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WO1993012340A1 - Procede de reglage de la duree de fermeture - Google Patents

Procede de reglage de la duree de fermeture Download PDF

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Publication number
WO1993012340A1
WO1993012340A1 PCT/DE1992/001047 DE9201047W WO9312340A1 WO 1993012340 A1 WO1993012340 A1 WO 1993012340A1 DE 9201047 W DE9201047 W DE 9201047W WO 9312340 A1 WO9312340 A1 WO 9312340A1
Authority
WO
WIPO (PCT)
Prior art keywords
closing time
comparator
ignition
time
microprocessor
Prior art date
Application number
PCT/DE1992/001047
Other languages
German (de)
English (en)
Inventor
Ulrich Koelle
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to JP51051993A priority Critical patent/JP3288376B2/ja
Priority to EP93901588A priority patent/EP0617757B1/fr
Priority to DE59207208T priority patent/DE59207208D1/de
Publication of WO1993012340A1 publication Critical patent/WO1993012340A1/fr

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

Definitions

  • the invention is based on a method for controlling the closing time in ignition systems for internal combustion engines according to the type of the main claim.
  • a closing time control for internal combustion engines is already known from DE-PS 34 02 537, in which, however, two comparators and two reference marks are used to determine the ignition timing and for closing time control.
  • a closing time control is carried out on the basis of monitoring the ignition coil current with two comparators, one of which responds when 80% of the required ignition coil current is reached and the other responds at 100%. It is disadvantageous that the time between reaching the individual comparator thresholds is measured continuously and the charging time must be calculated from these measured times.
  • the hardware required here (80% and 100% comparator) and the special demands on the processor, as well as the required software make the solution shown relatively expensive.
  • a method for closing time adaptation is known from the unpublished patent application DE-41 19 570, a comparator being provided which compares the ignition coil current with a desired value and detects the output level of the comparator at the time of ignition.
  • the method according to the invention with the characterizing features of the main claim has the advantage that the optimal closing time is determined by the time measurement of the output closing time and the time measurement until the comparator responds and is output during the subsequent ignition.
  • the measures listed in the subclaims enable advantageous further developments and improvements of the method specified in the main claim. It is particularly advantageous that the comparison voltage supplied to the comparator can be set to a predetermined current value of the charge curve of the respective ignition coil, and the method can thus be set to different engine operating points. It is also advantageous to trigger positive ignition a predetermined time after the comparator has responded, as a result of which there is no unnecessary stress on the high-voltage parts and no unnecessarily large power loss. Ultimately, this method has the advantage of ensuring, by monitoring the comparator output, that a predetermined minimum closing time is guaranteed. An additional diagnosis can be carried out here using a plausibility check.
  • This minimum closing time is checked so that, for example, a short circuit is recognized and the ignition and injection for the corresponding cylinder are switched off to protect the catalytic converter and the ignition end stages.
  • the closing time at the end of operation may be accessed for faster closing time determination. This process is advantageously carried out as a function of the engine temperature T, so that the closing time at the end of operation is then the closing time when new
  • Jtart is used if the engine temperature at restart T motn is only a predeterminable value of the engine temperature at the end of operation
  • FIG. 1 shows a circuit arrangement for detecting the ignition coil current
  • FIG. 2 shows the time sequences for determining the closing time
  • FIG. 3 shows a flow chart for determining the closing time
  • FIG. 4 shows the ignition coil current for two closing times as a function of the engine temperature.
  • FIG. 1 shows the microprocessor 1 of a control device (not shown) for the ignition output stages of the ignition system of an internal combustion engine.
  • This microprocessor 1 is connected, inter alia, to the base of an ignition transistor 3 via a connecting line.
  • the ignition transistor 3 On the collector side, the ignition transistor 3 is connected via the primary winding of an ignition coil 4 to a battery voltage U ⁇ , for example a vehicle battery, not shown.
  • the ignition coil 4 is connected on the one hand to the battery voltage U " and on the other hand to a spark plug 5.
  • the ignition transistor 3 is connected to the inverting input of a comparator 6 and in parallel to it via a measuring resistor 7 to ground.
  • the non-inverting input the comparator 6 is connected via a voltage divider formed from the resistors 8 and 9 to ground on the one hand and to a supply voltage U, which is supplied by a voltage stabilizer, not shown, via the voltage divider, a comparison voltage U is set at the non-inverting input of the comparator 6. It is entirely possible to use a comparator - as shown in FIG. 1 - with a plurality of separately switchable voltage dividers 8a and 8b or 9a and 9b, with different comparison voltages U " or U via switching elements 11a from the microprocessor via a connection 10a or 10b or 11b on the comparator 6 be placed. Depending on what kind of comparator it is, that is to say at what percentage (for example 90% ...
  • the comparative value U reached the comparator switches, time or a fraction thereof defined from the start of the closing time to the end of the closing time.
