EP0953109A1 - Zündvorrichtung mit ionenstrom-messeinrichtung - Google Patents
Zündvorrichtung mit ionenstrom-messeinrichtungInfo
- Publication number
- EP0953109A1 EP0953109A1 EP97910226A EP97910226A EP0953109A1 EP 0953109 A1 EP0953109 A1 EP 0953109A1 EP 97910226 A EP97910226 A EP 97910226A EP 97910226 A EP97910226 A EP 97910226A EP 0953109 A1 EP0953109 A1 EP 0953109A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ion current
- ignition
- switch
- primary winding
- 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
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
- 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
- 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
- F02P2017/125—Measuring ionisation of combustion gas, e.g. by using ignition circuits
Definitions
- the invention relates to an inductive ignition device for an internal combustion engine with a measuring device for determining the ion current at the spark plug of each cylinder and with an ignition coil device per spark plug which forms the high ignition voltage and works according to the transformer principle and has a primary winding and a secondary winding Ion current flows.
- the ion current measurement is based on the principle that ions are formed during the combustion of the fuel-air mixture. This ionization is based on different mechanisms that characterize the typical course of the ion current and therefore allow a statement about certain parameters of the combustion etc. If a voltage is applied to the electrodes of the spark plug for ion current measurement, the electrons and ions present in the combustion chamber are moved in the corresponding direction of the electrical field, so that a current is formed which is carried by these charge carriers. This current represents the ion current mentioned above.
- the ion current measuring method known per se is used in an inductive ignition device which has a ignition coil device which operates according to the transformer principle and has a primary winding and a secondary winding, there is the disadvantage due to the relatively large secondary inductance a poorly controllable spark duration of the spark plug, which can lead to the measurement being obstructed. Moreover Due to the relatively large secondary inductance in the ion current signal path, only relatively low frequencies can be transmitted, which are not sufficient, for example, for reliable knock detection.
- the ignition device with the features mentioned in the main claim has the advantage that a switch that short-circuits the primary winding of the ignition coil device during the duration of the ion current measurement dissipates the residual energy in the magnetic circuit of the ignition coil on the primary side, that is, converts it into thermal energy and insofar as the ignition spark is no longer operated, so that it extinguishes very quickly and reproducibly at the desired time.
- the cut-off frequency of the second side of the ignition coil is also pushed up significantly, so that possible knocking vibrations of the internal combustion engine can be observed undamped as an undesired operating state, since the knocking vibrations have significant ion current profiles entail.
- the switching path of the switch is very low-resistance in the closed state.
- the primary circuit of the ignition coil device is thus clearly lower-resistance than the secondary circuit, so that the ignition spark goes out quickly.
- the switch can be designed as a field effect transistor (FET), which has a low-impedance switching path at low forward voltages.
- the measuring device has a control device which preferably closes the switch periodically at the desired spark end, at least for the duration of the entire ion current measurement. In the case of a field effect transistor, this is done by driving it accordingly.
- Figure 1 is a circuit diagram of an inductive ignition device with ion current measuring device according to a first embodiment
- FIG. 2 shows a second exemplary embodiment of an inductive ignition device with a measuring device for determining the ion current.
- FIG. 1 shows an inductive ignition device for an internal combustion engine, not shown.
- the ignition device has a ignition coil device 1, which comprises a primary winding L1 and a secondary winding L2, which are magnetically coupled to one another.
- One winding end 2 of the Primary winding L1 is connected to the operating voltage, that is, the battery voltage O of a motor vehicle, not shown, in which the internal combustion engine is installed.
- the other winding end 3 of the primary winding L1 leads to the switching path of a transistor Tl, which is controlled by a control device (not shown) in accordance with the desired ignition time.
- the winding end 3 can thus be applied to ground M in the conductive state of the transistor Tl (negative pole of the battery emitting the voltage U ⁇ ).
- a spark plug ZK which belongs to the internal combustion engine (not shown), is connected to ground M with one of its electrodes 4.
- the other electrode 5 of the spark plug ZK is connected to a winding end 6 of the secondary winding L2 of the ignition coil device 1.
- the other winding end 7 of the ignition coil device 1 leads to a measuring device 8, which is used to measure an ion current I. Furthermore, the measuring device 8 is connected to ground M.
- One winding end 2 of the primary winding L1 of the ignition coil device 1 is connected to a pole of a switch S1.
- the other pole of the switch S1 leads to the other winding end 3 of the primary winding L1.
