EP1313946A1 - Systeme de demarrage electrique pour moteurs a combustion interne avec protection contre les surcharges - Google Patents

Systeme de demarrage electrique pour moteurs a combustion interne avec protection contre les surcharges

Info

Publication number
EP1313946A1
EP1313946A1 EP01956286A EP01956286A EP1313946A1 EP 1313946 A1 EP1313946 A1 EP 1313946A1 EP 01956286 A EP01956286 A EP 01956286A EP 01956286 A EP01956286 A EP 01956286A EP 1313946 A1 EP1313946 A1 EP 1313946A1
Authority
EP
European Patent Office
Prior art keywords
starter motor
carbon brushes
main circuit
section
starting device
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.)
Granted
Application number
EP01956286A
Other languages
German (de)
English (en)
Other versions
EP1313946B1 (fr
Inventor
Stefan Renner
Roger Ferwagner
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 EP1313946A1 publication Critical patent/EP1313946A1/fr
Application granted granted Critical
Publication of EP1313946B1 publication Critical patent/EP1313946B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02N11/10—Safety devices
    • 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
    • F02N11/02—Starting of engines by means of electric motors the motors having longitudinally-shiftable rotors

Definitions

  • the invention relates to an electrical starting device for internal combustion engines according to the preamble of claim 1.
  • Such starting devices are also used, for example, in large motor vehicles such as buses and the like, such as in cars.
  • the starting devices are partially automatically controlled or remotely controlled so that the driver cannot acoustically monitor the starting process and therefore cannot immediately end in the event of a fault or thermal overload.
  • the starting device can heat up to such an extent, as in the case of an improperly long activation of the starter by hand, that the connecting cable between the terminal 45 of the starting relay and the starter motor becomes glowing and melts in the limit case. There is a risk that parts in the immediate vicinity of the cable in the motor vehicle will be damaged, which in extreme cases could lead to a vehicle fire.
  • the aim of the present solution is to achieve fully effective protection against overheating of external parts, even with starting systems of smaller sizes, without using additional, expensive means.
  • the starting device according to the invention with the characterizing features of claim 1 has the advantage that, in the event of an overload of the main circuit by responding to the fuse arranged in the starter motor, the risk of overheating of motor vehicle parts in the area of the starting device and thus the risk of consequential damage is reliably avoided.
  • the heating can advantageously be concentrated almost selectively on the area of the fuse integrated in the starter, so that the rest Do not damage any parts of the starter when the fuse is activated.
  • a cost-neutral fuse in the starter motor can be implemented without additional means in that at least one of the carbon brushes has a connecting lead designed as a fuse. This is through material selection or through a connection technology with z. B. lower melting point and / or realizable by a smaller cross section of the connecting strand.
  • a particularly cost-effective solution results from the fact that the cross-section of the connecting wire of the at least one carbon brush is so greatly weakened compared to the cross-section of the other areas of the main circuit that this connecting wire melts when the starter motor is subjected to excessive loads.
  • a reliable, effective fuse can already be achieved by the fact that of the at least two carbon brushes connected in series in the main circuit via the commutator rotor, the stranded wire of one carbon brush has a cross section which is more than 10%, preferably 25% weaker than the other carbon brush.
  • the connecting strands of two opposing carbon brushes have a cross-section weakened by more than 10% than that of the two other opposing carbon brushes.
  • the connecting strands can also be provided with insulation which prevents rapid heat dissipation.
  • FIG. 1 shows the structure of a starting device for internal combustion engines with starter relay and starter motor and
  • FIG. 2 shows a brush plate of the starter motor with carbon brush connecting strands as overload protection.
  • FIG. 1 shows a schematic representation of the structure of a starting device 10, the starter motor 11 of which is a four-pole DC motor with permanent magnet excitation.
  • a commutator rotor 12 of the starter motor 11 is mounted several times with its output shaft 13.
  • the output shaft 13 carries a high helix thread 14 which interacts with a nut thread (not shown) of a driving shaft 15.
  • the driver shaft 15 is fixedly connected to an outer ring of a freewheel 16, the inner ring of which carries a starter pinion 17 at the front.
  • the starter pinion 17 is via the steep thread 14 up to a stop 18 axially displaceable and thereby engages in a ring gear 19 of an internal combustion engine, not shown.
  • the starter pinion is engaged and engaged by a starter relay 20 which acts on the freewheel 16 via a bell crank 21 and an engagement spring 22.
  • the start relay 20 is also a switch contact in the main circuit 23 of the starter device.
  • a switch contact 24 shown in dashed lines is connected via a connection terminal 30 to the positive pole of an accumulator battery of the motor vehicle.
  • a connecting cable 25 leading to the starter motor 11 is fastened to the second connecting terminal 45 of the switching contact 24.
  • the connecting cable 25 is welded at its other end to a connecting bar 26, which is accommodated in a bushing 27 made of insulating material in the housing 28 of the starter motor 11.
  • the rotor 12 of the starter motor 11 carries at its rear end a commutator 29, on the circumference of which four carbon brushes 31 are arranged.
  • the carbon brushes 31a to 31d are each received in a brush holder 32 made of plastic, which is fixedly mounted on a metallic brush support plate 33.
  • the support plate 33 is fastened to the rear end plate 34 of the starter motor 11 by means of screws.
  • springs 35 arranged in the rear part of the brush holder 32, the carbon brushes 31 are pressed against the surface of the commutator 29 in the assembled state of the starter motor 11.
  • the two upper carbon brushes 31a, 31b are welded to the connecting bar 26 with their connecting strands 36a, 36b and thus form the plus-side carbon brushes.
  • the two lower carbon brushes 31c, 31d are welded with their connecting strands 36c, 36d to a bent connection angle 37 of the brush support plate 33.
  • the two lower carbon brushes 31c, 31d form the brushes on the ground side.
  • the carbon brushes 31a and 31b are connected to one another in parallel to form a group; likewise the lower carbon brushes 31c and 31d.
  • the main circuit 23 of the starting device 10 thus runs via the switch contact 24 of the starting relay 20, the connecting cable 25, the connecting rail 26 and from there via the connecting leads 36a, 36b to the carbon brushes 31a and 31b; then via the commutator 29 and the rotor 12 to the lower carbon brushes 31c and 31d and then via their connecting wires 36c and 36d to the brush support plate 33 lying on the ground.
  • the cross-sections of the connecting strands 36a and 36b of the plus-side carbon brushes 31a, 31b are designed 25% weaker than the cross-sections of the connecting leads 36c and 36d of the ground-side carbon brushes 31c, 31d.
  • the connecting strands 36a, 36b of the plus-side carbon brushes 31a, 31b have a cross section of 3 mm 2
  • the connecting leads 36c, 36d of the ground-side carbon brushes 31c, 31d have a cross section of 4 mm 2 .
  • these can additionally be secured by a known electronic overload cutoff, so that the fuse in the starter motor only responds in the event of an acute overheating on the starter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuses (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

