EP1141542A1 - Zündanlage und zündsteuerverfahren - Google Patents
Zündanlage und zündsteuerverfahrenInfo
- Publication number
- EP1141542A1 EP1141542A1 EP99957901A EP99957901A EP1141542A1 EP 1141542 A1 EP1141542 A1 EP 1141542A1 EP 99957901 A EP99957901 A EP 99957901A EP 99957901 A EP99957901 A EP 99957901A EP 1141542 A1 EP1141542 A1 EP 1141542A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- misfire
- revolution
- ignition
- detected
- 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
-
- 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
- F02P11/00—Safety means for electric spark ignition, not otherwise provided for
- F02P11/06—Indicating unsafe conditions
Definitions
- the invention relates to an ignition system and a method for ignition control for an internal combustion engine which has a plurality of cylinders, with a separate misfire counter being provided for each cylinder.
- Ignition systems for internal combustion engines with a plurality of combustion cylinders which have an associated misfire counter for each cylinder in a control unit.
- the combustion cylinders of the internal combustion engine are ignited by ignition coils, which have a primary and secondary winding, by inductively generating a high voltage.
- the currents occurring in the secondary circuit are detected by an ignition current sensor and fed to an ignition evaluation device in a cylinder-selective manner. If the ignition current sensor detects a misfire in one of the monitored cylinders, it emits a corresponding suspension count signal to the evaluation device.
- This increases an internal misfire counter provided for the cylinder by a predetermined increment value, which is an adjustable constant counter slope, for example 2. If no misfiring is detected for the associated cylinder, the corresponding ignition exposition counter decremented by an adjustable constant decrement value, for example by 1.
- the practical application of the ignition current evaluation has shown that the dimensioning of the detection circuit has a great influence. If the detection circuit is designed in such a way that it responds early to a misfire, there is a risk that ignitions in the cylinder which have been carried out in the desired manner are also erroneously recognized as misfires. With a design of the detection circuit, in which weaker current signals in the secondary circuit of the ignition system still generate a trigger signal in the detection circuit, ignition misfires that actually occur, which are caused, for example, by a sooty spark plug, are not recognized. A certain number of false triggers that occur when successful ignitions per se are recognized as defective can be filtered out by taking measures only when the misfire counter of the relevant cylinder has reached a predetermined adjustable counter threshold value.
- the counter threshold value must not be too high or the incline with which the counter is increased when a misfire is detected, so that a sufficiently fast reaction is guaranteed in the event of several misfires occurring in succession, in particular for the protection of the catalytic converter. Since the misfire count Since such a conventional ignition system has a constant meter slope, a compromise must be found in the determination of the meter threshold value between a quick reaction for the catalyst protection if several cylinders fail at the same time and a statistical filtering out when evaluating possibly mistakenly recognized, individual misfires on the cylinder. The counter threshold must therefore be high enough on the one hand not to be exceeded by erroneous misfire and on the other hand low enough to ensure a quick response.
- Such conventional ignition systems have the disadvantage that they do not take into account how many misfires have occurred in the various cylinders of the internal combustion engine, for example in one row of cylinders. If misfires occur simultaneously in several cylinders during one revolution, the ignition system must react particularly quickly. In the known ignition system, the individual misfire counters of the cylinders are increased independently of the misfire behavior of other cylinders. If ignition misfires occur in several cylinders at the same time, this can result in the ignition system reaction being too slow.
- the ignition system according to the invention with the features of claim 1 and the corresponding ignition control method with the Features of claim 8 have the advantage that, when evaluating the ignition misfire behavior of a cylinder, the misfires recorded in the other cylinders are also taken into account, and a rapid reaction of the ignition system is ensured while misfiring occurs in different cylinders.
- the ignition system has a detection device for detecting the misfires occurring in each cylinder and a calculation device which has at least one misfire counter for each individual cylinder, the misfire counter depending on a misfire detected in the associated cylinder during engine rotation the total number of misfires of all cylinders detected in the previous engine revolution is increased.
- misfiring counter of a cylinder is no longer increased as before with a constant increment value when ignition misfiring is detected, but with a variable increment value which is the higher the more cylinders one during the previous engine revolution Misfiring had.
- the calculation device emits an emergency measure control signal to an emergency measure control device for initiating an emergency measure when an adjustable ignition threshold counter is exceeded for this cylinder.
- the emergency measure process consists in switching off the injection of the corresponding cylinder.
- the ignition misfire pattern is increased by a variable increment value in the event of a misfire detected in one revolution, which is calculated by multiplying the total number of misfires recorded in the previous revolution in all cylinders with a constant, adjustable initial increment factor.
- the calculation device decrements the misfiring counter of a cylinder if the detection device does not detect any misfiring for this cylinder.
- the misfire counter is adjusted by a constant, adjustable value decremented if no misfire is detected by the detection device for this cylinder.
