DE3043309A1 - Stopping engine of vehicle with automatic transmission - also restarting by electronic circuit controlled by switch on brake pedal - Google Patents

Stopping engine of vehicle with automatic transmission - also restarting by electronic circuit controlled by switch on brake pedal

Info

Publication number
DE3043309A1
DE3043309A1 DE19803043309 DE3043309A DE3043309A1 DE 3043309 A1 DE3043309 A1 DE 3043309A1 DE 19803043309 DE19803043309 DE 19803043309 DE 3043309 A DE3043309 A DE 3043309A DE 3043309 A1 DE3043309 A1 DE 3043309A1
Authority
DE
Germany
Prior art keywords
thyristor
engine
brake pedal
vehicle
switch
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Withdrawn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
DE19803043309
Other languages
German (de)
Inventor
Göran 7800 Freiburg Ojelid
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.)
FORMIWA FORSCHUNGS GmbH
Original Assignee
FORMIWA FORSCHUNGS 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 FORMIWA FORSCHUNGS GmbH filed Critical FORMIWA FORSCHUNGS GmbH
Priority to DE19803043309 priority Critical patent/DE3043309A1/en
Publication of DE3043309A1 publication Critical patent/DE3043309A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00Starting of engines by means of electric motors
    • F02N11/08Circuits or control means specially adapted for starting of engines
    • F02N11/0814Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F02N11/0818Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00Parameters used for control of starting apparatus
    • F02N2200/02Parameters used for control of starting apparatus said parameters being related to the engine
    • F02N2200/022Engine speed
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2200/00Parameters used for control of starting apparatus
    • F02N2200/10Parameters used for control of starting apparatus said parameters being related to driver demands or status
    • F02N2200/102Brake pedal position
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems

Abstract

The circuit gives automatic starting and stopping of the engine when the vehicle is temporarily halted, for example at a traffic light. The restarting of the engine is initiated by operation of the brake pedal to give an impulse to an electronic control circuit. By this means no movement of the ignition switch or other hand operated device is needed, and there is no risk of the vehicle rolling during the restart. In a typical circuit a threshold device (51) turns on a thyristor (50) when, after application of the brake pedal (60), the engine speed falls to the idling level for a set time. By charging a capacitor (37) this thyristor (50) turns off a conducting thyristor (13) thereby interrupting the supply to the ignition system (22), and the engine stops. To restart the brake pedal is momentarily released and then reapplied. The impulse thus set up by a switch (60) on the pedal fires a thyristor (12) in the starter motor (23) circuit. It remains in conduction until the dynamo voltage (25) rises, as the engine runs up, and biases the thyristor (12) off again.

Description

Vorrichtung zum Abstellen des Motors eines Device for stopping the engine of a

Kraftfahrzeuges mit Automatik-Getriebe Bei Kraftfahrzeugen mit Automatik-Getriebe besteht zwecks Benzineinsparung und Umweltschutz ein Bedarf an einer selbsttätigen Abstellung des Motors beim Anhalten vor Verkehrsampeln und in Staus. Motor vehicle with automatic transmission In motor vehicles with automatic transmission there is a need for an automatic in order to save gasoline and protect the environment Engine shutdown when stopping at traffic lights and in traffic jams.

Es sind bereits Anordnungen für diesen Zweck vorgeschlagen, die jedoch darunter leiden, daß beim Wiederanlassen des Motors eine zuverlässige Absicherung gegen vorzeitiges Vorwärtsrollen fehlt.Arrangements have already been proposed for this purpose, however suffer from the fact that when the engine is restarted, a reliable protection against premature rolling forward is absent.

Gemäß vorliegender Erfindung zeichnet sich eine Anordnung für selbsttätiges Abstellen des Motors eines Kraftfahrzeuges beim Anhalten vor Verkehrsampeln und dergleichen in erster Linie dadurch aus, daß zum Wiederanlassen des beim Anhalten abgestellten Motors die Betätigung des Bremspedals als Impulsgabe für eine elektronische Anlaßvorrichtung benutzt wird. Die Erfindung wird im folgenden anhand eines Beispiels gemäß beiliegender Zeichnung näher beschrieben.According to the present invention, an arrangement for automatic Switching off the engine of a motor vehicle when stopping at traffic lights and The like primarily in that to restart the when stopping turned off the engine, the operation of the brake pedal as an impulse for an electronic Starting device is used. The invention is illustrated below by means of an example described in more detail according to the accompanying drawing.

Der Thyristor 50 ist anodenseitig dem Bremslichtschalter 60 angeschlossen und dessen Gate kann über einen Trigger 51 einer mit einer Zenerdiode 52 konstant gehaltenen Spannung zugeführt werden. Der Trigger 51 läßt jedoch nur dann Strom durch, wenn die auf seiner Steuerelektrode anliegende Spannung einen bestimmten Wert unterschreitet. Triggerelemente dieser Art sind z.B.The thyristor 50 is connected to the brake light switch 60 on the anode side and its gate can be constant with a Zener diode 52 via a trigger 51 maintained voltage are supplied. The trigger 51, however, only allows current when the voltage on its control electrode reaches a certain level Value falls below. Trigger elements of this type are e.g.

unter der Bezeichnung MUS 887 bekannt und handelsüblich.known and commercially available under the name MUS 887.

