EP1941156A1 - Starter device for starting internal combustion engines - Google Patents

Starter device for starting internal combustion engines

Info

Publication number
EP1941156A1
EP1941156A1 EP06807035A EP06807035A EP1941156A1 EP 1941156 A1 EP1941156 A1 EP 1941156A1 EP 06807035 A EP06807035 A EP 06807035A EP 06807035 A EP06807035 A EP 06807035A EP 1941156 A1 EP1941156 A1 EP 1941156A1
Authority
EP
European Patent Office
Prior art keywords
locking
internal combustion
starting device
toe
state
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Withdrawn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
EP06807035A
Other languages
German (de)
French (fr)
Inventor
Jochen Laubender
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 EP1941156A1 publication Critical patent/EP1941156A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F02N11/0851—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear
    • F02N11/0855—Circuits or control means specially adapted for starting of engines characterised by means for controlling the engagement or disengagement between engine and starter, e.g. meshing of pinion and engine gear during engine shutdown or after engine stop before start command, e.g. pre-engagement of pinion
    • 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
    • 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
    • F02N15/062—Starter drives
    • F02N15/065—Starter drives with blocking means

Definitions

  • the invention relates to a starting device for cranking internal combustion engines with the features mentioned in the preamble of claim 1.
  • starting devices of the generic type which enable a so-called start-stop operation.
  • This is characterized by the fact that a direct start of the internal combustion engine machine is possible.
  • the pinion When the engine is switched off, the pinion is already in the ring gear, so that only a rotational movement of the pinion to start the engine is necessary.
  • the prerequisite for this is that in a stop phase of the internal combustion engine, the pinion is held in the engaged state by an electromagnetic toe-in mechanism. This requires an electrical power that loads the electrical system, and generates a power loss that brings about undesirable heating.
  • the starting device according to the invention By the starting device according to the invention, the power loss is eliminated or is reduced by the toggle mechanism is locked in the advanced position, by the locking device according to the invention, which locks in a purely mechanical way.
  • the invention makes use of the advantages of start-stop operation without, however, having to accept the disadvantage of a high current consumption.
  • the invention allows noise-reduced cranking of the internal combustion engine and increases the starting comfort with low electrical energy. Also, excessive heating of circuits and the components contained therein, such as coils, magnetic switches, relays, resistors and the like is prevented.
  • the load on the vehicle electrical system and the lines is additionally reduced.
  • the start-stop mechanism is designed to provide a meshed state even during a shutdown of the internal combustion engine. This allows a restart within a time of less than one second.
  • the locking device during the stop phase mechanically holds the electromagnetic toe-in mechanism with a low current or even de-energized in the engaged state.
  • the locking device is designed electromagnetically.
  • a surge relay is used for the mechanical locking. To hold the locking device in the locked position, no power consumption is required.
  • the starting device and / or the toggle mechanism can operate electromagnetically, hydraulically and / or pneumatically.
  • thermoelectric is designed thermoelectric, wherein the locking device comprises in particular a locking relay with a thermal circuit.
  • the thermoelectric solution is very reliable and works even with significant shock, for example, by bumps in a roadway, without malfunction.
  • thermoelectric interlocking relay is expediently provided with at least one bimetallic strip which can be actuated by a heating current.
  • the bimetallic strip assumes a locking position in a heated state and an unlocked position in a cooled state.
  • This embodiment requires a heating current of about 0.5 - 0.7 A and thus up to 1/10 of the current over known solutions.
  • Figure 1 is a schematic representation of an embodiment of a starting device according to the invention in a non-interlocked and unlocked state
  • Figure 2 is a schematic representation of the starting device according to Figure 1 in außpurten and locked state.
  • FIG. 1 shows a schematic representation of an inventive embodiment of a starting device 1.
  • This comprises a housing 2 with an electromotive drive therein, which has a starter motor 3 with a driving shaft 4.
  • a starter motor 3 with a driving shaft 4.
  • a slidably arranged pinion shaft 5 is arranged, which is provided with a starter pinion 6 for coupling with a ring gear 7 of an internal combustion engine.
  • the starter pinion 6 can be brought by means of a toggle mechanism 10 in an advanced position so that the starter pinion 6 engages in the ring gear 7, as shown in Figure 2 is illustrated (tracked state), or brought into a non-tracked state, as in Figure 1 is shown, so that the starter pinion 6 assumes a non-eingepurtte position.
