WO2010069645A1 - Procédé et dispositif pour groupes marche-arrêt de moteurs à combustion interne de véhicules à moteur - Google Patents

Procédé et dispositif pour groupes marche-arrêt de moteurs à combustion interne de véhicules à moteur Download PDF

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Publication number
WO2010069645A1
WO2010069645A1 PCT/EP2009/063745 EP2009063745W WO2010069645A1 WO 2010069645 A1 WO2010069645 A1 WO 2010069645A1 EP 2009063745 W EP2009063745 W EP 2009063745W WO 2010069645 A1 WO2010069645 A1 WO 2010069645A1
Authority
WO
WIPO (PCT)
Prior art keywords
pinion
ring gear
spring
torsion spring
starting device
Prior art date
Application number
PCT/EP2009/063745
Other languages
German (de)
English (en)
Inventor
Sven Hartmann
Juergen Gross
Stefan Tumback
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to EP09740119A priority Critical patent/EP2379875A1/fr
Priority to JP2011541246A priority patent/JP5322132B2/ja
Publication of WO2010069645A1 publication Critical patent/WO2010069645A1/fr

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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
    • 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
    • F02N15/063—Starter drives with resilient shock absorbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
    • 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
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H55/18—Special devices for taking up backlash
    • 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
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • 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
    • F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
    • 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
    • F02N15/043—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer
    • F02N15/046—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer of the planetary type
    • 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
    • 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
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/005—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation
    • 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
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/005—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation
    • F02N2019/008—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation the engine being stopped in a particular position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H2055/366—Pulleys with means providing resilience or vibration damping

