EP3161303A1 - Démarreur de véhicule automobile - Google Patents
Démarreur de véhicule automobileInfo
- Publication number
- EP3161303A1 EP3161303A1 EP15736536.2A EP15736536A EP3161303A1 EP 3161303 A1 EP3161303 A1 EP 3161303A1 EP 15736536 A EP15736536 A EP 15736536A EP 3161303 A1 EP3161303 A1 EP 3161303A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- launcher
- starter
- pad
- control lever
- lever
- 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
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
- 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
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits 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
- F02N11/00—Starting of engines by means of electric motors
- F02N11/10—Safety devices
- F02N11/106—Safety devices for stopping or interrupting starter actuation
Definitions
- the present invention relates in particular to an electric starter of an internal combustion engine, more particularly to a starter of an internal combustion engine of a motor vehicle.
- the patent application FR 2,872,551 describes a motor vehicle starter having a surface of the lever end facing the front face of the mobile launcher shaped according to a cam.
- the present invention aims to improve this type of starter.
- the subject of the invention is thus an electric starter of an internal combustion engine, more particularly a starter of an internal combustion engine of a motor vehicle, this starter comprising:
- a launcher movable between a rest position and an active position in which the launcher is capable of starting the internal combustion engine
- control lever arranged to move the launcher axially, the control lever being capable of pivoting about a pivot axis, this pivot axis being movable over a predetermined linear stroke from a rest position to a bearing position lever in which the lever can pivot to bring the launcher into the active position, the control lever having at least one pad arranged to cooperate with the launcher,
- the electric shutdown of the electric motor of the starter is obtained by the movement of the pivot axis of its lever support positon towards its rest position and by the movement of the pad relative to the launcher in a direction opposite to the movement of the pivot axis of its lever support position to its rest position.
- the invention makes it possible, with regard to the cut-off clearance required to electrically deactivate a starter contactor in the event of the starter being locked in the active position, to distribute this breaking clearance on the displacement of the pivot axis and on the displacement. skating.
- the variable play pad between the pad and the launcher reduces the amplitude of the displacement of the pivot axis of the control lever, without completely replacing it. It is important for the mobile core of the contactor to accumulate kinetic energy in order to avoid any risk of blocking the cold Z function.
- the Z function makes it possible to move the launcher, or the launcher gear, axially so that it engages in the ring of the internal combustion engine during the starting phases, and to remove the pinion from the driving ring. once started.
- the function Z is composed in particular of the contactor, the movable core sliding in the contactor, the lever coupled to the movable core and straddled in launcher which slides along the axis of the rotor.
- grease is deposited between the moving core and the contactor to guarantee the smooth sliding and the holding over time of the mobile core.
- the grease tends to freeze, which slows the movement of the mobile core, or even blocks it. It is therefore important for the mobile core of the contactor to accumulate kinetic energy in order to avoid any risk of blockage.
- variable clearance between the pad and the launcher is minimal so that the idle stroke to be made up by a movable core of the switch before pushing the launcher is shorter.
- the kinetic energy accumulated by the movable core is then lower and thus its energy dissipation in the spring tooth against tooth, namely the spring which pushes the launcher towards a meshing with the ring of the combustion engine, is also lower .
- the tooth against tooth spring is less compressed.
- the kinematics of the pinion is then increased, namely the distance traveled by the launcher before the electric closing of the contactor is increased without having to modify the electric current consumed by the contactor during tooth-to-tooth contact.
- variable game pad is arranged at the front of the pad, on the starter side where the thrower is.
- the pad is in contact with support with the thrower on the back of the skate, on the opposite side to the starter side where the thrower is.
- the pad has a shape arranged to obtain a lever ratio of the control lever on the launcher, which ratio is constant or increasing on at least a portion of the launcher moving from the rest position to the active position.
- control lever and the launcher are arranged so that the lever ratio varies through a inflection point.
- the lever ratio is preferably between 1 and 1 .7.
- the distance between a front facet of the skate and a front support face of the launcher is in particular zero in the case where the range of ribs of this game is minimum and presents a positive game in the case where the range of ribs of this game is maximum.