- the single figure shows an ignition system according to the invention for internal combustion engines, which has a plurality of combustion cylinders (only one ignition system for two combustion cylinders is shown in the figure, but the number of combustion cylinders can be increased as desired).
- the combustion cylinders, not shown, are each ignited by spark plugs 1, 2.
- the spark plugs 1, 2 are connected via lines 3, 4 to secondary windings 5, 6, which belong to ignition coils 7, 8.
- the ignition coils 7, 8 each have a primary winding 9, 10, which is inductively coupled to the associated secondary winding 5, 6.
- the secondary windings 5, 6 are connected to a node 13 via lines 11, 12.
- the primary windings 9, 10 of the ignition coils 7, 8 are connected to a node 16 via lines 14, 15.
- a battery voltage U B is present at node 16 via a line 17.
- the node 13 in the secondary circuit of the ignition system is connected to a detection device 19 via a current detection line 18.
- the detection device 19 is connected via at least one ignition drop count signal line 20 to a calculation device 21 which has at least one ignition drop counter ZI, Z2,..., Zn for each cylinder of the internal combustion engine.
- the calculation device 21 is connected to an emergency control device 23 via at least one emergency measure control line 22.
- the calculation device 21 controls switching stages 26, 27 via control lines 24, 25, which are connected via lines 28, 29 to the primary windings 9, 10 of the ignition coils 7, 8.
- the switching stages 26, 27 are, for example, transistors.
- an ignition current flows via the associated spark plug 1, 2 and is passed via the ignition current detection line 18 through the detection device.
- direction 19 is detected by means of an ignition current sensor. If an ignition misfire occurs, a sufficiently high ignition current does not flow at the associated spark plug, so that the detection device 19 can recognize cylinder-selectively whether an ignition misfire is present on a specific cylinder. If the detection device detects that a misfire has occurred, it outputs an ignition misfire detection signal via line 20 to the calculation device 21.
- the calculator 21 increments the internal misfire count associated with the corresponding cylinder by a variable increment value when it receives a misfire detection signal for the corresponding cylinder via line 20.
- the increment value is not constant, but depends on the total number of misfires recorded for all cylinders in the previous revolution of the internal combustion engine.
- the calculation device 21 has an internal storage device 24, in which the number of misfires recorded during the last engine revolution are stored.
- the variable increment value is calculated by multiplying the stored total number of misfires in the previous engine revolution by a constant, adjustable initial increment factor.
- the initial increment factor is 2 per misfire detected and are detected by the detection during a first engine revolution.
- Solution device 19 detected three misfires on three different cylinders, the increment value is increased to 6. If a misfire is detected on one of the cylinders in the next engine revolution, its internal misfire counter is incremented with this increased increment value.
- This type of evaluation also evaluates the number of misfires per engine revolution. This also takes into account, for example, that several misfires per revolution are more damaging than misfires that are distributed over different revolutions. If, for example, a complete cylinder bank of an engine fails, for example six cylinders, the variable increment value increases significantly to, for example, 12 with an initial increment factor of 2, so that the preprogrammed counter threshold value is reached after a few successive misfires by a corresponding emergency measure initiate the emergency measure control device 23. As a result, the reaction speed of the ignition system is significantly increased if a plurality of misfires occurs simultaneously on different cylinders, so that, in particular, a measure for protecting the catalytic converter can be initiated quickly.
- the calculation device 21 transmits an emergency action control signal to the emergency action control device 21 via the emergency action control line, which signals a corresponding one Initiates emergency measure.
- This emergency measure can consist, for example, in that the injection for the relevant cylinder is switched off.
- the ignition system In a preferred embodiment of the ignition system according to the invention, several internal misfire counters are provided for each cylinder for different emergency measures.
- the respective initial increment factors and the counter threshold values can be set separately for each of the different ignition failure counters. This makes it possible to carry out various measures depending on the misfires determined in the previous revolution.
- the misfires for a large number of previous revolutions are stored in the internal memory device 24 of the calculation device 21, so that they can be evaluated by the calculation device 21. This makes it possible to detect misfires occurring periodically on the cylinders and to initiate appropriate measures.