  • the toe-in mechanism 10 includes an armature with a switchable spool for exerting a force on the pinion shaft 5. By this force, the pinion shaft 5 can be moved back and forth, wherein the force changes direction by a reverse energization of the coil.
  • a controller 12 is present, which also controls a mechanically acting locking device 20 according to the invention.
  • the toe-in mechanism it is possible for the toe-in mechanism to lie laterally next to the pinion shaft 5 and to have, for example, a single-track relay whose movement is transmitted to the pinion via a double rocking lever. shaft 5 is transmitted, whereby the pinion shaft 5 can be moved back and forth.
  • the locking device 20 serves to lock the pinion shaft 5 or the toe-in mechanism 10 in the engaged state, wherein the locking device 20 is controllable such that it holds or locks the electromagnetic toe-in mechanism 20 or the pinion shaft 5 in the advanced position.
  • the locking device 20 has a movable locking pin 25, which is preferably electromagnetically or electrothermally movable.
  • the locking pin 25 can dive into a locking lug 21 or in a recess, an annular groove or the like of the pinion shaft 5 to provide the lock.
  • the locking device 20 can operate with a locking current.
  • this current is much lower than an actuating current of the toggle mechanism 10.
  • the locking device 20 is designed so that an electroless locking position is given. Only for a displacement of the locking pin in the locked position and in the unlocked position a short electric shock is required.
  • the locking device 20 is designed thermoelectric and has a locking relay with an electrical thermal circuit.
  • the interlock relay comprises a bimetallic strip which can be actuated by heating current.
  • the heating current of in particular about 0.5 to 0.7 A flows through a heating coil which is associated with the bimetallic strip.
  • the heating heat bends the bimetallic strip and moves a locking means which engages directly or indirectly in the locking lug 21 of the pinion shaft, as illustrated in FIG.
  • the bimetal strip accordingly assumes a locking position (FIG. 2) in the heated state and an unlocking position (FIG. 1) in a cooled state.
  • the heating current is much smaller than the electric current to be applied by the toe-in mechanism.
  • the starting device 1 is characterized by a start-stop mechanism realized with the aid of the control 12, which is designed such that in a stop phase of the internal combustion engine, during and / or after the internal combustion engine is switched off, this one engaged state (FIG. FIG. 2) of the toe-in mechanism 10, so that the starter pinion 6 is already arranged in an advanced position during a subsequent start of the internal combustion engine.
  • the toe-in mechanism 10 is movable by reverse energizing its armature from the engaged state to the sensed state. The trace is made after successful start of the engine.
  • the controller 12 controls the electromotive drive and the toggle electromagnetic mechanism 10 and the latch 20, so that the start-stop operation can be performed.
  • the invention allows a direct start in a gentle manner.
  • the locking relay or another locking device for example an electromagnetic device, is activated by a short current flow for locking, so that a fixation of the drive shaft or the pinion shaft 5 takes place purely mechanically after the circuit for the toe-in mechanism 10 has been switched off.
  • the Ausspuren the starting device 1 is carried out after a successful start of the internal combustion engine electromagnetically, at the same time the locking by a renewed energization of the locking relay is released for unlocking.
  • the mechanical force of the locking mechanism of the latching relay used must be chosen so large that the
  • Pinion 6 of the starting device 1 even with possible vibrations of the vehicle e.g. remains safely in the engaged state by bumps in the road during start-stop operation.
  • the disengagement of the pinion 6 can also take place via a freewheel of the starting device 1.
  • a locking relay is used, which is movable over a short current pulse in the locking position and moved out of the locking position. In the locked state, therefore, no current flow is needed.
  • the mechanical locking is realized via the bimetallic strip, which is deformed at a low heat output. After switching off the heating current, the bimetallic strip cools down and returns to its original shape. This unlocks the lock.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Relay Circuits (AREA)

Abstract

The invention relates to a starter device which is used to start internal combustion engines, which comprises an electromagnetic toe-in mechanism (10) and a start-stop-mechanism, which in a stop-phase of the internal combustion engine, even during and/or after stopping the internal combustion engine, a positioned state of the toe-in mechanism (10) is provoked, such that when the internal combustion engine is subsequently started, it is already in the positioned state. According to the invention, a locking device (20), which is used to lock the toe-in mechanism (10) in the positioned state, is embodied in such a manner that it can be controlled such that the electromagnetic toe-in mechanism (10) is maintained in the advanced position during the stop-phase.