L'invention concerne un système de démarrage électrique pour moteurs à combustion interne. Ce système comprend un démarreur (11) et un relais de démarrage (20). Des contacts de commutation de commande (24) du relais de démarrage (20) sont disposés en série avec le rotor à collecteur (12) du démarreur (11) et ses balais de charbon (31) dans le circuit principal (23) du système de démarrage. Une protection contre les surcharges ouvre le circuit principal dans le cas d'une surcharge du démarreur en fonction de l'intensité de courant et de la durée de cette surcharge. L'objectif de cette invention est d'élaborer une protection contre les surcharges du système de démarrage économique et fiable. A cet effet, au moins une section du circuit principal (23) située à l'intérieur du démarreur (11), de préférence au moins un toron de raccordement (36) des balais de charbon (31), joue le rôle de fusible.
EP01956286A 2000-08-25 2001-06-22 Systeme de demarrage electrique pour moteurs a combustion interne avec protection contre les surcharges Expired - Lifetime EP1313946B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10041822 2000-08-25
DE2000141822 DE10041822A1 (de) 2000-08-25 2000-08-25 Elektrische Startvorrichtung für Brennkraftmaschinen mit Überlastschutz
PCT/DE2001/002311 WO2002016763A1 (fr) 2000-08-25 2001-06-22 Systeme de demarrage electrique pour moteurs a combustion interne avec protection contre les surcharges

Publications (2)

Publication Number Publication Date
EP1313946A1 true EP1313946A1 (fr) 2003-05-28
EP1313946B1 EP1313946B1 (fr) 2006-12-13

Family

ID=7653783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01956286A Expired - Lifetime EP1313946B1 (fr) 2000-08-25 2001-06-22 Systeme de demarrage electrique pour moteurs a combustion interne avec protection contre les surcharges

Country Status (5)