  • the further output stages of the ignition system - only indicated here - are connected in such a way that the emitters of the individual ignition transistors are combined. In internal combustion engines with a closing angle overlap, the cylinders which overlap in their closing angle would have to be evaluated separately by a further evaluation circuit with elements 6, 7, 8 and 9.
  • the output level IP of the comparator 6 is fed to the microprocessor 1.
  • FIG. 2 shows the signal curves over time, which are evaluated by the microprocessor.
  • the upper signal curve in this figure shows the signal ts for controlling the ignition stage 3 from the microprocessor 1 via the connection 2.
  • the microprocessor switches the signal ts from 0 to 1, as a result of which the start of the closing time is realized.
  • This time T1 is recorded in the microprocessor 1 and stored as the base time from which the time for the various events is measured.
  • the microprocessor 1 also controls the end of the closing time T2 at which the ignition takes place.
  • the time T n ⁇ marked between the beginning of the closing time Tl and the end of the closing time T2 represents a minimum closing time, it serves for the detection of short circuits and is constant.
  • the lower signal sequence in FIG. 2 shows the output level IP of the comparator 6, the output of the comparator switching from 0 to 1 due to the interconnection when the ignition coil current specified by the voltage U has been reached.
  • a time t4 begins to run, at the end of which the closing time is ended by the microprocessor 1 in any case.
  • FIG. 3 shows the flowchart for processing the recorded times, as shown in FIG. 2.
  • the microprocessor 1 calculates the ignition timing on the basis of the detected parameters such as speed, temperature and pressure. For each ignition cycle of the internal combustion engine, the microprocessor 1 monitors the signal sequence ts for controlling the ignition output stage and the output level of the comparator IP in a step 20. In a subsequent query 21, it is checked whether the start of a closing time T1 exists. If this is the case, the yes output of query 21 leads to a work step 22 in which the closing time begins. T1 is buffered as the base time for later calculations. Cann't. If the start of the closing time T1 is determined, the no output of the query 21 leads to the query 23.
  • this query 23 initially carries out a query 33.
  • the query 24 it is now checked whether the comparator 6 has responded at all or had, ie a query is made as to whether the time T3 was reached at which the comparator 8 responds.
  • the comparator is triggered at the point in time when an energy is stored in the ignition coil which corresponds to the predetermined comparison value U.
  • the yes output of query 24, that is to say the comparator had responded, results in a subsequent step 25 due to the temporarily stored time for the start of the closing time. Tl and the time for the comparator T3 to respond, the determination of the closing time SZn for the subsequent ignition cycle in this ignition coil, where SZn T3 - Tl.
  • Such a case can also occur, for example, when the internal combustion engine is idling and the ignition coil energy actually required is less than in the partial load or full load range.
  • the query 26 was answered with yes, ie the actual closing time (T2-T1) was greater than the desired closing time (SZ)
  • the subsequent desired optimal closing time SZn is determined in a work step 28 by the closing time that is output (T2 - Tl)
  • the correction value K is a value determined in the application for each engine type, which ensures that the specified value of the ignition coil current is just reached with the closing time of the subsequent ignition.
  • the correction value K is not added all at once, but is broken down into several parts and added step by step to the measured actual closing time. If query 23 was answered with no for time T2, ie no ignition event could be determined, a query 29 checks whether an ascending flank (ie a response of the comparator) occurs in the signal sequence IP. If this is the case, the response time T3 of the comparator 6 is temporarily stored in step 30. In the following query 31, it is checked whether the response time T3 of the comparator 6 is less than a minimum closing time T__. A yes to this query 31 results
  • step 32 DIA for step 32, in which this situation is interpreted as a short circuit in the ignition system and the ignition and injection are accordingly switched off in the cylinder concerned.
  • the yes output of this query leads to a query 37 which checks whether a time t4 started by the comparator 6 and which represents a maximum permissible closing time SZ max has expired. If this is the case, the closing time is ended by the microprocessor 1 in a work step 38 at time T4 and a positive ignition is triggered. This measure ensures that the high-voltage parts are not unnecessarily stressed. From the no output of query 36 and query 37 and 31 as well as from work steps 38, 32, 35, 25, 28 and 27, a connection leads to a work step 39. In this work step 39, the times T1 and T3 deleted. Then, in step 40, the closing time determination for the next ignition cycle is started again. This method just described enables the closing time to be determined very precisely, since there is no unnecessary conversion to the angular plane, but the measured times are used directly by the microprocessor to determine the closing time.
  • this method offers the possibility of reacting very well to dynamics.
  • the microprocessor detects a dynamic that starts after the start of the closing time and thus changes the closing time as a discrepancy between the desired closing time SZ and the actually issued closing time (T2-T1) and adjusts the closing time of the subsequent ignition cycle SZn according to the measured times. An error in the determination of the closing time is thus avoided even under changing operating conditions, such as dynamics.
  • FIG. 4 shows the dependence of the rise in the ignition coil current on the temperature.
  • curve A shows the increase in the current in the ignition coil at low temperature ⁇ .
  • curve B shows the increase in the ignition coil current at a higher temperature I.