Definitions

  • the invention relates to a starting method for internal combustion engines in motor vehicles with a start-stop system according to the preamble of claim 1 and a starting device for carrying out the method according to the preamble of claim 4.
  • Internal combustion engines of vehicles are usually turned on by a starter motor, wherein initially a pinion of the starting device latches into a ring gear of the internal combustion engine before the starter motor is turned on.
  • the internal combustion engine is automatically switched off when the vehicle stops for a long time. At the end of the stop phase, the machine is automatically restarted to continue the journey.
  • Circumferential speed of the ring gear at the outlet of the deactivated internal combustion engine due to compression in the cylinders of the engine changed greatly.
  • the present invention seeks to ensure the meshing of the starter pinion after switching off the internal combustion engine in the still running ring gear at the beginning of the stop phase with simple mechanical means.
  • start-stop systems for internal combustion engines in motor vehicles with the starting method according to the characterizing features of claim 1 and in a starting device with the characterizing feature of claim 4 is achieved by simple mechanical means a time-shortened Start process by the meshing of the starter pinion in the expiring sprocket of the machine.
  • the electronic control of the start-stop system can be significantly simplified. Furthermore, it is achieved in this way that against an unsprung or hard-sprung meshing of the starter pinion in the outgoing, still rotating ring gear can be avoided by occurring setbacks on the freewheel or the gearbox of the starting device.
  • the starting method according to the characterizing features of claim 1 relates in particular to the pinion as a whole, preferably as a massearmes
  • Plug-in pinion by means of a torsion spring in the still rotating sprocket of the machine is resiliently sprung.
  • a torsion spring in the still rotating sprocket of the machine is resiliently sprung.
  • the pinion be elastically rotated in the direction of rotation of the rotating ring gear relative to the pinion shaft in an area limited by stops by means of a spring, in particular a prestressed torsion spring.
  • a spring in particular a prestressed torsion spring.
  • limited by stops twisting can be realized in the simplest way, that the pinion is connected to a torsional backlash via an axial sliding toothing with the pinion shaft, wherein the teeth of the sliding toothing are formed narrower than the grooves.
  • the torsion spring is arranged as a helical spring on the back of the pinion concentric on the pinion shaft.
  • this torsion spring expediently its front end is fixed in an axial bore of the pinion and its rear end engages in an axial bore on an annular shoulder of the pinion shaft.
  • the coil spring is at least partially received in an enlarged bore of the pinion shaft in the region of a freewheel body, wherein the bottom of the bore forms the annular shoulder for the rear end of the coil spring.
  • the coil spring forms both a torsion spring and an axial pressure spring for the pinion.
  • a second embodiment of the starting device for carrying out the starting method according to claim 1 provides that the pinion is divided in a small front part serving as a pilot wheel and a rear formed as Steckritzel part in the axial direction, wherein the pilot relative to the Steckritzel limited in a limited by stops VerF Scheme by means of a spring, in particular a prestressed torsion spring in the direction of rotation of the rotating ring gear is elastically rotated.
  • Mass is limited to the much lighter pilot.
  • the pilot wheel rests in the idle state by means of the prestressed spring on the stop with which the pinion pinion
  • the torsion spring is expediently designed as a helical spring and used in a bore on the end face of the pinion gear facing the pilot wheel concentric with the pinion shaft.
  • the pilot wheel is with one end attached to the Steckritzel and the other end to the pilot.
  • a pin protruding axially from the front end side of the pinion pin projects radially through a window of the pilot wheel with a radial distance to the pinion axis, its end being in contact with the axial stop for the pilot wheel is provided.
  • the window of the Pilot wheel in the circumferential direction chosen so wide that the opposite sides of the window each form a rotational stop for the pilot wheel relative to the Steckritzel.
  • the backlash of the teeth of the pilot wheel with the ring gear is designed to be larger than that between Steckritzel and sprocket.
  • the teeth of the ring gear and / or the pilot wheel are provided at the end faces, which are opposite each other in the lax state, with a bevel of the mutually coming into contact tooth flanks, which represent a further Einspur silk.
  • Such a chamfer of the tooth flanks is particularly advantageous when meshing a pinion without a pilot wheel according to the first embodiment of the invention.
  • crankshaft is rotated by the engine control unit from the starter motor in the optimal starting position for the subsequent restart, so as to shorten the subsequent restart of the machine.
  • Figure 1 is a start-stop system for internal combustion engines in vehicles with a starting device according to the invention in a schematic representation, Figure 2 pinion, pinion shaft and freewheel body of the starting device as a unit in three-dimensional view as a first embodiment of the invention, Figure 3, the assembly of Figure 2 with explosive arrangement of the pinion, the torsion spring and the pinion shaft with the sliding toothing and the
  • Figure 4 is an enlarged view of the sliding toothing with a
  • Figure 5 is an enlarged three-dimensional view of the teeth of the pinion and the ring gear of the machine, Figure 6 pinion and pinion shaft - assembly with a torsion and compression spring in