Description

Startvorrichtung zum Andrehen von BrennkraftmaschinenStarting device for cranking internal combustion engines
Die Erfindung betrifft eine Startvorrichtung zum Andrehen von Brennkraftmaschinen mit den im Oberbegriff des Anspruchs 1 genannten Merkmalen.The invention relates to a starting device for cranking internal combustion engines with the features mentioned in the preamble of claim 1.
Stand der TechnikState of the art
In der DE 199 11 161 C2 ist eine als Koaxialstarter ausgebildete Startvorrichtung zum Andrehen von Brennkraftmaschinen gezeigt und beschrieben. Diese umfasst einen elektrischen Startermotor, einen Vorspurmechanismus zum Verschieben eines axialen Ritzel- schafts mit Andrehritzel. Um die Brennkraftmaschine anzudrehen, muss das Ritzel in einen Zahnkranz der Brennkraftmaschine eingreifen. Bei laufender Brennkraftmaschine muss das Ritzel wieder aus dem Zahnkranz ausspuren. Damit dies möglich ist, ist der Vorspurmechanismus mit einem Permanentmagneten und einer elektromag- netisch erregbaren Spule versehen. Eine elektrische Steuerung erlaubt zwei Flussrichtungen in der Spule, die je nach Flussrichtung eine Abstoßkraft oder eine Zugkraft auf den Permanentmagnet ausübt. Dadurch kann das Ritzel vor- und zurückbewegt und demzufolge ein- und ausgespurt werden.In DE 199 11 161 C2 a designed as Koaxialstarter starting device for cranking internal combustion engines is shown and described. This includes an electric starter motor, a toggle mechanism for shifting an axial pinion shaft with starter pinion. To turn the engine, the pinion must engage in a ring gear of the internal combustion engine. When the internal combustion engine is running, the pinion must again come out of the sprocket. To make this possible, the toggle mechanism is provided with a permanent magnet and an electromagnetically excitable coil. An electrical control allows two directions of flow in the coil, which exerts a repelling force or a tensile force on the permanent magnet depending on the flow direction. As a result, the pinion can be moved back and forth and consequently on and spurred out.
Ferner sind Startvorrichtungen der gattungsgemäßen Art bekannt, die einen sogenannten Start-Stopp-Betrieb ermöglichen. Dieser zeichnet sich dadurch aus, dass ein Direktstart der Brennkraftma- schine möglich ist. Bei ausgeschalteter Brennkraftmaschine befindet sich das Ritzel bereits in dem Zahnkranz, sodass nur eine Drehbewegung des Ritzels zum Start der Brennkraftmaschine notwendig ist. Voraussetzung dafür ist, dass in einer Stopp-Phase der Brennkraft- maschine das Ritzel in eingerücktem Zustand von einem elektromagnetischen Vorspurmechanismus gehalten wird. Dies erfordert eine elektrische Leistung, die das Bordnetz belastet, und erzeugt eine Verlustleistung, die unerwünschte Erwärmung mit sich bringt.Furthermore, starting devices of the generic type are known, which enable a so-called start-stop operation. This is characterized by the fact that a direct start of the internal combustion engine machine is possible. When the engine is switched off, the pinion is already in the ring gear, so that only a rotational movement of the pinion to start the engine is necessary. The prerequisite for this is that in a stop phase of the internal combustion engine, the pinion is held in the engaged state by an electromagnetic toe-in mechanism. This requires an electrical power that loads the electrical system, and generates a power loss that brings about undesirable heating.