- variable game skate in a recoil phase of the pivot axis corresponding to the recoil of the pivot axis of the control lever from the rest position to the lever support position without doing slide the launcher, the variable game skate increases but without reaching the necessary game to get the cut-off game to cut the power electric motor. Then, in a pivoting phase of the lever about its pivot axis in contact with the lever support, the variable game pad increases as the launcher slides forward to be maximum once the pinion in the active position. It is only when the pinion is in the active position, when the variable pad game is maximum, that the cut-off game is sufficient to cut off the power supply to the engine. .
- the front facet of the pad of the control lever comprises a front cam arranged to bear against a front support face of the launcher, this cam being arranged to come into contact with the front support facet of the launcher according to a contact zone which is at a distance from the pivot axis, which distance is variable, in particular increasing, when the control lever pivots to bring the launcher into the active position.
- the front cam has an observed profile along the axis of pivoting, which profile comprises at least one bulge, in particular a profile in at least one circular arc, preferably in several circular arcs with different radii of curvature.
- the rear facet of the shoe comprises in particular a rear cam having a profile observed along the axis of pivoting, which profile comprises at least one bulge, in particular a profile in at least one circular arc, preferably in several arcs with radii different curvature.
- the arcs of the profiles of the front and rear cams of the pad are advantageously eccentric.
- the bulge, in particular the circular arc, of the rear cam is further from the axis of pivoting of the control lever than the bulge, in particular the arc of a circle, of the front cam.
- the cam provides the control lever a substantially constant or even increasing ratio over a range of operation, which allows the available force on the pad is maximum at the start of the race. This makes it possible to better overcome the inertia of the launcher and increase the thrust force of the launcher against the crown of the combustion engine, which reduces the risk of milling.
- variable pad clearance is between 0.1 and 4 mm.
- the translation of the pivot axis of the control lever in the recoil phase is between 0.5 and 2 mm.
- the clearance gap between the fixed and movable kernels of the contactor obtained with the combination of the variable pad clearance and the translation of the pivot axis of the control lever in the advance phase, is comprised in 2 mm and 5 mm.
- the control lever comprises for example pins forming the pivot axis.
- control lever is made in one piece.
- the starter may include a slide in which the pivot axis of the control lever can move in translation.
- This slide may comprise an abutment arranged to stop the control lever in its lever support position.
- this stop is formed on an insert attached to the starter, in particular a plastic insert.
- the starter is arranged to start a number of cycles greater than 100,000, including 200 000.
- the starter can achieve for example a Stop-Start function.
- FIG. 1 shows, schematically and partially, a motor vehicle starter according to an exemplary implementation of the invention
- FIG. 1 shows a rotating electric machine forming a starter 1 of a motor vehicle.
- This starter 1 comprises, firstly, a rotor 2, also called armature, rotatable about a longitudinal axis X so as to drive a rotor shaft 6, and secondly, a stator 3, also called inductor , around the rotor 2.
- the stator 3 comprises a yoke 4 carrying a plurality of permanent magnets 5.
- the rotor 2 comprises a rotor body 7 arranged facing the magnets 5 of the stator 3, and a winding 8 wound in notches of the rotor body 7.
- the coil 8 comprises a plurality of conductive wires forming, on either side of the rotor body 7, a front bun 9 and a rear bun 10.
- the stator 3 and the rotor 2 are part of an electric motor 45.
- the rotor 2 is provided at the rear with a collector 1 2 comprising a plurality of contact pieces electrically connected to the winding 8.
- a group of brushes 1 3 and 14 is provided for the electrical supply of the winding 8, one of the brushes 1 3 being connected to the ground of the device 1 and another of the brushes 14 being connected to an electrical terminal 1 5 d ' a contactor 1 7 via a wire 1 6.
- the brushes 1 3 and 14 rub on the collector 12 when the rotor 2 is rotating.
- the contactor 1 7 comprises, in addition to the terminal 1 5 connected to the brush 14, a terminal 29 connected via an electrical connection element, in particular a wire 30, to a power supply of the vehicle, in particular a battery, not shown.