Die Spannung auf der Steuerelektrode wird in Abhängigkeit der Motordrehzahl dadurch erzeugt, daß von der Zündspule 22 Impulse über einen Kondensator 57 und zwei Dioden 53, 54, einem RC-Kreis 55, 56 zugeführt werden.The voltage on the control electrode depends on the engine speed generated by the fact that the ignition coil 22 Pulses through a capacitor 57 and two diodes 53, 54, an RC circuit 55, 56 are fed.

Die Vorrichtung arbeitet wie folgt: Beim Anhalten vor einer roten Ampel oder dergl. wird das Bremspedal betätigt, um das Fahrzeug zum Stillstand zu bringen. Dabei wird auch dem Thyristor 50 anodenseitig Spannung zugeführt. Solange die Spannung auf der Steuerelektrode des Triggers 51 einen kritischen Wert übersteigt, läßt jedoch der Thyristor 50 keinen Strom durch. Erst wenn die Motordrehzahl genügend abgesunken ist und aufgrund dessen der Kondensator 56 sich durch den Regelwiderstand 55 über einen gewissen Zeitraum entsprechend entladen hat, schaltet der Trigger 51 den Thyristor 50 ein. Der Strom durch den Thyristor lädt den Kondensator 37 auf und bewirkt durch Umpolung das Abschalten deì Thyristors 13. Dies bedeutet, daß die Motorzündung 22 abgestellt wird. Wenn der Fahrer wieder den Motor anlassen will, läßt er für einen Moment das Bremspedal so weit locker, daß der Bremslichtschalter 60 abschaltet und drückt danach wieder auf das Pedal.The device works as follows: When stopping in front of a red At traffic lights or the like, the brake pedal is operated to bring the vehicle to a standstill bring. In this case, voltage is also supplied to the thyristor 50 on the anode side. So long the voltage on the control electrode of trigger 51 exceeds a critical value, however, the thyristor 50 does not pass any current. Only when the engine speed is sufficient Has dropped and due to which the capacitor 56 is through the variable resistor 55 has discharged accordingly over a certain period of time, the trigger switches 51 the thyristor 50. The current through the thyristor charges the capacitor 37 and causes the thyristor 13 to be switched off by reversing the polarity. This means that the engine ignition 22 is turned off. If the driver wants to start the engine again, he lets the brake pedal so loose for a moment that the brake light switch 60 switches off and then presses the pedal again.

Das Wiederschließen des Bremslichtkontakts verursacht einen Stromimpuls über den Kondensator 18 und schaltet damit den Thyristor 12 ein. Demzufolge läuft der Anlasser 23 an und bleibt solange eingeschaltet, bis über den Thyristor 13 die Spannung der Lichtmaschine 25 den Thyristor einschaltet. Die Einschalturig des Thyristors bewirkt über den Kondensator 15 durch Umpolung ein Abschalten des Thyristors 12. Der Anlasser 23 wird dadurch abgeschaltet und die Zündanlage wird weiterhin über den Thyristor 13 mit Strom versorgt. Die Funktion des Zündschlosses 21 bleibt von diesen Einrichtungen unberührt.Closing the brake light contact again causes a current pulse via the capacitor 18 and thus switches the thyristor 12 on. As a result, runs the starter 23 and remains switched on until the thyristor 13 the Voltage of the alternator 25 turns on the thyristor. The switching on of the thyristor causes the thyristor 12 to be switched off via the capacitor 15 by reversing the polarity. The starter 23 is thereby switched off and the ignition system continues to be over the thyristor 13 is supplied with power. The function of the ignition lock 21 remains these facilities unaffected.

In einer Variante dieser Vorrichtung kann die Spannung zum Einschalten des Thyristors 13 an Stelle von der Lichtmaschine auch von dem RC-Kreis 55, 56 genommen werden, um bei der aufgrund des Anlassens des Motors steigenden Spannung den Thyristor 13 einschalten zu lassen.In a variant of this device, the voltage can be switched on of the thyristor 13 is also taken from the RC circuit 55, 56 instead of the alternator to control the thyristor when the voltage rises due to the starting of the engine 13 switched on.

