EP2079924A1 - Starter for internal combustion engines having relief switch - Google Patents

Starter for internal combustion engines having relief switch

Info

Publication number
EP2079924A1
EP2079924A1 EP07802556A EP07802556A EP2079924A1 EP 2079924 A1 EP2079924 A1 EP 2079924A1 EP 07802556 A EP07802556 A EP 07802556A EP 07802556 A EP07802556 A EP 07802556A EP 2079924 A1 EP2079924 A1 EP 2079924A1
Authority
EP
European Patent Office
Prior art keywords
switch
starter
relay
closed
relay 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Withdrawn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
EP07802556A
Other languages
German (de)
French (fr)
Inventor
Klaus Heyers
Jie Ge
Apostolos Tsakiris
Jochen Heusel
Martin Neuburger
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.)
Robert Bosch GmbH
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
Publication of EP2079924A1 publication Critical patent/EP2079924A1/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Withdrawn legal-status Critical Current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
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/067—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement the starter comprising an electro-magnetically actuated lever

Definitions

  • the invention relates to a starter for starting an internal combustion engine according to the preamble of patent claim 1.
  • Pinion starters include a DC motor with a pinion that engages a ring gear of the internal combustion engine and rotates the internal combustion engine at a start request.
  • the sprocket of the internal combustion engine is located i. d.
  • known pinion starters include a so-called engagement relay that attracts an engagement lever that latches the pinion into the ring gear of the internal combustion engine. As soon as the engagement relay has attracted, a main current path is automatically closed, which supplies the starter motor with electrical power. This will start the actual cranking process.
  • An essential aspect of the invention is to provide another switch parallel to the relay switch of the starter relay and to control this switch so that it is closed at least at the time in which the relay switch opens and / or closes.
  • the parallel switch virtually forms a bypass and serves to relieve the relay switch. Closing the bypass switch causes the voltage applied to the relay switch to be reduced, thus reducing the risk of relay firing. The life of the starter can thus be significantly extended.
  • the field strengths occurring at the contacts of the relay switch are particularly high when the relay switch opens. It is therefore proposed to keep the bypass switch closed at least at the time at which the relay switch opens. Preferably, the bypass switch is closed every time the relay switch changes state.
  • the bypass switch is closed shortly before a change in state of the relay switch and shortly thereafter reopened.
  • the voltage drop across the relay switch is reduced at least at the time of a switching operation.
  • the bypass switch is also closed during the entire period in which the relay switch is closed.
  • the current to supply the starter motor flows through both the main current path and the relay switch as well as the bypass path and the bypass switch to the starter motor.
  • the bypass switch is preferably connected to a supply potential, such as the battery voltage of the vehicle electrical system, and to the starter motor.
  • the bypass switch is preferably a transistor, in particular a MOS transistor.
  • the starter according to the invention is preferably a so-called pinion starter.
  • the invention can also be used.
  • FIG. 1 shows a starter for automotive internal combustion engines with a bypass switch.
  • Fig. 2a shows the switching state of the relay switch
  • Fig. 2b shows the switching state of the bypass switch.
  • Fig. 1 shows a schematic representation of a pinion starter for starting an internal combustion engine.
  • the pinion starter comprises a starter relay 1, by means of which a main current path 7 can be closed or opened to the starter motor 4.
  • the control line 8 of the starter relay 1 is energized, so that the relay 1 attracts.
  • an engagement lever 11 is actuated, which spins the pinion 5 in a ring gear 6 of the motor vehicle engine (not shown).
  • the relay switch 2 closes automatically, and the starter motor 4 is supplied with electric power. As a result, the actual starting operation of the vehicle internal combustion engine is started.
  • an additional switch 9 is provided here, which is arranged parallel to the relay switch 2 and which is operated so that it is closed at least when switching the relay switch 2 and / or.
  • the additional switch 9 virtually forms a bypass to the relay switch 2 and serves to relieve the relay switch 2 in a switching operation.
  • the bypass switch 9 is supply side connected to the mains voltage U ßat and the ground side with a supply-side node of the starter motor 4.
  • an electronic unit 10 such as a control unit, is provided for driving the bypass switch 9.
  • Fig. 2a shows two switching cycles of the relay switch 2, wherein the state “low” the open position and “high” corresponds to the closed position of the relay switch 2.
  • Fig. 2b shows the switching state of the switch 9, wherein on the left of the dashed line a first mode and right of the dashed line, a second mode is shown.
  • the state “low” again corresponds to the open position and the state “high” to the closed position.
  • the switch 9 is controlled in such a way that it is closed shortly before a change of state of the relay switch 2 and shortly thereafter re-opened (see times t 0 and ti). As a result, the voltage drop across the relay switch 3 is reduced and thus reduces the risk of contact welding.
  • the parallel switch 9 is operated such that it is also switched on during the entire switch-on phase of the relay switch 2 (from t 0 to ti).
  • the switch 9 is turned on shortly before the time t 0 and turned off again shortly after the time ti. It is essential that the switch 9 is closed in a change of state of the relay switch 2.
  • the switch 9 can be realized for example as a transistor, in particular as a MOS transistor.

