EP0829642A1 - Verfahren zur Erkennung der Phasenlage eines Zylinders zur Zündung in einer Brennkraftmaschine - Google Patents

Verfahren zur Erkennung der Phasenlage eines Zylinders zur Zündung in einer Brennkraftmaschine Download PDF

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Publication number
EP0829642A1
EP0829642A1 EP97420161A EP97420161A EP0829642A1 EP 0829642 A1 EP0829642 A1 EP 0829642A1 EP 97420161 A EP97420161 A EP 97420161A EP 97420161 A EP97420161 A EP 97420161A EP 0829642 A1 EP0829642 A1 EP 0829642A1
Authority
EP
European Patent Office
Prior art keywords
ignition
spark
magnetic circuit
voltage
spark plug
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
EP97420161A
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English (en)
French (fr)
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EP0829642B1 (de
Inventor
Laurent Dufour
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Electricfil Industrie SARL
Electricfil SA
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Electricfil Industrie SARL
Electricfil SA
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Publication of EP0829642A1 publication Critical patent/EP0829642A1/de
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    • 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
    • F02P15/08—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 multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders

Definitions

  • the present invention relates to the technical field of heat engines internal combustion and more particularly, spark ignition engines, through candles.
  • the invention relates, more specifically, to the ignition system fitted to such motors and commonly called "static twin with lost spark” or distribution static, D.L.S. (Distributor Less System) or D.I.S. (Direct Ignition System).
  • D.L.S. Distributor Less System
  • D.I.S. Direct Ignition System
  • Such an ignition system comprises for a four-cylinder engine, two coils each composed of a primary winding and a winding secondary, wound on a magnetic circuit.
  • the two winding terminals secondary of each coil are each connected to a spark plug.
  • the associated spark plugs are those equipping the cylinders whose pistons are in synchronous positions. So the cylinder associated with one of the spark plugs is in the ignition phase while the cylinder associated with the other spark plug is at the end of the exhaust phase.
  • the polarities of the voltages supplied on each of the terminals of the secondary winding being opposite, one of the candles is powered by a positive voltage, while the other spark plug is powered by a negative voltage.
  • the polarity of the ignition spark of a given cylinder is therefore defined by construction and wiring. On the one hand, it depends on the construction of the coil ignition and, on the other hand, the wiring between the terminals of the secondary winding and the spark plugs of the associated cylinders.
  • the object of the invention is to remedy the drawbacks of the state of the technique by proposing a process allowing in a simple and economical way, detect the ignition phase of a cylinder of an internal combustion engine equipped a controlled ignition device of the "static spark-lost twin" type, in order to ensure, in particular, the initialization of the injection sequence.
  • Another object of the invention is to provide a device for detecting the ignition phase of a cylinder of an internal combustion engine with ignition controlled, ignition being ensured by a so-called “static spark twin system lost ", formed of at least one coil comprising a primary winding and a secondary winding, wound on a magnetic circuit, the terminals of a secondary winding being connected to a first and a second spark plug ignition associated with synchronous pistons.
  • the detection device is inserted between a reference voltage and an electrically floating magnetic circuit, so that the electrical potential of the magnetic circuit be an image of the electrical voltage mean of the secondary winding, the device being adapted to detect the polarity of the electric potential of the magnetic circuit corresponding to the appearance an ignition spark on a specific spark plug, in order to deliver a signal indicating that the cylinder associated with said spark plug is in the ignition phase.
  • Fig. 1 is a diagram illustrating a first embodiment of a detection device according to the invention.
  • Fig. 2 is a table illustrating the operating principle of the device according to the invention.
  • Fig. 3 is a diagram illustrating another exemplary embodiment of a detection device according to the invention.
  • the device 1 is designed to detect the ignition phase of a predetermined cylinder of an internal combustion engine, the ignition of which is controlled by a system 2 , called “static twin with lost spark".
  • An ignition system called “static twin with lost spark” 2 comprises, for a four-cylinder engine, two ignition coils 3 , one of which has only been shown in the drawings.
  • Each ignition coil 3 is composed of a primary winding 4 forming part of a primary circuit 5 not shown but known per se and of a secondary winding 6 .
  • the primary winding 4 and the secondary winding 6 are wound on a magnetic circuit 7 .
  • One of the terminals of the secondary winding 6 is connected to a first spark plug 8
  • the other terminal of the secondary winding 6 is connected to a second spark plug 9
  • the spark plugs 8, 9 which are connected to a reference potential 10, namely the electrical ground, are each associated with a determined cylinder of the engine.
  • the first and second spark plugs 8 and 9 correspond to those fitted to the cylinders whose pistons are in synchronous positions, so that the cylinder associated with one of the spark plugs is in the ignition phase while the cylinder associated with the other spark plug is at the end of the exhaust phase.
  • the first spark plug 8 is associated, for example, with cylinder No. 1 of the engine
  • the second spark plug 9 is associated with cylinder No. 4 .
  • the coil 3 provides, for a given engine revolution, a strongly negative voltage on one of the spark plugs and a weakly positive voltage on the other spark plug, while on the next engine revolution, the voltage levels are swapped over the candles.