Vorteile der ErfindungAdvantages of the invention
Durch die erfindungsgemäße Startvorrichtung entfällt die Verlustleistung oder wird reduziert, indem der Vorspurmechanismus in der vorgeschobenen Stellung verriegelt wird, und zwar durch die erfin- dungsgemäße Verriegelungseinrichtung, die auf rein mechanischem Wege verriegelt. Durch die Erfindung werden die Vorteile eines Start- Stopp-Betriebs genutzt, ohne jedoch den Nachteil einer hohen Stromaufnahme in Kauf nehmen zu müssen. Die Erfindung erlaubt ein geräuschreduziertes Andrehen der Brennkraftmaschine und er- höht den Startkomfort mit geringer elektrischer Energie. Auch wird eine übermäßige Erwärmung von Stromkreisen und der darin enthaltenen Komponenten, wie Spulen, Magnetschalter, Relais, Widerstände und dergleichen verhindert. Die Belastung des Bordnetzes und der Leitungen wird zusätzlich reduziert. Bevorzugterweise ist der Start-Stoppmechanismus so ausgebildet, dass er einen eingespurten Zustand noch während eines Absteilens der Brennkraftmaschine schafft. Dadurch ist ein erneutes Starten innerhalb einer Zeit unterhalb einer Sekunde möglich.By the starting device according to the invention, the power loss is eliminated or is reduced by the toggle mechanism is locked in the advanced position, by the locking device according to the invention, which locks in a purely mechanical way. The invention makes use of the advantages of start-stop operation without, however, having to accept the disadvantage of a high current consumption. The invention allows noise-reduced cranking of the internal combustion engine and increases the starting comfort with low electrical energy. Also, excessive heating of circuits and the components contained therein, such as coils, magnetic switches, relays, resistors and the like is prevented. The load on the vehicle electrical system and the lines is additionally reduced. Preferably, the start-stop mechanism is designed to provide a meshed state even during a shutdown of the internal combustion engine. This allows a restart within a time of less than one second.
In einer vorteilhaften Weiterbildung der erfindungsgemäßen Startvorrichtung ist vorgesehen, dass die Verriegelungseinrichtung während der Stopp-Phase den elektromagnetischen Vorspurmechanismus mit einem geringen Strom oder auch stromlos im eingespurten Zustand mechanisch hält. Eine bevorzugte Lösung besteht darin, dass die Verriegelungseinrichtung elektromagnetisch ausgeführt ist. Vorzugsweise wird ein Stromstoßrelais für die mechanische Verriegelung eingesetzt. Um die Verriegelungseinrichtung in der Verriegelungsstellung zu halten, ist keine Stromaufnahme erforderlich. Die Startvorrichtung und/oder der Vorspurmechanismus kann elektromagnetisch, hydraulisch und/oder pneumatisch arbeiten.In an advantageous embodiment of the starting device according to the invention it is provided that the locking device during the stop phase mechanically holds the electromagnetic toe-in mechanism with a low current or even de-energized in the engaged state. A preferred solution is that the locking device is designed electromagnetically. Preferably, a surge relay is used for the mechanical locking. To hold the locking device in the locked position, no power consumption is required. The starting device and / or the toggle mechanism can operate electromagnetically, hydraulically and / or pneumatically.
Eine andere bevorzugte Lösung besteht darin, dass die Verriegelungseinrichtung thermoelektrisch ausgeführt ist, wobei die Verriegelungseinrichtung insbesondere ein Verriegelungsrelais mit einer Thermoschaltung umfasst. Die thermoelektrische Lösung ist sehr funktionssicher und arbeitet selbst bei erheblichen Erschütterungen, zum Beispiel durch Bodenwellen in einer Fahrbahn, ohne Fehlfunktion.Another preferred solution is that the locking device is designed thermoelectric, wherein the locking device comprises in particular a locking relay with a thermal circuit. The thermoelectric solution is very reliable and works even with significant shock, for example, by bumps in a roadway, without malfunction.
Zweckmäßigerweise ist das thermoelektrische Verriegelungsrelais mit mindestens einem mit einem Heizstrom betätigbaren Bimetall- streifen versehen. Insbesondere nimmt der Bimetallstreifen in einem geheizten Zustand eine Verriegelungsstellung und in einem abgekühlten Zustand eine Entriegelungsstellung ein. Diese Ausführungsform benötigt einen Heizstrom von etwa 0,5 - 0,7 A und somit bis zu 1/10 des Stromes gegenüber bekannten Lösungen.The thermoelectric interlocking relay is expediently provided with at least one bimetallic strip which can be actuated by a heating current. In particular, the bimetallic strip assumes a locking position in a heated state and an unlocked position in a cooled state. This embodiment requires a heating current of about 0.5 - 0.7 A and thus up to 1/10 of the current over known solutions.
Weitere Vorteile der Erfindung ergeben sich aus den Ansprüchen.Further advantages of the invention will become apparent from the claims.