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  • 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 procédé de réglage de la durée de fermeture de systèmes d'allumage de moteurs à combustion interne utilise un microprocesseur (1) pour amorcer au moins un étage final d'allumage. Selon ce procédé, le courant est détecté par la bobine d'allumage et comparé avec une valeur de comparaison prédéterminée (Uv). Le microprocesseur (1) détecte le temps écoulé entre le début (T1) de la durée de fermeture et le moment où la valeur de comparaison (Uv) est atteinte, ou la fin (T2) de la durée de fermeture, et détermine sur la base de ces temps détectés (T1, T2, T3) la durée de fermeture (SZn) du cycle d'allumage suivant.
PCT/DE1992/001047 1991-12-18 1992-12-15 Procede de reglage de la duree de fermeture WO1993012340A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP51051993A JP3288376B2 (ja) 1991-12-18 1992-12-15 閉成時間の制御方法
EP93901588A EP0617757B1 (fr) 1991-12-18 1992-12-15 Procede de reglage de la duree de fermeture
DE59207208T DE59207208D1 (de) 1991-12-18 1992-12-15 Verfahren zur schliesszeitregelung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141698A DE4141698A1 (de) 1991-12-18 1991-12-18 Verfahren zur schliesszeitregelung
DEP4141698.8 1991-12-18

Publications (1)

Publication Number Publication Date
WO1993012340A1 true WO1993012340A1 (fr) 1993-06-24

Family

ID=6447308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/001047 WO1993012340A1 (fr) 1991-12-18 1992-12-15 Procede de reglage de la duree de fermeture

Country Status (4)

Country Link
EP (1) EP0617757B1 (fr)
JP (1) JP3288376B2 (fr)
DE (2) DE4141698A1 (fr)
WO (1) WO1993012340A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2325988A (en) * 1997-06-02 1998-12-09 Ford Motor Co Ignition coil monitoring arrangement
US9133511B2 (en) 2000-10-06 2015-09-15 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US9175342B2 (en) 2007-10-19 2015-11-03 The Trustees Of Columbia University In The City Of New York Synthesis of cleavable fluorescent nucleotides as reversible terminators for DNA sequencing by synthesis
US9255292B2 (en) 2005-10-31 2016-02-09 The Trustees Of Columbia University In The City Of New York Synthesis of four-color 3′-O-allyl modified photocleavable fluorescent nucleotides and related methods
US9297042B2 (en) 2005-10-31 2016-03-29 The Trustees Of Columbia University In The City Of New York Chemically cleavable 3′-O-allyl-dNTP-allyl-fluorophore fluorescent nucleotide analogues and related methods
US9528151B2 (en) 2006-12-01 2016-12-27 The Trustees Of Columbia University In The City Of New York Four-color DNA sequencing by synthesis using cleavable fluorescent nucleotide reversible terminators
US9708358B2 (en) 2000-10-06 2017-07-18 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10260094B2 (en) 2007-10-19 2019-04-16 The Trustees Of Columbia University In The City Of New York DNA sequencing with non-fluorescent nucleotide reversible terminators and cleavable label modified nucleotide terminators

