est écoulée, et n'est enclenché de nouveau que lorsque le capteur (1) ne détecte pas ou ne détecte plus de combustion.
EP92907839A 1991-04-30 1992-04-03 Systeme d'allumage pour moteurs a combustion interne Expired - Lifetime EP0608229B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4114087A DE4114087A1 (de) 1991-04-30 1991-04-30 Zuendanlage fuer verbrennungskraftmaschinen
DE4114087 1991-04-30
PCT/EP1992/000753 WO1992019863A1 (fr) 1991-04-30 1992-04-03 Systeme d'allumage pour moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP0608229A1 true EP0608229A1 (fr) 1994-08-03
EP0608229B1 EP0608229B1 (fr) 1996-08-28

Family

ID=6430665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92907839A Expired - Lifetime EP0608229B1 (fr) 1991-04-30 1992-04-03 Systeme d'allumage pour moteurs a combustion interne

Country Status (5)

Country Link
US (1) US5447136A (fr)
EP (1) EP0608229B1 (fr)
JP (1) JPH06506747A (fr)
DE (2) DE4114087A1 (fr)
WO (1) WO1992019863A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692484A (en) * 1994-11-03 1997-12-02 Delco Electronics Corp. Synchronization circuit for a coil-per-plug ignition system
JP3331789B2 (ja) * 1994-11-29 2002-10-07 トヨタ自動車株式会社 内燃機関の点火時期制御装置
DE19608526C2 (de) * 1996-03-06 2003-05-15 Bremi Auto Elek K Bremicker Gm Verfahren zur Regelung der Mindestzündenergie bei einer Brennkraftmaschine
DE69703484T2 (de) * 1997-06-02 2001-03-15 Federal Mogul Ignition Spa Vielfachfunkenzündsystem für eine Brennkraftmaschine
DE19817082A1 (de) * 1998-04-17 1999-10-21 Daimler Chrysler Ag Verfahren zur Ansteuerung wenigstens einer Zündkerze einer Brennkraftmaschine
DE102007029953A1 (de) * 2007-06-28 2009-01-02 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Regelung der Zündenergie
US9784635B2 (en) * 2015-06-29 2017-10-10 General Electric Company Systems and methods for detection of engine component conditions via external sensors

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
GB1334230A (en) * 1970-01-29 1973-10-17 Lucas Industries Ltd Spark ignition systems for internaal combustion engines
DE3009821A1 (de) * 1980-03-14 1981-10-01 Robert Bosch Gmbh, 7000 Stuttgart Zuendanlage fuer brennkraftmaschinen
JPS56167852A (en) * 1980-05-29 1981-12-23 Nippon Soken Inc Ignition apparatus for internal combustion engine
US4438751A (en) * 1982-06-01 1984-03-27 Aisin Seiki Kabushiki Kaisha High voltage generating circuit for an automotive ignition system
US4653459A (en) * 1984-08-23 1987-03-31 Robert Bosch Gmbh Method and apparatus for igniting a combustible mixture, especially gasoline-air in the combustion chamber of an internal combustion engine
IT1208855B (it) * 1987-03-02 1989-07-10 Marelli Autronica Sistema di accensione ad energia di scintilla variabile per motori acombustione interna particolarmente per autoveicoli
DE3735234C2 (de) * 1987-10-17 1995-05-11 Opel Adam Ag Zündüberwachungseinrichtung zur Erkennung von Zündaussetzern in einer Zündanlage für einen Verbrennungsmotor für ein Kraftfahrzeug
US5043900A (en) * 1988-10-03 1991-08-27 Ford Motor Company Ignition system with feedback controlled dwell
DE3835285A1 (de) * 1988-10-15 1990-04-19 Bosch Gmbh Robert Verfahren und vorrichtung zur zuendaussetzerkennung
US5056497A (en) * 1989-04-27 1991-10-15 Aisin Seiki Kabushiki Kaisha Ignition control system
DE3928726A1 (de) * 1989-08-30 1991-03-07 Vogt Electronic Ag Zuendsystem mit stromkontrollierter halbleiterschaltung
JP2784069B2 (ja) * 1989-12-28 1998-08-06 富士重工業株式会社 エンジンの失火判定装置
US4998526A (en) * 1990-05-14 1991-03-12 General Motors Corporation Alternating current ignition system
JPH04148077A (ja) * 1990-10-12 1992-05-21 Mitsubishi Electric Corp イオン電流検出装置
US5241937A (en) * 1991-12-09 1993-09-07 Honda Giken Kogyo Kabushiki Kaisha Misfire-detecting system for internal combustion engines
EP0547258B1 (fr) * 1991-12-17 1995-06-07 Siemens Aktiengesellschaft Dispositif d'allumage pour moteur à combustion interne

Non-Patent Citations (1)

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Title
See references of WO9219863A1 *

Also Published As

Publication number Publication date
EP0608229B1 (fr) 1996-08-28
WO1992019863A1 (fr) 1992-11-12
US5447136A (en) 1995-09-05
DE59207020D1 (de) 1996-10-02
JPH06506747A (ja) 1994-07-28
DE4114087A1 (de) 1992-11-05

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