Zeichnungendrawings
Die Erfindung wird nachfolgend anhand zweier Ausführungsbeispiele durch zugehörige Zeichnungen näher erläutert. Es zeigen: Figur 1 eine schematische Darstellung einer Ausführungsform einer erfindungsgemäßen Startvorrichtung in einem nicht eingespurten und nicht verriegelten Zustand undThe invention will be explained in more detail with reference to two embodiments by accompanying drawings. Show it: Figure 1 is a schematic representation of an embodiment of a starting device according to the invention in a non-interlocked and unlocked state and
Figur 2 eine schematische Darstellung der Startvorrichtung gemäß Figur 1 in einem eingespurten und verriegelten Zustand.Figure 2 is a schematic representation of the starting device according to Figure 1 in a eingepurten and locked state.
Figur 1 zeigt eine schematische Darstellung einer erfindungsgemä- ßen Ausführungsform einer Startvorrichtung 1. Diese umfasst ein Gehäuse 2 mit einem darin befindlichen elektromotorischen Antrieb, der einen Startermotor 3 mit einem Mitnehmerschaft 4 aufweist. Koaxial um den Mitnehmerschaft 4 ist ein gleitbar angeordneter Ritzelschaft 5 angeordnet, der mit einem Andrehritzel 6 zum Kuppeln mit einem Zahnkranz 7 einer Brennkraftmaschine versehen ist.1 shows a schematic representation of an inventive embodiment of a starting device 1. This comprises a housing 2 with an electromotive drive therein, which has a starter motor 3 with a driving shaft 4. Coaxially about the Mitnehmerschaft 4 a slidably arranged pinion shaft 5 is arranged, which is provided with a starter pinion 6 for coupling with a ring gear 7 of an internal combustion engine.
Das Andrehritzel 6 kann mit Hilfe eines Vorspurmechanismus 10 in eine vorgeschobene Stellung gebracht werden, sodass das Andrehritzel 6 in den Zahnkranz 7 eingreift, wie in Figur 2 veranschaulicht ist (eingespurter Zustand), oder in einen nicht eingespurten Zustand gebracht werden, wie in Figur 1 gezeigt ist, sodass das Andrehritzel 6 eine nicht eingespurte Stellung einnimmt.The starter pinion 6 can be brought by means of a toggle mechanism 10 in an advanced position so that the starter pinion 6 engages in the ring gear 7, as shown in Figure 2 is illustrated (tracked state), or brought into a non-tracked state, as in Figure 1 is shown, so that the starter pinion 6 assumes a non-eingepurtte position.
Der Vorspurmechanismus 10 umfasst einen Anker mit einer schalt- baren Spule, um eine Kraft auf den Ritzelschaft 5 auszuüben. Durch diese Kraft kann der Ritzelschaft 5 vor- und zurückbewegt werden, wobei die Kraft ihre Richtung durch eine umgekehrte Bestromung der Spule ändert. Zur Ansteuerung der Spule und des Startermotors 3 ist eine Steuerung 12 vorhanden, die auch eine erfindungsgemäße me- chanisch wirkende Verriegelungseinrichtung 20 ansteuert. Alternativ ist es möglich, dass der Vorspurmechanismus seitlich neben dem Ritzelschaft 5 liegt und beispielsweise ein Einspurrelais aufweist, dessen Bewegung über einen Doppelschwinghebel auf den Ritzel- schaft 5 übertragen wird, wodurch der Ritzelschaft 5 vor- und zurückbewegt werden kann.The toe-in mechanism 10 includes an armature with a switchable spool for exerting a force on the pinion shaft 5. By this force, the pinion shaft 5 can be moved back and forth, wherein the force changes direction by a reverse energization of the coil. For controlling the coil and the starter motor 3, a controller 12 is present, which also controls a mechanically acting locking device 20 according to the invention. Alternatively, it is possible for the toe-in mechanism to lie laterally next to the pinion shaft 5 and to have, for example, a single-track relay whose movement is transmitted to the pinion via a double rocking lever. shaft 5 is transmitted, whereby the pinion shaft 5 can be moved back and forth.
Erfindungsgemäß dient die Verriegelungseinrichtung 20 zur Verrie- gelung des Ritzelschafts 5 beziehungsweise des Vorspurmechanismus 10 im eingespurten Zustand, wobei die Verriegelungseinrichtung 20 derart steuerbar ausgebildet ist, dass sie den elektromagnetischen Vorspurmechanismus 20 beziehungsweise den Ritzelschaft 5 in der vorgeschoben Stellung hält beziehungsweise verriegelt.According to the invention, the locking device 20 serves to lock the pinion shaft 5 or the toe-in mechanism 10 in the engaged state, wherein the locking device 20 is controllable such that it holds or locks the electromagnetic toe-in mechanism 20 or the pinion shaft 5 in the advanced position.