Abstract

The invention relates to a starter for starting of an internal combustion engine, comprising a starter relay (1) having a relay switch (2). A main current path (7) to a starter motor (4) can be opened or closed with said relay switch. The service life of the starter relay (1) can be increased considerably if a further switch (9) is provided in addition to the relay switch (1), the further switch being actuated by means of an electronic system (10) such that it is closed at least at the time at which the relay switch (2) opens and/or closes.

Description

Beschreibung description
Titeltitle
Starter für Verbrennungsmotoren mit EntlastungsschalterStarter for internal combustion engines with relief switch
Stand der TechnikState of the art
Die Erfindung betrifft einen Starter zum Starten eines Verbrennungsmotors gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a starter for starting an internal combustion engine according to the preamble of patent claim 1.
Verbrennungsmotoren heutiger Kfz werden im Allgemeinen von einem so genannten Ritzelstarter gestartet. Ritzelstarter umfassen einen Gleichstrommotor mit einem Ritzel, das in einen Zahnkranz des Verbrennungsmotors eingerückt wird und den Verbrennungsmotor bei einer Startanforderung andreht. Der Zahnkranz des Verbrennungsmotors befindet sich i. d. R. an der Kurbelwelle, Darüber hinaus umfassen bekannte Ritzelstarter ein so genanntes Einrückrelais, das einen Einrückhebel anzieht, der das Ritzel in den Zahnkranz des Verbrennungsmotors einspurt. Sobald das Einrückrelais angezogen hat, wird automatisch ein Hauptstrompfad geschlossen, der den Startermotor mit elektrischer Leistung versorgt. Dadurch wird der eigentliche Andrehvorgang gestartet.Internal combustion engines of today's motor vehicle are generally started by a so-called pinion starter. Pinion starters include a DC motor with a pinion that engages a ring gear of the internal combustion engine and rotates the internal combustion engine at a start request. The sprocket of the internal combustion engine is located i. d. On the crankshaft, moreover, known pinion starters include a so-called engagement relay that attracts an engagement lever that latches the pinion into the ring gear of the internal combustion engine. As soon as the engagement relay has attracted, a main current path is automatically closed, which supplies the starter motor with electrical power. This will start the actual cranking process.
Beim Ein- und Ausschalten des Hauptstrompfades werden die Kontakte des Relaisschalters stark beansprucht. Ursache hierfür sind die beim Schalten der induktiven Last (Elektromotor) auftretenden hohen Feldstärken, die zu einem elektrischen Überschlag führen können, wenn die Feldstärke größer ist als die Durchbruchfeldstärke. Dieser Effekt wird auch als „Relaisbrand" oder „Kontaktschweißen" bezeichnet. Bei Fahrzeugen, die für einen Start-Stopp-Betrieb ausgelegt sind, wird das Starterrelais um ein Vielfaches öfter betätigt als bei herkömmlichen Fahrzeugen. Der vorstehend beschriebene Effekt ist daher besonders kritisch und kann die Lebensdauer des Starters erheblich beeinträchtigen. Offenbarung der ErfindungWhen the main current path is switched on and off, the contacts of the relay switch are heavily stressed. This is due to the high field strengths occurring when switching the inductive load (electric motor), which can lead to an electrical flashover when the field strength is greater than the breakdown field strength. This effect is also called "relay firing" or "contact welding". For vehicles that are designed for start-stop operation, the starter relay is actuated many times more often than in conventional vehicles. The effect described above is therefore particularly critical and can significantly affect the life of the starter. Disclosure of the invention