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10152171B4 (de) 2001-10-23 2004-05-06 Robert Bosch Gmbh Vorrichtung zur Zündung einer Brennkraftmaschine
DE10320162B3 (de) * 2003-05-06 2004-10-14 Bayerische Motoren Werke Ag Zündungssteuerungsverfahren und -vorrichtung für Brennkraftmaschinen in Kraftfahrzeugen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026627A1 (fr) * 1979-09-27 1981-04-08 Nippondenso Co., Ltd. Systèmes d'allumage sans contact pour moteurs à combustion interne
DE3447341A1 (de) * 1984-12-24 1986-06-26 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur schliesswinkelregelung einer fremdgezuendeten brennkraftmaschine
US4933861A (en) * 1988-10-03 1990-06-12 Ford Motor Company Ignition system with feedback controlled dwell
WO1992017702A1 (fr) * 1991-03-30 1992-10-15 Robert Bosch Gmbh Procede d'adaptation du temps de fermeture de systemes d'allumage de moteurs a combustion interne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026627A1 (fr) * 1979-09-27 1981-04-08 Nippondenso Co., Ltd. Systèmes d'allumage sans contact pour moteurs à combustion interne
DE3447341A1 (de) * 1984-12-24 1986-06-26 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur schliesswinkelregelung einer fremdgezuendeten brennkraftmaschine
US4933861A (en) * 1988-10-03 1990-06-12 Ford Motor Company Ignition system with feedback controlled dwell
WO1992017702A1 (fr) * 1991-03-30 1992-10-15 Robert Bosch Gmbh Procede d'adaptation du temps de fermeture de systemes d'allumage de moteurs a combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 6, no. 36 (M-115)5. März 1982 *

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2325988A (en) * 1997-06-02 1998-12-09 Ford Motor Co Ignition coil monitoring arrangement
US10407458B2 (en) 2000-10-06 2019-09-10 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10669577B2 (en) 2000-10-06 2020-06-02 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10669582B2 (en) 2000-10-06 2020-06-02 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10428380B2 (en) 2000-10-06 2019-10-01 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10662472B2 (en) 2000-10-06 2020-05-26 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US9708358B2 (en) 2000-10-06 2017-07-18 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US9719139B2 (en) 2000-10-06 2017-08-01 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US9718852B2 (en) 2000-10-06 2017-08-01 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US9725480B2 (en) 2000-10-06 2017-08-08 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US9868985B2 (en) 2000-10-06 2018-01-16 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10648028B2 (en) 2000-10-06 2020-05-12 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US9133511B2 (en) 2000-10-06 2015-09-15 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10633700B2 (en) 2000-10-06 2020-04-28 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10435742B2 (en) 2000-10-06 2019-10-08 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10407459B2 (en) 2000-10-06 2019-09-10 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10457984B2 (en) 2000-10-06 2019-10-29 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10570446B2 (en) 2000-10-06 2020-02-25 The Trustee Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US10577652B2 (en) 2000-10-06 2020-03-03 The Trustees Of Columbia University In The City Of New York Massive parallel method for decoding DNA and RNA
US9297042B2 (en) 2005-10-31 2016-03-29 The Trustees Of Columbia University In The City Of New York Chemically cleavable 3′-O-allyl-dNTP-allyl-fluorophore fluorescent nucleotide analogues and related methods
US9255292B2 (en) 2005-10-31 2016-02-09 The Trustees Of Columbia University In The City Of New York Synthesis of four-color 3′-O-allyl modified photocleavable fluorescent nucleotides and related methods
US9528151B2 (en) 2006-12-01 2016-12-27 The Trustees Of Columbia University In The City Of New York Four-color DNA sequencing by synthesis using cleavable fluorescent nucleotide reversible terminators
US11098353B2 (en) 2006-12-01 2021-08-24 The Trustees Of Columbia University In The City Of New York Four-color DNA sequencing by synthesis using cleavable fluorescent nucleotide reversible terminators
US11939631B2 (en) 2006-12-01 2024-03-26 The Trustees Of Columbia University In The City Of New York Four-color DNA sequencing by synthesis using cleavable fluorescent nucleotide reversible terminators
US9175342B2 (en) 2007-10-19 2015-11-03 The Trustees Of Columbia University In The City Of New York Synthesis of cleavable fluorescent nucleotides as reversible terminators for DNA sequencing by synthesis
US10260094B2 (en) 2007-10-19 2019-04-16 The Trustees Of Columbia University In The City Of New York DNA sequencing with non-fluorescent nucleotide reversible terminators and cleavable label modified nucleotide terminators

Also Published As

Publication number Publication date
JP3288376B2 (ja) 2002-06-04
DE4141698A1 (de) 1993-07-01
DE59207208D1 (de) 1996-10-24
EP0617757B1 (fr) 1996-09-18
EP0617757A1 (fr) 1994-10-05
JPH07502093A (ja) 1995-03-02

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