Die Verriegelungseinrichtung 20 weist einen beweglichen Verriegelungszapfen 25 auf, der vorzugsweise elektromagnetisch oder elekt- rothermisch bewegbar ist. Der Verriegelungszapfen 25 kann in einen Verriegelungsansatz 21 beziehungsweise in eine Vertiefung, eine Ringnut oder dergleichen des Ritzelschaftes 5 eintauchen, um die Verriegelung zu schaffen. In der Verriegelungsstellung kann die Verriegelungseinrichtung 20 mit einem Verriegelungsstrom arbeiten. Dieser Strom ist jedoch sehr viel geringer als ein Betätigungsstrom des Vorspurmechanismus 10. Vorzugsweise ist die Verriegelungs- einrichtung 20 jedoch so ausgeführt, dass eine stromlose Verriegelungsstellung gegeben ist. Nur für eine Verlagerung des Verriegelungszapfens in die Sperrstellung und in die Entsperrstellung ist ein kurzer elektrischer Stromstoß erforderlich. Alternativ ist die Verriegelungseinrichtung 20 thermoelektrisch ausgeführt und weist ein Ver- riegelungsrelais mit einer elektrischen Thermoschaltung auf. Das Verriegelungsrelais umfasst einen mit Heizstrom betätigbaren Bimetallstreifen. Der Heizstrom von insbesondere etwa 0,5 - 0,7 A fließt durch eine Heizwicklung, die dem Bimetallstreifen zugeordnet ist. Durch die Heizwärme verbiegt sich der Bimetallstreifen und bewegt ein Verriegelungsmittel, welches unmittelbar oder mittelbar in den Verriegelungsansatz 21 des Ritzelschafts greift, wie es in Figur 2 veranschaulicht ist. Der Bimetallstreifen nimmt demgemäß in dem geheizten Zustand eine Verriegelungsstellung (Figur 2) und in einem abgekühlten Zustand eine Entriegelungsstellung (Figur 1 ) ein. Der Heizstrom ist sehr viel kleiner als der zum Einspuren von dem Vorspurmechanismus aufzubringende elektrische Strom.The locking device 20 has a movable locking pin 25, which is preferably electromagnetically or electrothermally movable. The locking pin 25 can dive into a locking lug 21 or in a recess, an annular groove or the like of the pinion shaft 5 to provide the lock. In the locking position, the locking device 20 can operate with a locking current. However, this current is much lower than an actuating current of the toggle mechanism 10. Preferably, however, the locking device 20 is designed so that an electroless locking position is given. Only for a displacement of the locking pin in the locked position and in the unlocked position a short electric shock is required. Alternatively, the locking device 20 is designed thermoelectric and has a locking relay with an electrical thermal circuit. The interlock relay comprises a bimetallic strip which can be actuated by heating current. The heating current of in particular about 0.5 to 0.7 A flows through a heating coil which is associated with the bimetallic strip. The heating heat bends the bimetallic strip and moves a locking means which engages directly or indirectly in the locking lug 21 of the pinion shaft, as illustrated in FIG. The bimetal strip accordingly assumes a locking position (FIG. 2) in the heated state and an unlocking position (FIG. 1) in a cooled state. The heating current is much smaller than the electric current to be applied by the toe-in mechanism.
Die Startvorrichtung 1 zeichnet sich durch einen mit Hilfe der Steuerung 12 realisierten Start-Stopp-Mechanismus aus, der so ausgebildet ist, dass in einer Stopp-Phase der Brennkraftmaschine, noch während und/oder nach einem Abstellen der Brennkraftmaschine, dieser einen eingespurten Zustand (Figur 2) des Vorspurmechanismus 10 bewirkt, damit bei einem anschließenden Start der Brennkraftmaschine das Andrehritzel 6 bereits in einer vorgeschoben Stellung angeordnet ist.The starting device 1 is characterized by a start-stop mechanism realized with the aid of the control 12, which is designed such that in a stop phase of the internal combustion engine, during and / or after the internal combustion engine is switched off, this one engaged state (FIG. FIG. 2) of the toe-in mechanism 10, so that the starter pinion 6 is already arranged in an advanced position during a subsequent start of the internal combustion engine.