Es ist daher die Aufgabe der vorliegenden Erfindung, einen Starter für Verbrennungsmotoren, insbesondere einen Ritzelstarter zu schaffen, der eine wesentlich höhere Lebensdauer aufweist.It is therefore the object of the present invention to provide a starter for internal combustion engines, in particular a pinion starter, which has a much longer service life.
Gelöst wird diese Aufgabe gemäß der Erfindung durch die im Patenanspruch 1 angegebenen Merkmale. Weitere Ausgestaltungen der Erfindung sind Gegenstand von Unteransprüchen.This object is achieved according to the invention by the features specified in claim 1. Further embodiments of the invention are the subject of dependent claims.
Ein wesentlicher Aspekt der Erfindung besteht darin, parallel zum Relaisschalter des Starterrelais (Einrückrelais) einen weiteren Schalter vorzusehen und diesen Schalter so anzusteuern, dass er zumindest in dem Zeitpunkt geschlossen ist, in dem der Relaisschalter öffnet und/oder schließt. Der parallele Schalter bildet dabei quasi einen Bypass und dient zur Entlastung des Relaisschalters. Das Schließen des Bypass-Schalters bewirkt, dass sich die am Relaisschalter anliegende Spannung verringert und somit die Gefahr eines Relaisbrandes reduziert wird. Die Lebensdauer des Starters kann somit wesentlich verlängert werden.An essential aspect of the invention is to provide another switch parallel to the relay switch of the starter relay and to control this switch so that it is closed at least at the time in which the relay switch opens and / or closes. The parallel switch virtually forms a bypass and serves to relieve the relay switch. Closing the bypass switch causes the voltage applied to the relay switch to be reduced, thus reducing the risk of relay firing. The life of the starter can thus be significantly extended.
Die an den Kontakten des Relaisschalters auftretenden Feldstärken sind besonders hoch, wenn der Relaisschalter öffnet. Es wird daher vorgeschlagen, den Bypass-Schalter zumindest in dem Zeitpunkt geschlossen zu halten, in dem der Relaisschalter öffnet. Vorzugsweise ist der Bypass-Schalter bei jeder Zustandsänderung des Relaisschalters geschlossen.The field strengths occurring at the contacts of the relay switch are particularly high when the relay switch opens. It is therefore proposed to keep the bypass switch closed at least at the time at which the relay switch opens. Preferably, the bypass switch is closed every time the relay switch changes state.
Gemäß einer ersten Ausführungsform der Erfindung wird der Bypass-Schalter kurz vor einer Zustandsänderung des Relaisschalters geschlossen und kurz danach wieder geöffnet. Dadurch wird die am Relaisschalter abfallende Spannung zumindest im Zeitpunkt eines Schaltvorgangs reduziert.According to a first embodiment of the invention, the bypass switch is closed shortly before a change in state of the relay switch and shortly thereafter reopened. As a result, the voltage drop across the relay switch is reduced at least at the time of a switching operation.
Gemäß einer zweiten Ausführungsform der Erfindung wird der Bypass-Schalter während der gesamten Zeitdauer, in der der Relaisschalter geschlossen ist, ebenfalls geschlossen. In diesem Fall fließt der Strom zur Versorgung des Startermotors sowohl über den Hauptstrompfad und den Relaisschalter als auch über den Nebenschlusspfad und den Bypass-Schalter zum Startermotor. Der Bypass-Schalter ist vorzugsweise mit einem Versorgungspotential, wie z.B. der Batteriespannung des Kfz-Bordnetzes, und mit dem Startermotor verbunden.According to a second embodiment of the invention, the bypass switch is also closed during the entire period in which the relay switch is closed. In this case, the current to supply the starter motor flows through both the main current path and the relay switch as well as the bypass path and the bypass switch to the starter motor. The bypass switch is preferably connected to a supply potential, such as the battery voltage of the vehicle electrical system, and to the starter motor.