  • Figure 7 shows a further embodiment, a pinion-pinion shaft unit with a arranged in front of the pinion pilot wheel in longitudinal section and Figure 8 shows a detail of the pilot wheel and the pinion in front view with torsional stops and an enlarged backlash of the
  • FIG. 1 shows a start-stop system for a first exemplary embodiment
  • Internal combustion engines in motor vehicles in a schematic representation. It comprises a starting device 10 with a starter motor 11, a starter relay 12 and a pinion 13 for axial meshing in a ring gear 14 of an internal combustion engine 15.
  • the starter relay 12 has a relay winding 16, a plunger 17 and a switching contact 18 for switching the main current for the
  • the start-stop system further comprises a motor control unit 19 which, like the switching contact 18 of the starter relay 12 is connected to a positive terminal to the electrical system of the motor vehicle, not shown.
  • the engine control unit 19 is further supplied via a plurality of signal inputs different sensor signals, with which, for example, a clutch operation, a brake operation, the position of a gear selector lever, the engine and the wheel speed and the like is detected.
  • the motor control unit 19 is further connected via an output to the relay winding 16, with which the pinion 13 is meshed via an engagement lever 20 in the ring gear 14 of the internal combustion engine 15 and the starter motor
  • the starter motor 11 drives via a planetary gear 21, a drive shaft 22 which is coupled via a coarse thread with a freewheel 23 in the rule.
  • the freewheel 23 is the output side in one piece with a pinion shaft connected to the pinion 13 is limited axially slidably mounted by means of a sliding teeth limited by stops.
  • Starter relay 12 is activated, wherein the starter motor 11 is controlled via a further connection directly from the engine control unit 19 and slightly rotated. Through the relay winding 16 while the pinion 13 is also advanced over the plunger 17 and the engagement lever 20 to the ring gear 14 of the machine. In a tooth-on-tooth position 20 inserted engagement spring 24 is tensioned in a known manner, so that by slightly turning the starter motor 11, the teeth of the pinion 13 in the next tooth gap of the ring gear 14 to a stop on the Drive shaft 22 can engage.
  • the start-stop system of the motor vehicle is now activated, wherein at the beginning of each stop phase of the vehicle, for example by detecting the rotational speed at the front wheels of the vehicle, the internal combustion engine is switched off.
  • FIG. 2 shows a three-dimensional view of a unit 27, consisting of the pinion 13, the torsion spring 25 and the pinion shaft 26 with the freewheel main body 23a.
  • Figure 3 shows these parts in an explosive arrangement and that a stop ring 28 as an axial stop for the pinion 13, a snap ring 29 for fixing the stop ring 28, the pinion 13 with a splined inner bore 30a, a bearing bush 31, the torsion spring 25, the pinion shaft 26 with a spline toothing 30b and the freewheel main body 23a and a further bearing bush 31.
  • the pinion shaft 26 forms with its spline 30b together with the spline inner bore 30a of the pinion 13, the axial spline 30 for the pinion assembly.
  • the two bushings 31 are inserted on both sides in a central bore 26 a of the pinion shaft, in which during assembly of the starting device 10 of Figure 1 the
  • the torsion spring 25 is placed concentrically on a thickening 26b arranged behind the spline toothing 30b of the pinion shaft 26, where it engages with its rear end 25a in an axial bore 32 on an annular shoulder 33 of the pinion shaft 26.
  • the front end 25b of the coil spring designed as a torsion spring 25 is on
  • Pinion 13 fixed and indeed in an unrecognizable further axial bore on the sprocket rear side.
  • FIG. 4 shows, in an enlarged outburst, the front view of the sliding toothing 30 between the pinion 13 and the pinion shaft 26.
  • the teeth 30c of the sliding toothing 30 are significantly narrower than the grooves 3Od lying therebetween.
  • the grooves 30d are here three times wider than the teeth 30c, in which, with respect to a normal spline toothing, every second tooth has been omitted.
  • the torsion spring 25 is biased during assembly of the assembly 27 so far that it presses the pinion 13 with the teeth 30c of Figure 4 against the teeth 30c of the pinion shaft 26 in the rest position.
  • FIG. 5 the pinion 15 of the starting device 10 from FIG. 1 and the toothed ring 14 of the internal combustion engine 15 displaced axially therefrom are shown enlarged in a three-dimensional view. It can be seen that during the axial advancement of the pinion 13 to the still rotating in the direction of the arrow gear 14 of the machine, the pinion 13 is taken in the direction of arrow 34.
  • the torsion spring 25 is now first stretched while the pinion 13 is elastically rotated on the sliding toothing 30 over the rotation range x with respect to the pinion shaft 26 in the direction of rotation of the rotating ring gear 14.
  • the chamfer 35 is attached to those tooth flanks 13a, 14a which come into contact with each other when the pinion 13 meshes with the still rotating ring gear 14.
  • the tapered end faces 13c not only on the pinion 13 but also on the ring gear 14.
  • the pinion 13 when meshing in the still rotating sprocket 14 of the machine either immediately taken against the force of the torsion spring 25 and then fully Siliconspurt or the pinion 13 is first of one of the teeth 14 a of the ring gear 14 taken and coming into engagement with the ring gear 14 tooth 13a of the pinion 13 initially slips once again at the bevel 35 of the tooth flanks 13b, 14b to now engage with slow rotation in the next tooth gap of the ring gear 14 already.