- the switch 17 is able to actuate a control lever 27 to move a launcher 19 from a rest position in which the launcher January 9 is located near the rotor 2 to an active driving position of the engine to combustion. In this active position, the launcher 19 is capable of meshing with a ring of the combustion engine to drive it in rotation.
- the launcher 19 comprises for example a freewheel 22 and a washer 23 defining between them a groove 24 for receiving the pad 25 of the control lever 27.
- the pad 25 is split so as to form a fork cooperating with the launcher.
- the launcher 19 comprises a front support facet 51, for example on the freewheel 22, and a rear support facet 52, for example on the washer 23.
- the launcher 19 can be realized in another way.
- the launcher 19 is slidably and rotatably mounted on a drive shaft 18.
- the launcher 19 further comprises a driving element formed by a toothed pinion 21 and intended to engage on a drive member of the combustion engine, not shown.
- This drive member is for example a crown.
- a gear reducer 20 is interposed between the rotor 2 and the drive shaft 18 so as to adapt the speed of the rotor 2 to the drive of the combustion engine.
- This gear reducer 20 comprises an assembly comprising a ring gear in which are disposed solar and satellite gears, in known manner.
- the contactor 17 is arranged to allow:
- control lever 27 is arranged to move the launcher 1 9 axially, the control lever being able to pivot about a pivot axis 50, this pivot axis 50 being movable over a predetermined linear stroke. from a rest position to a lever support position in which the lever is pivotable to bring the launcher 1 9 into the active position.
- the control lever 27 comprises studs 54 forming the pivot axis 50, as illustrated in FIG. 2.
- control lever 27 is made in one piece.
- the starter comprises a slide 55 in which the pivot axis 50 of the control lever can move in translation.
- This slide 55 may comprise a stop 56 arranged to stop the control lever in its lever support position.
- This stop is formed on an insert 57 attached to the starter, in particular a plastic insert.
- the electric shutdown of the electric motor 45 of the starter is obtained by the displacement of the axis of pivoting 50 over a distance Ja from its lever support positon towards its rest position of rest as well as by the displacement of the pad over a distance Jp from its position on the front bearing face of the launcher 51 towards the rear facet of the launcher 52, leaving the control lever 27 pivoted so as to obtain a cut-off clearance between the switch plate and the terminals 29 and 15, which results in the axial displacement towards the front of the coupling pin of the value of the cut game.
- the shoe 25 has a shape arranged to obtain a lever ratio of the control lever on the launcher, which ratio is constant or increasing on at least a portion of the launcher movement from the rest position to the active position.
- the lever ratio represents the ratio b / a between the distances a and b, where "a” is the vertical projection of the distance between the pivot axis 50 and the hinge 42 and "b” is the vertical projection of the distance between the shoe 25 and the pivot axis 50, as illustrated in FIG. 3.
- control lever and the launcher are arranged so that the lever ratio b / a varies through one or more inflection points.
- the mobile core 41 is at the maximum of its distance from the fixed core, and the control lever and the launcher are in the rest position.
- the lever ratio is preferably in the range of from 1.0 to 1.7.
- variable game pad increases but does not reach the game needed to get the cutoff game to cut the power of the engine. Then, in a pivoting phase of the lever about its pivot axis in contact with the lever support, the variable game pad increases as the launcher slides forward to be maximum once the pinion in the active position. It is only when the pinion is in the active position, when the variable pad game is maximum, that the cut-off game is sufficient to cut off the power supply to the engine.
- the front facet 61 of the pad of the control lever comprises a front cam 62 arranged to bear against a front bearing surface 51 of the launcher, this cam being arranged to come into contact with the front support facet 51 of the launcher according to a contact zone which is at a distance from the pivot axis, which distance is variable, in particular increasing, when the control lever 27 pivots to bring the launcher into the active position.
- the front cam 62 has an observed profile along the pivot axis 50, which profile comprises at least one bulge, in particular a profile in at least one circular arc.
- the rear facet 60 of the shoe comprises a rear cam 63 having an observed profile along the pivot axis, which profile comprises several circular arcs with different radii of curvature.
- the arcs of the profiles of the front cams 63 and rear 62 of the pad are advantageously eccentric.