Der Bypass-Schalter ist vorzugsweise ein Transistor, insbesondere ein MOS- Transistor.The bypass switch is preferably a transistor, in particular a MOS transistor.
Bei dem erfindungsgemäßen Starter handelt es sich vorzugsweise um einen so genannten Ritzelstarter. Bei anderen Startertypen mit einem Starterrelais kann die Erfindung natürlich ebenfalls eingesetzt werden.The starter according to the invention is preferably a so-called pinion starter. Of course, in other types of starters with a starter relay, the invention can also be used.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung wird nachstehend anhand der beigefügten Zeichnungen beispielhaft näher erläutert. Es zeigen:The invention will now be described by way of example with reference to the accompanying drawings. Show it:
Fig. 1 ein Starter für Kfz-Verbrennungsmotoren mit einem Bypass-Schalter;1 shows a starter for automotive internal combustion engines with a bypass switch.
Fig. 2a den Schaltzustand des Relaisschalters; undFig. 2a shows the switching state of the relay switch; and
Fig. 2b den Schaltzustand des Bypass-Schalters.Fig. 2b shows the switching state of the bypass switch.
Ausführungsformen der ErfindungEmbodiments of the invention
Fig. 1 zeigt eine schematische Darstellung eines Ritzelstarters zum Starten eines Verbrennungsmotors. Der Ritzelstarter umfasst ein ein Starterrelais 1 , mittels dessen ein Hauptstrompfad 7 zum Startermotor 4 geschlossen bzw. geöffnet werden kann. Bei einem Startwunsch (z.B. Betätigen der Zündung) wird die Steuerleitung 8 des Starter-Relais 1 bestromt, so dass das Relais 1 anzieht. Dadurch wird ein Einrückhebel 11 betätigt, der das Ritzel 5 in einen Zahnkranz 6 des Kfz-Verbrennungsmotors (nicht gezeigt) einspurt. Sobald das Ritzel 5 in den Zahnkranz 6 eingespurt ist, schließt der Relaisschalter 2 automatisch, und der Startermotor 4 wird mit elektrischer Leistung versorgt. Dadurch wird der eigentliche Andrehvorgang des Kfz-Verbrennungsmotors gestartet. Wenn der Verbrennungsmotor selbstständig läuft rückt das Ritzel 5 aus dem Zahnkranz 6 aus und der Relaisschalter 2 öffnet wieder. Beim Öffnen und Schließen des Relaisschalters 2 kann es zu hohen Feldstärken an den Schalterkontakten 3 des Relaisschalters 2 kommen, die zu einem elektrischen Überschlag (so genanntes Kontaktschweißen) führen können. Dadurch wird die Lebensdauer des Relais 1 stark beeinträchtigt.Fig. 1 shows a schematic representation of a pinion starter for starting an internal combustion engine. The pinion starter comprises a starter relay 1, by means of which a main current path 7 can be closed or opened to the starter motor 4. At a start request (eg, pressing the ignition), the control line 8 of the starter relay 1 is energized, so that the relay 1 attracts. As a result, an engagement lever 11 is actuated, which spins the pinion 5 in a ring gear 6 of the motor vehicle engine (not shown). Once the pinion 5 is meshed with the ring gear 6, the relay switch 2 closes automatically, and the starter motor 4 is supplied with electric power. As a result, the actual starting operation of the vehicle internal combustion engine is started. When the internal combustion engine is running independently, the pinion 5 moves out of the ring gear 6 and the relay switch 2 opens again. When opening and closing the relay switch 2, it can lead to high field strengths at the switch contacts 3 of the relay switch 2, which can lead to an electrical flashover (so-called contact welding). As a result, the life of the relay 1 is greatly impaired.