Die großen Vorteile einer Vorrichtung gemäß dieser Erfindung sind folgende: Sowohl das Abstellen als auch das Wiederanlassen des Motors erfolgt ohne jegliches zusätzliche Betätigungselement. Das Abstellen geschieht zwangsläufig, aber mit einigen Sekunden Verzögerung in Abhängigkeit des Abbremsens des Fahrzeuges sowie der auf Leerlauf absinkenden Motordrehzahl. Das Automatik-Getriebe bleibt bei diesem Vorgang unverändert in seiner Vorwärtsstellung. Beim Wiederanlassen des Motors kann durch Impulsgabe mit dem Bremspedal das Cetriebe ohne jede Gefahr in Vorwärtsstellung bleiben, da das Fahrzeug bei anspringendem Motor zwangsläufig gebremst ist.The great advantages of a device according to this invention are the following: The engine is both switched off and restarted without any additional actuator. The parking is inevitable, but with a delay of a few seconds depending on the braking of the vehicle as well as the engine speed falling to idle. The automatic transmission remains in this process unchanged in its forward position. When restarting the The motor can enter the gearbox without any danger by giving impulses with the brake pedal Stay forward position as the vehicle inevitably brakes when the engine starts is.

Im Rahmen der Erfindung liegen selbstverständlich auch alle Arten Kombinationen, bei denen das Abstellen des Motors durch einen separaten Schalter erfolgt.Of course, all types are also within the scope of the invention Combinations in which the engine can be switched off using a separate switch he follows.

Claims (1)

Patentanspruch Vorrichtung zum Abstellen des Motors eines Kraftfahrzeuges mit Automatikgetriebe, dadurch gekennzeichnet, daß zum Wiederanlassen des beim Anhalten abgestellten Motors die Betätigung des Bremspedals als Impulsgabe für eine elektronische Anlaßvorrichtung benutzt wird. Device for switching off the engine of a motor vehicle with automatic transmission, characterized in that for restarting the when stopping turned off the engine, the operation of the brake pedal as an impulse for an electronic Starting device is used.
DE19803043309 1980-11-17 1980-11-17 Stopping engine of vehicle with automatic transmission - also restarting by electronic circuit controlled by switch on brake pedal Withdrawn DE3043309A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19803043309 DE3043309A1 (en) 1980-11-17 1980-11-17 Stopping engine of vehicle with automatic transmission - also restarting by electronic circuit controlled by switch on brake pedal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803043309 DE3043309A1 (en) 1980-11-17 1980-11-17 Stopping engine of vehicle with automatic transmission - also restarting by electronic circuit controlled by switch on brake pedal

Publications (1)

Publication Number Publication Date
DE3043309A1 true DE3043309A1 (en) 1982-07-15

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Application Number Title Priority Date Filing Date
DE19803043309 Withdrawn DE3043309A1 (en) 1980-11-17 1980-11-17 Stopping engine of vehicle with automatic transmission - also restarting by electronic circuit controlled by switch on brake pedal

Country Status (1)

Country Link
DE (1) DE3043309A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246658A1 (en) * 1982-12-16 1984-06-20 Bayerische Motoren Werke AG, 8000 München Shut-off/starter device for engines of motor vehicles with automatic transmission
EP0158605A1 (en) * 1984-03-26 1985-10-16 FIAT AUTO S.p.A. A stop-start device for controlling the operation of an internal combustion engine of a vehicle provided with an automatic transmission
US5238080A (en) * 1992-03-12 1993-08-24 Fastie William G Brake pedal operated mechanism for automatically controlling speed of a vehicle
DE19903148A1 (en) * 1999-01-27 2000-04-13 Mannesmann Sachs Ag Drive system, especially for motor vehicle, has controller that only operates starter if brake actuation detection arrangement has detected operation of braking arrangement
EP1063424A1 (en) * 1999-06-21 2000-12-27 Volkswagen Aktiengesellschaft Method and resp. device for restarting the motor of a vehicle
WO2012022534A1 (en) * 2010-08-18 2012-02-23 Zf Friedrichshafen Ag Method for operating a motor vehicle using an automatic start-stop unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246658A1 (en) * 1982-12-16 1984-06-20 Bayerische Motoren Werke AG, 8000 München Shut-off/starter device for engines of motor vehicles with automatic transmission
EP0158605A1 (en) * 1984-03-26 1985-10-16 FIAT AUTO S.p.A. A stop-start device for controlling the operation of an internal combustion engine of a vehicle provided with an automatic transmission
US5238080A (en) * 1992-03-12 1993-08-24 Fastie William G Brake pedal operated mechanism for automatically controlling speed of a vehicle
DE19903148A1 (en) * 1999-01-27 2000-04-13 Mannesmann Sachs Ag Drive system, especially for motor vehicle, has controller that only operates starter if brake actuation detection arrangement has detected operation of braking arrangement
FR2788733A1 (en) * 1999-01-27 2000-07-28 Mannesmann Sachs Ag MOTOR VEHICLE DRIVE SYSTEM
EP1063424A1 (en) * 1999-06-21 2000-12-27 Volkswagen Aktiengesellschaft Method and resp. device for restarting the motor of a vehicle
DE19928373A1 (en) * 1999-06-21 2001-01-04 Volkswagen Ag Method and device for restarting the engine of a motor vehicle
WO2012022534A1 (en) * 2010-08-18 2012-02-23 Zf Friedrichshafen Ag Method for operating a motor vehicle using an automatic start-stop unit

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