Der Vorspurmechanismus 10 ist durch eine umgekehrte Bestromung seines Ankers von dem eingespurten Zustand in den ausgespürten Zustand bewegbar. Das Ausspuren erfolgt nach erfolgreichem Start der Brennkraftmaschine.The toe-in mechanism 10 is movable by reverse energizing its armature from the engaged state to the sensed state. The trace is made after successful start of the engine.
Die Steuerung 12 steuert den elektromotorischen Antrieb und den elektromagnetischen Vorspurmechanismus 10 sowie die Verriegelungseinrichtung 20, sodass der Start-Stopp-Betrieb durchgeführt werden kann.The controller 12 controls the electromotive drive and the toggle electromagnetic mechanism 10 and the latch 20, so that the start-stop operation can be performed.
Die Erfindung erlaubt einen Direktstart auf sanfte Weise. Im Stopp- Betrieb wird das Verriegelungsrelais oder eine andere Verriegelungseinrichtung, z.B. eine elektromagnetische Einrichtung, durch einen kurzen Stromfluss für das Verriegeln aktiviert, sodass eine Fi- xierung der Antriebswelle beziehungsweise des Ritzelschaftes 5 nach einer Abschaltung des Stromkreises für den Vorspurmechanismus 10 rein mechanisch erfolgt. Das Ausspuren der Startvorrichtung 1 erfolgt nach einem erfolgreichen Starten der Brennkraftmaschine elektromagnetisch, wobei gleichzeitig die Verriegelung durch eine erneute Bestromung des Verriegelungsrelais zur Entriegelung aufgehoben wird.The invention allows a direct start in a gentle manner. In the stop mode, the locking relay or another locking device, for example an electromagnetic device, is activated by a short current flow for locking, so that a fixation of the drive shaft or the pinion shaft 5 takes place purely mechanically after the circuit for the toe-in mechanism 10 has been switched off. The Ausspuren the starting device 1 is carried out after a successful start of the internal combustion engine electromagnetically, at the same time the locking by a renewed energization of the locking relay is released for unlocking.
Die mechanische Kraft des Verriegelungsmechanismus des einge- setzten Verriegelungsrelais muss so groß gewählt werden, dass dasThe mechanical force of the locking mechanism of the latching relay used must be chosen so large that the
Ritzel 6 der Startvorrichtung 1 auch bei möglichen Erschütterungen des Fahrzeuges z.B. durch Bodenwellen in der Fahrbahn während des Start-Stopp-Betriebes sicher im eingerücktem Zustand bleibt.Pinion 6 of the starting device 1 even with possible vibrations of the vehicle e.g. remains safely in the engaged state by bumps in the road during start-stop operation.
Das Ausrücken des Ritzels 6 kann auch über einen Freilauf der Startvorrichtung 1 erfolgen.The disengagement of the pinion 6 can also take place via a freewheel of the starting device 1.
Bevorzugterweise wird bei der elektromagnetischen Lösung ein Verriegelungsrelais eingesetzt, welches über einen kurzen Stromimpuls in die Verriegelungsstellung bewegbar und aus der Verriegelungs- Stellung herausbewegbar ist. Im verriegelten Zustand wird daher kein Stromfluss benötigt.Preferably, in the electromagnetic solution, a locking relay is used, which is movable over a short current pulse in the locking position and moved out of the locking position. In the locked state, therefore, no current flow is needed.
Bei einem Verriegelungsrelais mit Thermoschaltung wird die mechanische Verriegelung über den Bimetallstreifen realisiert, der jedoch bei einer geringen Heizleistung deformiert wird. Nach einem Abschalten des Heizstromes kühlt der Bimetallstreifen ab und geht in seine ursprüngliche Form zurück. Damit wird die Verriegelung aufgehoben. In a latching relay with thermal circuit, the mechanical locking is realized via the bimetallic strip, which is deformed at a low heat output. After switching off the heating current, the bimetallic strip cools down and returns to its original shape. This unlocks the lock.

