DE2904108A1 - IC engine electronic ignition system - uses switching of end stage via charge current meter, charge current control and driver stage, with constant ignition coil primary current - Google Patents

IC engine electronic ignition system - uses switching of end stage via charge current meter, charge current control and driver stage, with constant ignition coil primary current

Info

Publication number
DE2904108A1
DE2904108A1 DE19792904108 DE2904108A DE2904108A1 DE 2904108 A1 DE2904108 A1 DE 2904108A1 DE 19792904108 DE19792904108 DE 19792904108 DE 2904108 A DE2904108 A DE 2904108A DE 2904108 A1 DE2904108 A1 DE 2904108A1
Authority
DE
Germany
Prior art keywords
ignition
stage
charge current
ignition coil
current flow
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.)
Withdrawn
Application number
DE19792904108
Other languages
German (de)
Inventor
Richard Beuter
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.)
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Priority to DE19792904108 priority Critical patent/DE2904108A1/en
Priority to IT19647/80A priority patent/IT1129613B/en
Publication of DE2904108A1 publication Critical patent/DE2904108A1/en
Withdrawn legal-status Critical Current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
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
    • F02P9/005—Control of spark intensity, intensifying, lengthening, suppression by weakening or suppression of sparks to limit the engine speed

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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

The rotary generator controls a stage, consisting of a pulse converter and a trigger device. The latter controls the current flow in an ignition coil, and thus in an ignition pat in its secondary circuit. The system uses a charge current measuring device and controller which charges an end stage over the trigger stage to such an extent that an ignition coil primary current is kept constant independently of the charge state of an accumulator. Preferably a D/A converter and a reference voltage source is used for ignition cut-out, as a run-away protection of the engine. The protection system switches the driver stage at an adjustable speed via a comparator, in order to block the current flow time period, a signal from the charge current measuring device may be supplied to the triggering device via a second D/A converter and an amplifier.

Description

Elektronische Zündeinrichtung für BrennkraftmaschinenElectronic ignition device for internal combustion engines

Die Erfindung betrifft eine elektronische Zündeinrichtung für Brennkraftmaschinen mit einer durch eine rotierende Geberanordnung gesteuerte Stufe bestehend aus einem Impulswandler und einer Triggereinrichtung mit veränderlicher Schwellenspannung zur Regelung des Stromflusses in mindestens einer Zündspule1 in deren Sekundärstromkreis weinigstens eine Zündstrecke geschaltet ist.The invention relates to an electronic ignition device for internal combustion engines with a stage controlled by a rotating encoder arrangement consisting of a Pulse converter and a trigger device with variable threshold voltage to regulate the current flow in at least one ignition coil1 in its secondary circuit at least one ignition gap is switched.

Die herkömmlichen elektronischen Zündsysteme weisen schon zum großen Teil Spulenstromhöhenregelungen auf, jedoch keine Spulenstromflußzeitregelungen. Diese Regelung ist besonders bei mager eingestellten sowie Hybrid- und Turbo-Motoren wichtig, da über den gesamten Drehzahlbereich eine konstante Zündenergie gefordert wird. Die bisherige Zündaustastung erfolgt im wesentlichen mechanisch über Fliehkraftschalter, wobei die Zündspule sekundärseitig kurzgeschlossen wird, primärseitig allerdings weiterhin der Spulenstrom fließt und somit unzulässige Verluste verursacht.The conventional electronic ignition systems already point to the great Part of the coil current level controls, but no coil current flow time controls. This regulation is particularly useful for lean, hybrid and turbo engines important because a constant ignition energy is required over the entire speed range will. The previous ignition blanking is essentially done mechanically using a centrifugal switch, whereby the ignition coil is short-circuited on the secondary side, but on the primary side the coil current continues to flow and thus causes impermissible losses.