- the switch S1 is preferably designed as a field effect transistor (FET), the gate 9 of which can be controlled by means of a control device (not shown, indicated only by an arrow 10) in order to short-circuit the primary winding L1 during the desired time intervals can.
- FET field effect transistor
- the cut-off frequency of the secondary side of the ignition coil device is shifted significantly upward, so that the measurement can be carried out very precisely in the relevant range of knocking vibrations, i.e. it is a particularly critical, undesirable operating state of the internal combustion engine due to the measurement of the ion current sensible. Because of the procedure according to the invention, namely the short-circuiting of the primary winding during the entire duration of the ion current measurement, such a precise and short spark duration is triggered the spark plug is implemented so that the effects of ignition spark do not under any circumstances hinder the subsequent measurement evaluation or "overlap" the measurement period.
- the short circuiting according to the invention also prevents the ignition system from swinging out, that is to say the measurement of the ion current cannot be influenced by swinging out, which can lead to misinterpretations.
- the clear band limitation present in conventional systems is overcome, which up to now has sensitively disturbed the detection of undesired operating states, for example knocking vibrations (3 to 20 kHz).
- the invention thus improves the previously poor signal transmission properties of the secondary winding through which the ion current flows.
- FIG. 2 shows a further exemplary embodiment of an inductive ignition device with a measuring device for determining an ion current, identical parts having the same reference numerals as in FIG. 1.
- the same statements apply to the exemplary embodiment in FIG. 2 as to the exemplary embodiment in FIG. 1, so that only the differences between these two exemplary embodiments will be discussed below.
- the evaluation device 8 for measuring the ion current in the exemplary embodiment of FIG. 1 is arranged in the secondary circuit of the ignition coil device 1, it is in the exemplary embodiment 2 in the primary circuit, namely the positive pole of the battery voltage U b is connected to the measuring device 8 and leads from there to the one winding end 2 of the primary winding L1.
- the other winding end 3 of the primary winding L1 is connected to the collector of the transistor T1, the emitter of which leads to ground M (negative pole of the battery voltage U b ).
- the electrode 4 of the spark plug ZK is connected to ground M.
- the other electrode 5 of the spark plug ZK is connected to the winding end 7 of the secondary winding L2 of the ignition coil device 1 and the other winding end 6 of the secondary winding L2 is connected to the winding end 2 of the primary winding L1.
- the switch S1 which is also preferably in the form of a field effect transistor (FET), is connected in parallel with the primary winding L1, that is to say the one pole of the switching path of the switch S1 is connected to the winding end 2 and the other pole of the switch S1 is connected to the winding end 3 of the primary winding Ll Ignition coil device 1 connected.
- FET field effect transistor
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
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19649278A DE19649278A1 (de) | 1996-11-28 | 1996-11-28 | Zündvorrichtung mit Ionenstrom-Meßeinrichtung |
DE19649278 | 1996-11-28 | ||
PCT/DE1997/002198 WO1998023859A1 (de) | 1996-11-28 | 1997-09-26 | Zündvorrichtung mit ionenstrom-messeinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0953109A1 true EP0953109A1 (de) | 1999-11-03 |
EP0953109B1 EP0953109B1 (de) | 2003-03-19 |
Family
ID=7812996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97910226A Expired - Lifetime EP0953109B1 (de) | 1996-11-28 | 1997-09-26 | Zündvorrichtung mit ionenstrom-messeinrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US6424155B1 (de) |
EP (1) | EP0953109B1 (de) |
JP (1) | JP2001506721A (de) |
KR (1) | KR100498797B1 (de) |