  • the voltage V 1 on the spark plug 8 has, in the example illustrated, a high negative value, for example of the order of - 20 Kilo Volts, while the voltage V 4 on the candle 9 is weakly positive, for example of the order of + 2 Kilo Volts.
  • the voltage V 1 on the spark plug 8 is slightly negative, for example of the order of - 2 Kilo Volts, while the voltage on the spark plug 9 is high, for example of the order of + 20 Kilo Volts.
  • the candle voltages associated with the same coil are therefore of opposite polarities and of high and low levels.
  • the spark plug voltages are high and low for the associated cylinders which are respectively in the ignition phase and at the end of the exhaust phase.
  • an ignition coil 3 consisting of a primary winding 4 and a secondary winding 6 , wound on a magnetic circuit 7 , it appears between the secondary winding 6 and the magnetic circuit 7, a capacitive coupling. If the magnetic circuit 7 is electrically floating or not directly connected to a voltage reference, the electric potential of the magnetic circuit 7 is an image of the average electric voltage of the secondary winding 6 . The potential values recorded on the electrically floating magnetic circuit 7 are of the order of a few hundred volts to a few kilo volts.
  • the potential V N of the electrically floating magnetic circuit 7 image of the average voltage U AVG of the secondary winding 6 , is therefore negative, reaching for example - 3 Kilo Volts.
  • the voltage V 1 of the spark plug 8 is slightly negative (for example - 2 Kilo Volts)
  • the voltage V 4 on the spark plug 9 is a positive ignition spark that can reach + 20 Kilo Volts
  • the average voltage U MOY of the secondary winding 6 is therefore equal, in this example, to + 9 Kilo Volts.
  • the potential V N of the magnetic circuit 7, image of the average voltage is therefore positive, reaching for example + 3 Kilo Volts.
  • the polarity of the electrical potential of the magnetic circuit 7 corresponds to the polarity of the ignition spark.
  • the polarity of the ignition spark allows to know the associated cylinder.
  • the device 1 is designed to detect the polarity of the electric potential of the magnetic circuit 7 , with a view to detecting the ignition phase of a cylinder.
  • the detection device 1 is inserted between the electrically floating magnetic circuit 7 and a voltage reference 14.
  • the voltage reference 14 and the reference potential 10 are placed at the same value such as the electrical ground.
  • the detection device 1 is constituted, in the example illustrated, by a current limiting resistor 15 associated in series with a clipping Zener diode 16.
  • the anode of the Zener diode 16 is connected to the voltage reference 14 , while its cathode, which is connected to the resistor 15 , delivers a control signal V S1 intended to be used by processing or calculation means not shown controlling the ignition of the cylinders and the injection of fuel.
  • the detection device 1 delivers a negative signal V S1 of low value (voltage of the Zener diode in passing direction), corresponding to the appearance of 'a strongly negative ignition spark on the spark plug 8 indicating that the associated cylinder is in the ignition phase.
  • V S1 negative signal
  • the detection means 13 delivers a signal V S1 of positive voltage equal to the clipping voltage of the Zener diode 16 , for example + 5 Volts.
  • V S1 of positive voltage
  • the signal V S1 can thus be used by the calculation or processing means, with a view, in particular, to initializing and controlling the normal course of the fuel injection sequence.
  • the exploitation of this signal can be carried out on an edge detection or on a state detection.
  • the device 1 according to the invention makes it possible to determine which of the cylinders is in the ignition phase.
  • the detection device according to the invention has the advantage of using an internal phenomenon inevitable in the operation of the ignition coil, namely the capacitive coupling between the secondary winding and the magnetic circuit. Such a device does not disturb the operation of the coil and does not alter its performance. Operational safety is guaranteed by the construction of the coil thanks to the galvanic isolation made between the secondary winding and the magnetic circuit.
  • the device according to the invention has a small footprint and a low cost and can be advantageously integrated into the body of the coil and be coated with resin during the impregnation of the windings.
  • the device according to the invention applies equally to ignition devices consisting of a coil and a bundle of high-voltage cables or of a coil block mounted directly on the spark plugs.
  • the detection device 1 delivers a signal V S1 whose most characteristic level change (0 and + 5 Volts relative to 0 and - 0.6 Volts) appears for a positive spark.
  • Fig. 3 describes another variant of a detection device 1 adapted to deliver a signal whose level change appears to be the most significant for a negative spark.
  • the detection device 1 is inserted between the magnetic circuit 7 and a voltage reference 14 of positive value, for example equal to the voltage of 12 Volts of the battery of a vehicle.
  • the detection device 1 consists of a current limiting resistor 15 connected in series to the anode of a clipping Zener diode 16 , the cathode of which is connected to the voltage reference 14.
  • the detection device 1 consists of a resistor and a Zener diode. It is clear that provision may be made for using various other means to detect the polarity of the potential of the magnetic circuit 7 .
  • the detection device can use as detection means, resistive dividing bridges, capacitive dividing bridges, optocouplers or any other suitable system or component.
  • the detection device 1 may include means for shaping the signal delivered V S1 , V S2 . These shaping means can consist of filters, load resistors, output stages or any other signal shaping system capable of facilitating its use by the computing means.