Um dies zu verhindern, ist hier ein zusätzlicher Schalter 9 vorgesehen, der parallel zum Relaisschalter 2 angeordnet ist und der so betrieben wird, dass er zumindest beim Ein- und/oder Ausschalten des Relaisschalters 2 geschlossen ist. Der zusätzliche Schalter 9 bildet quasi einen Bypass zum Relaisschalter 2 und dient dazu, den Relaisschalter 2 bei einem Schaltvorgang zu entlasten. Der Bypass- Schalter 9 ist versorgungsseitig mit der Netzspannung Ußat und masseseitig mit einem versorgungsseitigen Knoten des Startermotors 4 verbunden. Zum Ansteuern des Bypass-Schalters 9 ist eine Elektronik 10, wie z.B. ein Steuergerät, vorgesehen.To prevent this, an additional switch 9 is provided here, which is arranged parallel to the relay switch 2 and which is operated so that it is closed at least when switching the relay switch 2 and / or. The additional switch 9 virtually forms a bypass to the relay switch 2 and serves to relieve the relay switch 2 in a switching operation. The bypass switch 9 is supply side connected to the mains voltage U ßat and the ground side with a supply-side node of the starter motor 4. For driving the bypass switch 9, an electronic unit 10, such as a control unit, is provided.
Fig. 2a zeigt zwei Schaltzyklen des Relaisschalters 2, wobei der Zustand „low" der geöffneten Stellung und „high" der geschlossenen Stellung des Relaisschalters 2 entspricht.Fig. 2a shows two switching cycles of the relay switch 2, wherein the state "low" the open position and "high" corresponds to the closed position of the relay switch 2.
Fig. 2b zeigt den Schaltzustand des Schalters 9, wobei links der gestrichelten Linie eine erste Betriebsart und rechts der gestrichelten Linie eine zweite Betriebsart dargestellt ist. Der Zustand „low" entspricht wieder der geöffneten Stellung und der Zustand „high" der geschlossenen Stellung.Fig. 2b shows the switching state of the switch 9, wherein on the left of the dashed line a first mode and right of the dashed line, a second mode is shown. The state "low" again corresponds to the open position and the state "high" to the closed position.
In der ersten Betriebsart wird der Schalter 9 derart angesteuert, dass er jeweils kurz vor einer Zustandsänderung des Relaisschalters 2 geschlossen und kurz danach wieder geöffnet wird (siehe Zeitpunkte t0 und ti). Dadurch wird die am Relaisschalter 3 abfallende Spannung reduziert und somit die Gefahr von Kontaktschweißen verringert.In the first operating mode, the switch 9 is controlled in such a way that it is closed shortly before a change of state of the relay switch 2 and shortly thereafter re-opened (see times t 0 and ti). As a result, the voltage drop across the relay switch 3 is reduced and thus reduces the risk of contact welding.
In der zweiten Betriebsart B wird der parallele Schalter 9 derart betrieben, dass er während der gesamten Einschaltphase des Relaisschalters 2 (von t0 bis ti) ebenfalls eingeschaltet ist. Der Schalter 9 wird kurz vor dem Zeitpunkt t0 eingeschaltet und kurz nach dem Zeitpunkt ti wieder ausgeschaltet. Wesentlich ist dabei, dass der Schalter 9 bei einer Zustandsänderung des Relaisschalters 2 geschlossen ist. Der Schalter 9 kann beispielsweise als Transistor, insbesondere als MOS- Transistor realisiert sein. In the second operating mode B, the parallel switch 9 is operated such that it is also switched on during the entire switch-on phase of the relay switch 2 (from t 0 to ti). The switch 9 is turned on shortly before the time t 0 and turned off again shortly after the time ti. It is essential that the switch 9 is closed in a change of state of the relay switch 2. The switch 9 can be realized for example as a transistor, in particular as a MOS transistor.