DE (2) | DE19649278A1 (de) |
WO (1) | WO1998023859A1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19839868C1 (de) * | 1998-09-02 | 2000-02-10 | Stiebel Eltron Gmbh & Co Kg | Verfahren und Schaltung zum Erfassen des Luft-Kraftstoff-Verhältnisses einer Verbrennungsphase einer Verbrennungskraftmaschine |
DE19845400A1 (de) * | 1998-10-02 | 1999-12-16 | Daimler Chrysler Ag | Hochspannungstransistorspulenzündung mit Stromregeleinrichtung und Ionenstrommesseinrichtung |
DE19849258A1 (de) | 1998-10-26 | 2000-04-27 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Energieregelung an Zündsystemen mit primärseitigem Kurzschlußschalter |
DE60039325D1 (de) * | 1999-06-25 | 2008-08-14 | Ngk Spark Plug Co | Zündeinheit für innere Brennkraftmaschine |
DE19953710B4 (de) * | 1999-11-08 | 2010-06-17 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Meßfenster-Positionierung für die Ionenstrommessung |
JP3869275B2 (ja) * | 2001-04-05 | 2007-01-17 | 株式会社日本自動車部品総合研究所 | 内燃機関のイオン電流検出装置 |
DE10234252B4 (de) * | 2002-07-27 | 2008-09-25 | Robert Bosch Gmbh | Verfahren zur Erkennung von Verbrennungsaussetzern |
DE102005044030B4 (de) * | 2005-09-14 | 2011-02-17 | Stiebel Eltron Gmbh & Co. Kg | Verfahren und Einrichtung zur Ionisationsmessung bei Verbrennungskraftmaschinen mit Unterdrückung der Zündrestspannung |
DE102005041823B3 (de) * | 2005-09-02 | 2007-02-01 | Siemens Ag | Steuergerät zum Betrieb wenigstens eines Kraftstoffinjektors einer Brennkraftmaschine |
DE102006010807B4 (de) * | 2006-03-07 | 2015-06-25 | Volkswagen Aktiengesellschaft | Schaltung zum Erfassen verbrennungsrelevanter Größen |
EP3022437A4 (de) * | 2013-07-17 | 2018-03-14 | Delphi Technologies, Inc. | Zündungssystem für ottomotoren und verfahren zum betrieb davon |
US20150340846A1 (en) * | 2014-05-21 | 2015-11-26 | Caterpillar Inc. | Detection system for determining spark voltage |
KR20180018562A (ko) * | 2015-05-14 | 2018-02-21 | 엘도르 코포레이션 에쎄.피.아. | 내연 기관용 전자 점화 시스템 |
CA2995576C (en) * | 2015-08-14 | 2024-02-20 | Board Of Trustees Of Michigan State University | Ionization detector of a coil of a spark plug by shorting the primary inductance |
US9739252B1 (en) | 2016-02-19 | 2017-08-22 | Ford Global Technologies, Llc | System and method for detecting engine knock and misfire |
JP6342026B1 (ja) | 2017-02-14 | 2018-06-13 | 三菱電機株式会社 | 内燃機関の燃焼状態検出装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5494257U (de) * | 1977-12-15 | 1979-07-04 | ||
US4738239A (en) * | 1987-07-31 | 1988-04-19 | Delco Electronics Corporation | Ignition system |
DE69031878T2 (de) * | 1989-03-14 | 1998-05-28 | Denso Corp | Zündvorrichtung mit mehrfacher Funkenzündung |
JPH04134181A (ja) | 1990-09-27 | 1992-05-08 | Mitsubishi Electric Corp | イオン電流検出装置 |
DE4409749A1 (de) | 1994-03-22 | 1995-09-28 | Bayerische Motoren Werke Ag | Verfahren zur Erkennung klopfender Verbrennung bei einer Brennkraftmaschine mit einer Hochspannungstransistorspulenzündeinrichtung |
SE507263C2 (sv) | 1995-04-05 | 1998-05-04 | Sem Ab | Sätt att utföra jonströmmätning i en förbränningsmotor där mager bränsleblandning används |
DE19524499B4 (de) * | 1995-07-05 | 2008-11-13 | Robert Bosch Gmbh | Zündanlage für eine Brennkraftmaschine |
-
1996
- 1996-11-28 DE DE19649278A patent/DE19649278A1/de not_active Withdrawn
-
1997
- 1997-09-26 US US09/319,060 patent/US6424155B1/en not_active Expired - Fee Related
- 1997-09-26 DE DE59709590T patent/DE59709590D1/de not_active Expired - Lifetime
- 1997-09-26 JP JP52411598A patent/JP2001506721A/ja not_active Ceased
- 1997-09-26 EP EP97910226A patent/EP0953109B1/de not_active Expired - Lifetime
- 1997-09-26 WO PCT/DE1997/002198 patent/WO1998023859A1/de active IP Right Grant
- 1997-09-26 KR KR10-1999-7004011A patent/KR100498797B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9823859A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0953109B1 (de) | 2003-03-19 |
US6424155B1 (en) | 2002-07-23 |
DE59709590D1 (de) | 2003-04-24 |
JP2001506721A (ja) | 2001-05-22 |
KR100498797B1 (ko) | 2005-07-01 |
DE19649278A1 (de) | 1998-06-04 |
US20020050823A1 (en) | 2002-05-02 |
WO1998023859A1 (de) | 1998-06-04 |
KR20000053088A (ko) | 2000-08-25 |
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