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)
EP19970420161 1996-09-11 1997-09-10 Verfahren zur Erkennung der Phasenlage eines Zylinders zur Zündung in einer Brennkraftmaschine Expired - Lifetime EP0829642B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9611282A FR2753234B1 (fr) 1996-09-11 1996-09-11 Procede pour detecter la phase d'allumage d'un cylindre d'un moteur a combustion interne a allumage commande, afin de permettre notamment l'initialisation de la sequence d'injection
FR9611282 1996-09-11

Publications (2)

Publication Number Publication Date
EP0829642A1 true EP0829642A1 (de) 1998-03-18
EP0829642B1 EP0829642B1 (de) 2004-03-03

Family

ID=9495781

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Application Number Title Priority Date Filing Date
EP19970420161 Expired - Lifetime EP0829642B1 (de) 1996-09-11 1997-09-10 Verfahren zur Erkennung der Phasenlage eines Zylinders zur Zündung in einer Brennkraftmaschine

Country Status (3)

Country Link
EP (1) EP0829642B1 (de)
DE (1) DE69727871T2 (de)
FR (1) FR2753234B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777321A1 (fr) * 1998-04-09 1999-10-15 Sagem Procede de detection de la phase de fonctionnement d'un moteur a combustion interne
WO2007031521A1 (de) * 2005-09-12 2007-03-22 Pulse Gmbh Anordnung zum hochspannungsseitigen erfassen eines messsignals, insbesondere eines dem ionenstrom zwischen den elektroden einer zündkerze einer brennkraftmaschine entsprechenden signals
CN112145330A (zh) * 2020-09-27 2020-12-29 张明芬 一种四缸点火变压器、初级电流配置方法、点火模块和系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2888619B1 (fr) * 2005-07-13 2007-10-19 Electricfil Automotive Soc Par Procede pour detecter la phase d'allumage d'un cylindre d'un moteur a combustion interne avec limitation de tension

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272225A1 (de) * 1986-12-15 1988-06-22 FIAT AUTO S.p.A. Einrichtung zur Bestimmung von Wirkungsphasen eines Zylinders eines Verbrennungsmotors mit Zündsteuerung
WO1989008778A1 (en) * 1988-03-18 1989-09-21 Robert Bosch Gmbh Cylinder recognition apparatus for a distributorless ignition system
EP0619428A2 (de) * 1993-04-08 1994-10-12 Saturn Corporation Motorpositionsdetektion für ein Direktzündsystem

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272225A1 (de) * 1986-12-15 1988-06-22 FIAT AUTO S.p.A. Einrichtung zur Bestimmung von Wirkungsphasen eines Zylinders eines Verbrennungsmotors mit Zündsteuerung
WO1989008778A1 (en) * 1988-03-18 1989-09-21 Robert Bosch Gmbh Cylinder recognition apparatus for a distributorless ignition system
EP0619428A2 (de) * 1993-04-08 1994-10-12 Saturn Corporation Motorpositionsdetektion für ein Direktzündsystem

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2777321A1 (fr) * 1998-04-09 1999-10-15 Sagem Procede de detection de la phase de fonctionnement d'un moteur a combustion interne
WO2007031521A1 (de) * 2005-09-12 2007-03-22 Pulse Gmbh Anordnung zum hochspannungsseitigen erfassen eines messsignals, insbesondere eines dem ionenstrom zwischen den elektroden einer zündkerze einer brennkraftmaschine entsprechenden signals
JP2009508131A (ja) * 2005-09-12 2009-02-26 プルゼ ゲゼルシャフト ミット ベシュレンクテル ハフツング 測定信号を、詳細には内燃機関の点火プラグの電極間のイオン流に対応する信号を高電圧側検知するための装置
JP4672773B2 (ja) * 2005-09-12 2011-04-20 プルゼ ゲゼルシャフト ミット ベシュレンクテル ハフツング 測定信号を、詳細には内燃機関の点火プラグの電極間のイオン流に対応する信号を高電圧側検知するための装置
CN112145330A (zh) * 2020-09-27 2020-12-29 张明芬 一种四缸点火变压器、初级电流配置方法、点火模块和系统
CN112145330B (zh) * 2020-09-27 2022-05-13 温州市奥立达电器有限公司 一种四缸点火变压器、初级电流配置方法、点火模块和系统

Also Published As

Publication number Publication date
DE69727871T2 (de) 2005-01-27
DE69727871D1 (de) 2004-04-08
FR2753234A1 (fr) 1998-03-13
FR2753234B1 (fr) 1998-12-04
EP0829642B1 (de) 2004-03-03

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