Aufgabe der Erfindung ist es, eine Einrichtung zu schaffen, bei der über den gesamten Drehzahlbereich von Brennkraftmaschinen eine konstante Zündspannung zur Verfügung gestellt wirds und daß zum Überdrehschutz die Zündspannung ausgetastet wird. -Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß mittels einer Ladestrommeßeinrichtung und einer Ladestromregelung über eine Treiberstufe eine Endstufe so weit aufgeschaltet wird, daß ein Zündspulen-Primärstrom unabhängig vom Lade- zustand einer Batterie konstant gehalten wird.The object of the invention is to provide a device in which A constant ignition voltage over the entire speed range of internal combustion engines is made available and that the ignition voltage is blanked for overspeeding protection will. The object is achieved according to the invention in that by means of a charging current measuring device and a charging current control via a driver stage an output stage so far switched on that an ignition coil primary current is independent of the charging State a battery is kept constant.

In weiterer Ausbildung sieht die Erfindung vor, daß zum Überdrehschutz des Motors eine Zündaustastung mittels eines ersten Digital-Analog-Wandlers und einer Referenz-Spannungsquelle über einen Komparator die Treiberstufe bei einer einstellbaren Drehzahl durchgeschaltet wird und damit die Endstufe und Zündspule stromlos werden. Schließlich sieht die Erfindung noch vor, daß zur Regelung der Stromflußzeit eine Information aus der Ladestrommeßeinrichtung über einen zweiten Digital-Analog-T:randler und einen Verstärker der Triggereinrichtung mit veränderlicher Schwellenspannung zugeführt wird, die die Stromflußzeit auf ein Verlustleistungsminimum bei maximaler Spulenenergie einstellt.In a further development, the invention provides that for over-rotation protection ignition blanking of the engine by means of a first digital-to-analog converter and a reference voltage source via a comparator, the driver stage at a adjustable speed is switched through and thus the output stage and ignition coil become de-energized. Finally, the invention also provides that to control the Current flow time information from the charging current measuring device via a second Digital-Analog-T: randler and an amplifier of the trigger device with variable Threshold voltage is supplied, which reduces the current flow time to a power loss minimum sets at maximum coil energy.

Die erfindungsgemäße Einrichtung ist in der Zeichnung in einem Ausführungsbeispiel als Blockschaltbild dargestellt.The device according to the invention is shown in the drawing in one embodiment shown as a block diagram.

Zur Ladezeitregelung wird ein Impuls der Ladestrommeßeinrichtung über einen zweiten Digital-Analog-Wandler und einen Vastärker einer Triggereinrichtung mit veränderlicher Schwellenspannung zugeführt. Diese schaltet die Treiberstufe 5 und damit die Endstufe 6 so, daß im gesamten Drehzahlbereich der Spulenstrom ein Minimum an Verlustleistung bei konstanten Zündspannungen erzeugt.To regulate the charging time, a pulse is sent from the charging current measuring device a second digital-to-analog converter and a amplifier of a trigger device supplied with variable threshold voltage. This switches the driver stage 5 and thus the output stage 6 so that in the entire speed range the coil current is on Minimum power loss generated at constant ignition voltages.

Weiterhin wird vom Impulswandler 7, der über induktive, opto-elektronische, Hall- oder Kontaktgeber 8 angesteuert wird, über einen ersten Digital-Analog-Wandler 9 ein Signal abgenommen, das in einem Komparator 10 mit einem Referenzwert 11 verglichen wird und bei einer einstellbaren Drehzahl die Treiberstufe 5 sowie die Endstufe 6 abschaltet.Furthermore, the pulse converter 7, which uses inductive, opto-electronic, Hall or contactor 8 is controlled via a first digital-to-analog converter 9 a signal is picked up, which is compared with a reference value 11 in a comparator 10 and at an adjustable speed the driver stage 5 and the output stage 6 switches off.

Der Spulenstrom sinkt damit gleichzeitig auf Null, so daß die Verluste beim Uberdrehen des Motors eliminiert sind.The coil current drops to zero at the same time, so that the losses are eliminated when the engine is over-revving.

Die temperaturkompensierte Ladestromhöhenregelung 12 garantiert über dem gesamten Arbeitsspannungs- und Temperaturbereich eine konstante Spulenstromhöhe in der Zündspule 13, wodurch auch die Zündspannung einen konstanten Wert erhält.The temperature-compensated charging current level control 12 guarantees over A constant coil current level across the entire working voltage and temperature range in the ignition coil 13, whereby the ignition voltage is also given a constant value.