  • Pinion shaft 26 is thereby borne torsionally elastic by the torsion spring 25. Only when the rotational stop in the sliding toothing 30 is reached, the pinion shaft 26 is forcibly taken from the pinion 13. About the freewheel 23, the planetary gear 21 and the starter motor 11 is decoupled. In a further development of the invention, the crankshaft is now rotated by the engine control unit 19 from the starter motor 11 to the optimal starting position for the subsequent restart before the engine 12 stops.
  • FIG. 6 shows a modified embodiment of the invention in which a helical spring 36 inserted between the pinion 13 and the pinion shaft 26 forms both a torsion spring and an axial pressure spring for the pinion 13.
  • the front end 36b of the coil spring 36 is angled axially and inserted into an axial bore 37 on the rear side of the pinion 13.
  • the 36a of the coil spring 36 is also angled axially and inserted into the axial bore 32 on the main body 23a of the freewheel 23.
  • the coil spring 36 is partially received in a ring recess 38 of the pinion shaft 26 in the region of the freewheel body 23a, wherein the bottom 38a of the annular recess 38 has the axial bore 32 for the rear end 36a of the coil spring 36.
  • the coil spring 36 presses in the idle state, the pinion 13 against the front stop ring 28, whereby between the back of the pinion 13 and the front end of the freewheel body in axial spring travel y occurs over which the pinion 13 against the axial force of the prestressed coil spring 26 at the Sliding toothing 30 is axially displaceable.
  • the axial suspension of the coil spring 36 is thereby designed so that the suspension is softer than that of the engagement spring 24 of the starter 10 of Figure 1.
  • the pinion on the chamfer 35 at the front end of the teeth 13 a of the pinion 13 at Einspurvorgang in the ring gear 14 of the machine with a measured force can slip back springing.
  • the rotation of the pinion 13 relative to the pinion shaft 26 remains in the region of the sliding toothing 30 maintained in the manner as it was explained to Figure 4.
  • Figures 7 and 8 show a further embodiment of the invention with a in
  • FIG. 7 shows a pinion 40 of a starting device enlarged in longitudinal section, the pinion 40 being divided in a small front part serving as a pilot wheel 41 and a rear part designed as a plugging pinion 42 in the axial direction.
  • FIG. 8 shows, in this embodiment, an outbreak of the pilot wheel 41 in the front view with the plug-in pinion 42 lying behind it Front side of the pinion 42 is pressed with a radial distance from the pinion axis an axially projecting pin 43 in a corresponding blind hole 40 a of the pinion, which projects through a window 44 of the pilot wheel 41 therethrough.
  • a ring 45 fastened to the front end of the bolt 43 forms an axial stop for the pilot wheel 41.
  • the pilot wheel 41 is elastically rotatable relative to the pinion gear 42 in a twisting region limited by stops by means of a pretensioned torsion spring 25 in the direction of rotation of the rotating ring gear 14 of the internal combustion engine 10 ,
  • the window 44 in the pilot wheel 41 is selected to be so wide that the opposite sides of the window each form a rotational stop 44a and 44b for the pilot wheel 41 with respect to the pinion gear 42.
  • the torsion spring 25 is formed as a helical spring. She is in a bore 46 at the
  • the torsion spring 25 is also here with its rear angled end 25a in an axial bore of the pinion 42 at the bottom of the bore 46 and inserted with its front axially angled end 25b in a correspondingly arranged bore of the pilot wheel 41.
  • the pinion 42 is guided axially displaceable between two stops 48 in a known manner without backlash with a sliding toothing 30 on the pinion shaft 47.
  • the sprocket 40 is now pre-spoked via the engine control unit 19 of FIG. 1 by the starter relay 16 until initially the pilot wheel 41 with its teeth 41a abuts the end face of the sprocket 14 of the engine and of the teeth 14a of the ring gear 14 against the force of the torsion spring 25 of the still rotating
  • Sprocket 14 is taken. Due to the low mass of the pilot wheel 41, it is at the same time taken along by the ring gear 14 and compared to the pinion 42 with its significantly larger inertial mass in the direction of arrow 34 elastically resiliently rotated. The pilot wheel 41 is then fully meshed in the ring gear 14 of the machine, so that now the teeth 42 a of the Steckritzels 42 reach the sprocket 14.
  • the window 44 of the pilot wheel 41 with the rotational stops 44a and 44b of the pin 43 on the pinion 42 is chosen so wide that at high peripheral speeds of the ring gear 14, the pilot 41 can be rotated relative to the pinion 42 by a whole pitch, so that the teeth 42a of Steckritzels 42 then completely can easily completely mesh with the ring gear 14.
  • the pilot wheel 41 is not rotated as far as the stop 44b relative to the pinion 42.
  • the prestressed torsion spring 25 presses the plug-in pinion 42 again in the direction of rotation until the bolt 43 again reaches the front stop 44a.
  • the teeth 41a of the pilot wheel 41 are formed with respect to the teeth 42a of the pinion gear 42 of FIG 8 less high and less wide. This results in the teeth between ring gear 14 and pilot 41 a greater backlash than that between sprocket 14 and pinion gear 42.
  • the teeth 41a of the pilot wheel 41 can thus easier in the tooth gaps of
  • the invention is not limited to the illustrated and described embodiments but also includes alternative solutions that are adapted depending on the design of the starting device 10 of Figure 1 can. So it is within the scope of the invention also possible to modify the sliding toothing between pinion 13 and pinion shaft 26 such that the pinion 13 as Steckritzel for a so-called Spitzmaul starter at the rear end with an external toothing and the pinion shaft with the freewheel body with a To provide internal toothing. Besides, it is in
  • the so-called coarse thread between freewheel and drive shaft 22 of the starting device 10 which is conventional per se, is designed as axial sliding toothing, so that undesired rotation of the pinion in the wrong direction is avoided for meshing in the pinion. If necessary, already beveled