- the calculation device 21 can statistically evaluate the ignition suspension behavior of a cylinder over a longer period of time and take appropriate measures. For example, the calculation device can emit a warning signal when the statistical evaluation the misfire on a cylinder results in increasing spark plug wear.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19860452A DE19860452A1 (de) | 1998-12-28 | 1998-12-28 | Zündanlage und Zündsteuerverfahren |
DE19860452 | 1998-12-28 | ||
PCT/DE1999/003301 WO2000039456A1 (de) | 1998-12-28 | 1999-10-14 | Zündanlage und zündsteuerverfahren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1141542A1 true EP1141542A1 (de) | 2001-10-10 |
EP1141542B1 EP1141542B1 (de) | 2007-01-24 |
Family
ID=7892941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99957901A Expired - Lifetime EP1141542B1 (de) | 1998-12-28 | 1999-10-14 | Zündanlage und zündsteuerverfahren |
Country Status (6)
Country | Link |
---|---|
US (1) | US6736113B1 (de) |
EP (1) | EP1141542B1 (de) |
JP (1) | JP4469505B2 (de) |
KR (1) | KR100620266B1 (de) |
DE (2) | DE19860452A1 (de) |
WO (1) | WO2000039456A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006011886A1 (de) * | 2006-03-15 | 2007-09-20 | Bayerische Motoren Werke Ag | Vorrichtung und Verfahren zur Bestimmung des Verschleiß einer Zündkerze einer Brennkraftmaschine |
FR2903774B1 (fr) * | 2006-07-17 | 2008-09-05 | Renault Sas | Procede de validation d'un diagnostic de fontionnement d'un dispositif. |
JP4866944B2 (ja) * | 2009-08-05 | 2012-02-01 | 三井造船株式会社 | レシプロエンジン回転数算出装置及びレシプロエンジン制御装置 |
GB2496207B (en) * | 2011-11-07 | 2018-08-22 | Ec Power As | Engine generator |
JP6264325B2 (ja) * | 2015-06-05 | 2018-01-24 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
EP3578804A1 (de) | 2018-06-07 | 2019-12-11 | Caterpillar Energy Solutions GmbH | Zündkerzenelektroden-verschleissratenbestimmung für einen fremdgezündeten verbrennungsmotor |
EP3587792A1 (de) * | 2018-06-27 | 2020-01-01 | Caterpillar Energy Solutions GmbH | Dynamische zündenergiesteuerung einer zündkerze in einer brennkraftmaschine |
US11703006B2 (en) * | 2019-11-26 | 2023-07-18 | Ford Global Technologies, Llc | Systems and methods for diagnosing air and fuel offsets in a prechamber |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4635590A (en) * | 1983-04-28 | 1987-01-13 | Anthony Gerace | Internal combustion engine and operating cycle therefor |
AT388780B (de) * | 1987-09-09 | 1989-08-25 | Jenbacher Werke Ag | Einrichtung zur erkennung von zuend- und entflammaussetzern |
EP0437212B1 (de) * | 1990-01-09 | 1997-03-19 | Unisia Jecs Corporation | Verfahren und Vorrichtung zur Detektierung eines Verbrennungsdefekts in einem Zylinder einer inneren Brennkraftmaschine |
KR950004612B1 (ko) * | 1990-06-25 | 1995-05-03 | 미쓰비시덴키가부시키가이샤 | 내연기관 실화검출방법 및 장치 |
DE4116642C2 (de) * | 1990-08-25 | 2000-05-11 | Bosch Gmbh Robert | Zündanlage einer Brennkraftmaschine mit einer Überwachungsschaltung zum Erkennen von Zündaussetzern |
JP2753412B2 (ja) * | 1992-02-04 | 1998-05-20 | 三菱電機株式会社 | 内燃機関失火判定装置 |
JP3675049B2 (ja) | 1996-08-09 | 2005-07-27 | 株式会社デンソー | 内燃機関の失火検出装置 |
JP3743073B2 (ja) * | 1996-10-17 | 2006-02-08 | 株式会社デンソー | 内燃機関の失火検出装置 |
JP3477016B2 (ja) * | 1997-02-19 | 2003-12-10 | 株式会社日立製作所 | 内燃機関の燃焼状態検出装置 |
DE19913746C2 (de) * | 1999-03-26 | 2001-05-31 | Bayerische Motoren Werke Ag | Verfahren zur Erkennung von abgasverschlechternden und katalysatorschädigenden Aussetzern bei Verbrennungsmotoren |
-
1998
- 1998-12-28 DE DE19860452A patent/DE19860452A1/de not_active Withdrawn
-
1999
- 1999-10-14 US US09/869,491 patent/US6736113B1/en not_active Expired - Fee Related
- 1999-10-14 DE DE59914173T patent/DE59914173D1/de not_active Expired - Lifetime
- 1999-10-14 KR KR1020017008199A patent/KR100620266B1/ko not_active IP Right Cessation
- 1999-10-14 JP JP2000591326A patent/JP4469505B2/ja not_active Expired - Lifetime
- 1999-10-14 WO PCT/DE1999/003301 patent/WO2000039456A1/de active IP Right Grant
- 1999-10-14 EP EP99957901A patent/EP1141542B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0039456A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59914173D1 (de) | 2007-03-15 |
EP1141542B1 (de) | 2007-01-24 |
KR100620266B1 (ko) | 2006-09-13 |
KR20010099976A (ko) | 2001-11-09 |
US6736113B1 (en) | 2004-05-18 |
JP2002533616A (ja) | 2002-10-08 |
JP4469505B2 (ja) | 2010-05-26 |
DE19860452A1 (de) | 2000-06-29 |
WO2000039456A1 (de) | 2000-07-06 |
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