Claims

Patentansprüche claims
1. Startvorrichtung zum Andrehen von Brennkraftmaschinen, mit einem insbesondere elektromagnetischen Vorspurmechanismus (10) und mit einem Start-Stopp-Mechanismus, der in einer Stopp-Phase der Brennkraftmaschine noch während und/oder nach einem Abstellen der Brennkraftmaschine einen eingespurten Zustand des Vorspurmechanismus (10) bewirkt, damit bei einem anschließenden Start der Brennkraftmaschine bereits der eingespurte Zustand vor- liegt, gekennzeichnet durch eine Verriegelungseinrichtung (20) zur Verriegelung des Vorspurmechanismus (10) im eingespurten Zustand, wobei die Verriegelungseinrichtung (20) derart steuerbar ausgebildet ist, dass sie während der Stopp-Phase den elektromagnetischen Vorspurmechanismus (10) in der vorgeschoben Stellung me- chanisch hält.1. Starting device for cranking internal combustion engines, with a particular electromagnetic toe-in mechanism (10) and with a start-stop mechanism, the in a stop phase of the internal combustion engine while and / or after stopping the internal combustion engine a eingepurten state of the toe-in mechanism (10 ), so that in a subsequent start of the internal combustion engine already the lashed state is present, characterized by a locking device (20) for locking the toe-in mechanism (10) in einpurten state, wherein the locking device (20) is designed controllable so that during the stop phase mechanically holds the electromagnetic toe-in mechanism (10) in the advanced position.
2. Startvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Verriegelungseinrichtung (20) während der Stopp-Phase den elektromagnetischen Vorspurmechanismus (10) mechanisch im eingespurten Zustand verriegelt.2. Starting device according to claim 1, characterized in that the locking device (20) during the stop phase, the electromagnetic Vorspurmechanismus (10) mechanically locked in the engaged state.
3. Startvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verriegelungseinrichtung (20) elektromagnetisch betätigbar ist.3. Starting device according to one of the preceding claims, characterized in that the locking device (20) is electromagnetically actuated.
4. Startvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verriegelungseinrichtung (20) ein Verriegelungsrelais aufweist, welches insbesondere durch Stromimpuls betätigbar ausgebildet ist. 4. Starting device according to one of the preceding claims, characterized in that the locking device (20) has a locking relay, which is formed in particular by current pulse operable.
5. Startvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verriegelungseinrichtung (20) thermoelektrisch betätigbar ist.5. Starting device according to one of the preceding claims, characterized in that the locking device (20) is thermoelectrically actuated.
6. Startvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verriegelungseinrichtung (20) ein Verriegelungsrelais mit einer elektrischen Thermoschaltung aufweist.6. Starting device according to one of the preceding claims, characterized in that the locking device (20) has a locking relay with an electrical thermal circuit.
7. Startvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Verriegelungsrelais mindestens einen mit einem Heizstrom betätigbaren Bimetallstreifen umfasst.7. Starting device according to one of the preceding claims, characterized in that the locking relay comprises at least one actuatable with a heating current bimetallic strip.
8. Startvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Bimetallstreifen in einem geheizten Zustand eine mechanische Verriegelungsstellung und in einem abgekühlten Zustand eine mechanische Entriegelungsstellung einnimmt.8. Starting device according to one of the preceding claims, characterized in that the bimetallic strip assumes a mechanical locking position in a heated state and in a cooled state, a mechanical unlocking position.
9. Startvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das mechanische Halten oder das mechanische Verriegeln durch Reibschluss und/oder Formschluss erfolgt. 9. Starting device according to one of the preceding claims, characterized in that the mechanical holding or the mechanical locking takes place by frictional engagement and / or positive engagement.
EP06807035A 2005-10-06 2006-10-06 Starter device for starting internal combustion engines Withdrawn EP1941156A1 (en)

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DE102005048598.7A DE102005048598B4 (en) 2005-10-06 2005-10-06 Starting device for cranking internal combustion engines
PCT/EP2006/067133 WO2007039643A1 (en) 2005-10-06 2006-10-06 Starter device for starting internal combustion engines

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EP (1) EP1941156A1 (en)
KR (1) KR101110096B1 (en)
CN (1) CN101326360B (en)
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DE102005048598B4 (en) 2016-06-30
WO2007039643A1 (en) 2007-04-12
KR20080053356A (en) 2008-06-12
KR101110096B1 (en) 2012-03-08
US8439006B2 (en) 2013-05-14
CN101326360B (en) 2011-03-02
US20110120406A1 (en) 2011-05-26
DE102005048598A1 (en) 2007-04-12

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