Claims (3)

Patentansprüche Lyf») Elektronische Zündeinrichtung für Brennkraftmaschinen mit einer durch eine rotierende Ge »,eranordnung gesteuerte Stufe bestehend aus einem Impulswandler und einer Triggereinrichtung mit zur Regelung des Stromflusses in mindestens einer Zündspule1 in deren Sekundärstromkreis wenigstens eine Zündstrecke geschaltet ist, dadurch gekennzeichnet, daß mittels einer Ladestrommeßeinrichtung (1) und einer Ladestromregelung (12) über eine Treiberstufe (5) eine Endstufe (6) so weit aufgeschaltet wird, daß ein Zündspulen-Primärstrom unabhängig vom Ladezustand einer Batterie konstant gehalten wird. Claims Lyf ») Electronic ignition device for internal combustion engines with a stage controlled by a rotating arrangement of gears consisting of a pulse converter and a trigger device to regulate the current flow at least one ignition path in at least one ignition coil1 in its secondary circuit is switched, characterized in that by means of a charging current measuring device (1) and a charging current control (12) via a driver stage (5) an output stage (6) is switched on so far that an ignition coil primary current is independent of the state of charge a battery is kept constant. 2.) Zündeinriohtung nach Anspruch 1, dadurch gekennzeichnet daß zum tiberdrehschutz des Motors eine Zündaustastung mittels eines ersten Digitalanalogwandlers (9) und einer Referenz-Spannungsquelle (11) über einen Komparator (10) die Treiberstufe (5) bei einer einstellbaren Drehzahl durchgeschaltet wird und damit die Endstufe (6) und Zündspule (13) stromlos werden. 2.) Zündeinriohtung according to claim 1, characterized in that for Overrunning protection of the engine ignition blanking by means of a first digital analog converter (9) and a reference voltage source (11) via a comparator (10) the driver stage (5) is switched through at an adjustable speed and thus the output stage (6) and ignition coil (13) are de-energized. 3.) Zündeinrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß zur Regelung der Stromflußzeit eine Information aus der Ladestrommeßeinrichtung (1) über einen zweiten Digital-Analog-Wandler (2) und einen Verstärker (3) der Triggereinrichtung mit veränderlicher Schwellenspannung (4) zugeführt wird, die die Stromflußzeit auf ein Verlustleistungsminimum bei maximaler Spulenenergie einstellt. 3.) Ignition device according to claims 1 and 2, characterized in that that to regulate the current flow time information from the charging current measuring device (1) via a second digital-to-analog converter (2) and an amplifier (3) of the trigger device with variable threshold voltage (4) is supplied, which the current flow time on sets a minimum power loss at maximum coil energy.
DE19792904108 1979-02-03 1979-02-03 IC engine electronic ignition system - uses switching of end stage via charge current meter, charge current control and driver stage, with constant ignition coil primary current Withdrawn DE2904108A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19792904108 DE2904108A1 (en) 1979-02-03 1979-02-03 IC engine electronic ignition system - uses switching of end stage via charge current meter, charge current control and driver stage, with constant ignition coil primary current
IT19647/80A IT1129613B (en) 1979-02-03 1980-02-01 ELECTRONIC IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792904108 DE2904108A1 (en) 1979-02-03 1979-02-03 IC engine electronic ignition system - uses switching of end stage via charge current meter, charge current control and driver stage, with constant ignition coil primary current

Publications (1)

Publication Number Publication Date
DE2904108A1 true DE2904108A1 (en) 1980-08-07

Family

ID=6062078

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792904108 Withdrawn DE2904108A1 (en) 1979-02-03 1979-02-03 IC engine electronic ignition system - uses switching of end stage via charge current meter, charge current control and driver stage, with constant ignition coil primary current

Country Status (2)

Country Link
DE (1) DE2904108A1 (en)
IT (1) IT1129613B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776311A (en) * 1985-04-19 1988-10-11 Bendix Electronics S.A. Process and device for limiting the running speed of an internal combustion engine with electronic ignition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776311A (en) * 1985-04-19 1988-10-11 Bendix Electronics S.A. Process and device for limiting the running speed of an internal combustion engine with electronic ignition

Also Published As

Publication number Publication date
IT8019647A0 (en) 1980-02-01
IT1129613B (en) 1986-06-11

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