Country Link
EP (1) EP1313946B1 (fr)
AU (1) AU2001278367A1 (fr)
DE (3) DE10041822A1 (fr)
ES (1) ES2278766T3 (fr)
WO (1) WO2002016763A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4093152B2 (ja) 2003-09-09 2008-06-04 株式会社デンソー スタータ
US7067934B2 (en) * 2003-09-12 2006-06-27 Denso Corporation Starter with overheat protection device
DE102008042442A1 (de) * 2008-09-29 2010-04-01 Robert Bosch Gmbh Starter für eine Brennkraftmaschine
DE102008044189A1 (de) * 2008-11-28 2010-06-02 Robert Bosch Gmbh Bürstenhalter für elektrische Maschine
DE102009002725A1 (de) 2009-04-29 2010-11-04 Robert Bosch Gmbh Bürstenapparat für eine elektrische Maschine sowie elektrische Maschine
DE102009037755B4 (de) 2009-08-17 2016-12-08 Audi Ag Verfahren zum Betreiben eines Anlassers für eine Brennkraftmaschine, Bordnetz und Kraftfahrzeug mit einem Bordnetz
DE102010038601A1 (de) 2010-07-29 2012-02-02 Robert Bosch Gmbh Elektrische Maschine, Startvorrichtung und Verfahren zum Betreiben einer Startvorrichtung
DE102010039044A1 (de) 2010-08-09 2012-02-09 Robert Bosch Gmbh Starter für eine Brennkraftmaschine eines Kraftfahrzeuges und Verfahren zum Herstellen eines solchen Starters
DE102010063688A1 (de) * 2010-12-21 2012-06-21 Robert Bosch Gmbh Bürstenapparat für eine elektrische Maschine
DE102012215553A1 (de) * 2012-06-27 2014-01-02 Robert Bosch Gmbh Kommutierungseinrichtung zur Stromübertragung in einer elektrischen Maschine
DE102012218708A1 (de) * 2012-10-15 2014-04-17 Robert Bosch Gmbh Kommutierungseinrichtung zur Stromübertragung in einer elektrischen Maschine
DE102012222280A1 (de) 2012-12-05 2014-06-05 Robert Bosch Gmbh Kommutierungseinrichtung zur Stromübertragung in einer elektrischen Maschine
DE102013222629A1 (de) * 2013-11-07 2015-05-07 Robert Bosch Gmbh Kommutierungseinrichtung in einer elektrischen Maschine
CN105720744B (zh) 2014-12-05 2020-06-09 法雷奥电机设备公司 设置有热保护系统的机动车辆起动器
DE102014225393A1 (de) 2014-12-10 2016-06-16 Robert Bosch Gmbh Verfahren zur Herstellung einer elektrisch leitenden Verbindung zwischen einem Kupfer-Bauteil und einem Aluminium-Bauteil
DE102015225737A1 (de) 2015-12-17 2017-06-22 Robert Bosch Gmbh Elektrische Maschine mit einer Sicherungseinrichtung und Verfahren zum Betreiben einer Sicherungseinrichtung
DE102015226207A1 (de) 2015-12-21 2017-06-22 Robert Bosch Gmbh Elektrische Maschine
DE102016226121A1 (de) 2016-12-22 2018-06-28 Seg Automotive Germany Gmbh Elektrische Maschine mit einer Sicherungseinrichtung
CN109209718B (zh) * 2017-07-03 2024-02-06 北京佩特来电器有限公司 一种起动机及其过载熔断保护装置
EP3817160A1 (fr) 2019-11-04 2021-05-05 SEG Automotive Germany GmbH Agencement de brosse pour un moteur électrique, moteur électrique et démarreur pour un moteur à combustion interne

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002232A1 (de) * 1980-01-23 1981-07-30 Robert Bosch Gmbh, 7000 Stuttgart Schalteinrichtung fuer elektrische andrehvorrichtungen fuer brennkraftmaschinen
US6028381A (en) * 1996-02-09 2000-02-22 Hitachi, Ltd. Starter equipped with current interruption mechanism
FR2785086A1 (fr) * 1998-10-23 2000-04-28 Valeo Equip Electr Moteur Circuit d'alimentation electrique d'un moteur de demarreur et demarreur de vehicule automobile comportant un coupe-circuit integre, et demarreur associe,

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0216763A1 *

Also Published As

Publication number Publication date
WO2002016763A1 (fr) 2002-02-28
AU2001278367A1 (en) 2002-03-04
EP1313946B1 (fr) 2006-12-13
ES2278766T3 (es) 2007-08-16
DE10193539D2 (de) 2003-08-07
DE50111651D1 (de) 2007-01-25
DE10041822A1 (de) 2002-03-07

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