- the arc of the rear cam 63 is further from the pivot axis of the control lever than the arc of the front cam 62.
- the cam 63 offers the control lever a substantially constant or even increasing ratio over an operating range, which allows the available force on the pad is maximum at the start of the race. This makes it possible to better overcome the inertia of the launcher and increase the thrust force of the launcher against the crown of the combustion engine, which reduces the risk of milling.
- variable pad clearance is between 0.1 mm and 4 mm.
- the translation of the pivot axis of the control lever in the recoil phase is between 0.5 mm and 2 mm.
- the gap clearance between the fixed and movable kernels of the contactor, obtained with the combination of the variable pad clearance and the translation of the pivot axis of the control lever in the advance phase, is comprised in 2 mm and 5 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1455824A FR3022594B1 (fr) | 2014-06-24 | 2014-06-24 | Demarreur de vehicule automobile |
| PCT/FR2015/051443 WO2015197931A1 (fr) | 2014-06-24 | 2015-06-02 | Démarreur de véhicule automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3161303A1 true EP3161303A1 (fr) | 2017-05-03 |
| EP3161303B1 EP3161303B1 (fr) | 2025-04-09 |
Family
ID=51519023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15736536.2A Active EP3161303B1 (fr) | 2014-06-24 | 2015-06-02 | Démarreur de véhicule automobile |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170145978A1 (fr) |
| EP (1) | EP3161303B1 (fr) |
| CN (1) | CN106460766B (fr) |
| FR (1) | FR3022594B1 (fr) |
| WO (1) | WO2015197931A1 (fr) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1254422A (fr) * | 1959-12-24 | 1961-02-24 | Dba Sa | Dispositif de commande électromagnétique du pignon d'un démarreur |
| JP3202068B2 (ja) * | 1992-07-14 | 2001-08-27 | マツダ株式会社 | Nc加工用工具移動経路の作成方法 |
| FR2751033B1 (fr) * | 1996-07-10 | 1998-09-18 | Valeo Equip Electr Moteur | Demarreur de vehicule a moteur comportant des moyens d'attelage perfectionnes entre le tirant du contacteur et la fourchette de commande du lanceur |
| KR20040093588A (ko) * | 2003-04-30 | 2004-11-06 | 발레오전장시스템스코리아 주식회사 | 차량용 스타터 모터의 하우징 체결구조 |
| FR2862721B1 (fr) * | 2003-10-31 | 2007-07-06 | Valeo Equip Electr Moteur | Dispositif de commande d'un lanceur de demarreur electrique |
| FR2872551B1 (fr) * | 2004-06-30 | 2008-09-19 | Valeo Equip Electr Moteur | Demarreur electrique de vehicule automobile |
| FR2930002A1 (fr) * | 2008-04-15 | 2009-10-16 | Valeo Equip Electr Moteur | Dispositif de demarrage pour moteur a combustion interne, notamment de vehicule automobile. |
| FR2978500B1 (fr) * | 2011-07-26 | 2015-03-13 | Valeo Equip Electr Moteur | Ensemble mobile lanceur - levier de commande pour engrenement avec une couronne de demarrage d'un moteur thermique et demarreur d'un moteur thermique comportant un tel ensemble |
-
2014
- 2014-06-24 FR FR1455824A patent/FR3022594B1/fr active Active
-
2015
- 2015-06-02 WO PCT/FR2015/051443 patent/WO2015197931A1/fr not_active Ceased
- 2015-06-02 CN CN201580034406.4A patent/CN106460766B/zh active Active
- 2015-06-02 US US15/321,499 patent/US20170145978A1/en not_active Abandoned
- 2015-06-02 EP EP15736536.2A patent/EP3161303B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3022594B1 (fr) | 2019-06-07 |
| FR3022594A1 (fr) | 2015-12-25 |
| EP3161303B1 (fr) | 2025-04-09 |
| CN106460766B (zh) | 2019-07-09 |
| US20170145978A1 (en) | 2017-05-25 |
| CN106460766A (zh) | 2017-02-22 |
| WO2015197931A1 (fr) | 2015-12-30 |
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