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Gears, Cams (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

L'invention concerne un procédé de démarrage pour moteurs à combustion interne dans des véhicules à moteur comportant un groupe marche-arrêt, ainsi qu'un dispositif de démarrage (10), pour la mise en oeuvre de ce procédé, comprenant un moteur de démarreur (11) et un dispositif d'embrayage (12, 20) qui amène en prise axialement, au début d'une phase d'arrêt, un pignon (13) avec une couronne dentée (14) du moteur à combustion interne. En vue d'avoir un laps de temps le plus court possible jusqu'à mise en disponibilité d'un redémarrage du moteur, l'invention est caractérisée en ce qu'au début de la phase d'arrêt, le pignon (13), après mise hors-circuit et avant l'arrêt du moteur à combustion interne (15), le moteur du démarreur étant arrêté, est élastiquement engagé, au moyen d'un ressort de torsion (25), avec la couronne dentée (14) qui se trouve encore en rotation, ceci dans le sens de rotation de ladite couronne dentée. A cet égard, le pignon (13), soit dans sa totalité, soit uniquement par sa partie antérieure séparée, en tant que roue pilote (41), s'engrène élastiquement en rotation, dans la couronne dentée (14) du moteur (10).
PCT/EP2009/063745 2008-12-19 2009-10-20 Procédé et dispositif pour groupes marche-arrêt de moteurs à combustion interne de véhicules à moteur WO2010069645A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09740119A EP2379875A1 (fr) 2008-12-19 2009-10-20 Procédé et dispositif pour groupes marche-arrêt de moteurs à combustion interne de véhicules à moteur
JP2011541246A JP5322132B2 (ja) 2008-12-19 2009-10-20 自動車における内燃機関のスタートストップ装置のための方法及び装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008054965.7A DE102008054965B4 (de) 2008-12-19 2008-12-19 Verfahren und Vorrichtung für Start-Stopp-Anlagen von Brennkraftmaschinen in Kraftfahrzeugen
DE102008054965.7 2008-12-19

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EP2693043A4 (fr) * 2011-03-31 2015-12-02 Mitsubishi Electric Corp Appareil de démarrage de moteur
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US10968997B2 (en) * 2018-12-20 2021-04-06 Hyundai Motor Company Anti-backlash structure for scissors gear

Also Published As

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DE102008054965B4 (de) 2018-08-23
DE102008054965A1 (de) 2010-07-01
KR20110112298A (ko) 2011-10-12
EP2379875A1 (fr) 2011-10-26
JP5322132B2 (ja) 2013-10-23
JP2012512981A (ja) 2012-06-07

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