Claims

Ansprüche claims
1. Starter zum Starten eines Verbrennungsmotors, umfassend ein Starterrelais (1 ) mit einem Relaisschalter (2), mittels dessen ein Hauptstrompfad (7) zu einem Startermotor (4) geöffnet bzw. geschlossen wird, dadurch gekennzeichnet, dass parallel zum Relaisschalter (2) ein weiterer Schalter (9) vorgesehen ist, der mittels einer Elektronik (10) so angesteuert wird, dass er zumindest in dem Zeitpunkt geschlossen ist, in dem der Relaisschalter (2) öffnet und/oder schließt.1. A starter for starting an internal combustion engine, comprising a starter relay (1) with a relay switch (2), by means of which a main current path (7) to a starter motor (4) is opened or closed, characterized in that parallel to the relay switch (2) a further switch (9) is provided, which is controlled by means of electronics (10) so that it is closed at least at the time in which the relay switch (2) opens and / or closes.
2. Starter nach Anspruch 1 , dadurch gekennzeichnet, dass der Schalter (9) zumindest in dem Zeitpunkt geschlossen ist, in dem der Relaisschalter (2) öffnet.2. A starter according to claim 1, characterized in that the switch (9) is closed at least at the time in which the relay switch (2) opens.
3. Starter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schalter (9) kurz vor einer Zustandsänderung des Relaisschalters (2) geschlossen und kurz danach wieder geöffnet wird.3. A starter according to claim 1 or 2, characterized in that the switch (9) is closed shortly before a change in state of the relay switch (2) and shortly thereafter reopened.
4. Starter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Schalter (9) während der Zeitdauer, in der der Relaisschalter (2) geschlossen ist, ebenfalls geschlossen ist.4. Starter according to claim 1 or 2, characterized in that the switch (9) during the period in which the relay switch (2) is closed, is also closed.
5. Starter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schalter (9) mit einem Versorgungspotential und einem versorgungsseitigem Knoten des Startermotors (4) verbunden ist.5. Starter according to one of the preceding claims, characterized in that the switch (9) is connected to a supply potential and a supply-side node of the starter motor (4).
6. Starter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schalter (9) als Transistor realisiert ist.6. Starter according to one of the preceding claims, characterized in that the switch (9) is realized as a transistor.
7. Starter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Starter ein Ritzelstarter ist. 7. Starter according to one of the preceding claims, characterized in that the starter is a pinion starter.
EP07802556A 2006-10-09 2007-08-09 Starter for internal combustion engines having relief switch Withdrawn EP2079924A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006047608A DE102006047608A1 (en) 2006-10-09 2006-10-09 Starter for internal combustion engines with relief switch
PCT/EP2007/058275 WO2008043589A1 (en) 2006-10-09 2007-08-09 Starter for internal combustion engines having relief switch

Publications (1)

Publication Number Publication Date
EP2079924A1 true EP2079924A1 (en) 2009-07-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07802556A Withdrawn EP2079924A1 (en) 2006-10-09 2007-08-09 Starter for internal combustion engines having relief switch

Country Status (7)

Country Link
US (1) US20100186703A1 (en)
EP (1) EP2079924A1 (en)
JP (1) JP2010506093A (en)
KR (1) KR20090061035A (en)
CN (1) CN101523045B (en)
DE (1) DE102006047608A1 (en)
WO (1) WO2008043589A1 (en)

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DE102009028294A1 (en) * 2009-08-06 2011-02-10 Robert Bosch Gmbh Device for starting an internal combustion engine
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DE102006047608A1 (en) 2008-04-10
JP2010506093A (en) 2010-02-25
CN101523045A (en) 2009-09-02
KR20090061035A (en) 2009-06-15
CN101523045B (en) 2012-04-18
WO2008043589A1 (en) 2008-04-17
US20100186703A1 (en) 2010-07-29

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