EP0864746B1 - Contrôle de démarreurs à commande électronique de véhicule automobile - Google Patents
Contrôle de démarreurs à commande électronique de véhicule automobile Download PDFInfo
- Publication number
- EP0864746B1 EP0864746B1 EP98400555A EP98400555A EP0864746B1 EP 0864746 B1 EP0864746 B1 EP 0864746B1 EP 98400555 A EP98400555 A EP 98400555A EP 98400555 A EP98400555 A EP 98400555A EP 0864746 B1 EP0864746 B1 EP 0864746B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- starter
- circuit according
- voltage
- terminal
- control unit
- 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.)
- Expired - Lifetime
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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
- 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
- F02N11/08—Circuits or control means specially adapted for starting of engines
Definitions
- the present invention relates to the control of electronically controlled motor vehicle starters.
- Such a device is known from US-A-4,490,620.
- a starter D which includes an electric motor M mounted between a terminal B + power supply to battery voltage and ground.
- Electric motor supply is controlled by a contactor 1 mounted between said terminal B + and the motor M.
- This contactor 1 is a relay which includes a plunger core (not shown) actuated by a winding call 2 and a holding coil 3 for pushing and maintain a power contact in the closed position 1a.
- the call winding 2 is mounted between the end of the motor M which is opposite to the ground and the winding 3, said coil 3 being connected to ground by its end opposite.
- the coils 2 and 3 are connected to the source of a transistor 4, for example from field effect type, the drain of which is connected to the terminal B +, via the key switch contact 6.
- This transistor 4 is controlled in all or nothing or progressively, by a microprocessor 5 - also connected to the power supply terminal B + - which injects a control voltage on the gate of transistor 4.
- Ce microprocessor 5 is for example, as illustrated on Figure 1, integrated with relay 1 and transistor 4 to inside the starter housing. He can also be placed outside the starter, in any location of the vehicle.
- such a starter has the advantage of being autonomous, that is to say that it does not have no other electrical connection than those used by non-electronic conventional starters, namely a control cable allowing connection with the key contact 6, a cable for the power supply of the motor M, a return to ground by the carcass of the starter.
- the microprocessor 5 manages several functions. In particular, it controls the automatic starter stop when the vehicle's engine is sufficient launched. Also, it implements protections various; for example, it cuts power to the starter when overloads appear on the motor M or when said motor M is in overspeed; also it cuts the power to the starter when supply overvoltages are generated.
- a first solution that could be considered would consist in providing a sub-circuit allowing, during measurement operations, supplying the coil (s) contactor in parallel with the supply by the transistor 4.
- the solution according to the invention consists of a device for controlling a starter switch motor vehicle with a management unit which manages the starter power supply and which includes means for detecting operating anomalies and cut the starter power when such anomaly is detected, characterized in that the unit of management further comprises means for detecting on a input intended to be connected to the contact switch of the vehicle a signal which commands the inhibition of protective functions.
- This device is used with a circuit intended for be mounted between the management unit and the switch of the vehicle and characterized in that it comprises means to generate a signal which controls the inhibition of protection functions of the management unit.
- FIG 2 there is shown a circuit 7 which is intended to be mounted between the contact switch 6 and an analog / digital converter input of the microprocessor 5 when you want to be able to perform a control on the starter.
- This circuit 7 allows, upon closure of the contact switch 6, to generate a signal intended to be recognized by microprocessor 5, this being programmed to control when it detects said signal, inhibition of the different functions of starter protection.
- This inhibit control signal can be all kinds for example a voltage signal or of intensity recognizable by its amplitude and / or its duration and / or its frequency and / or its number of pulses and / or by special binary coding, etc.
- the signal generated consists of a voltage calibrated at a level U 0 , which, when the contact switch 6 is closed, is sent for a duration T 0 at the input of the microprocessor 5.
- U 0 is chosen to be greater than that of the minimum operating voltage of the microprocessor 5 and less than the value of the lowest voltage which may appear on the vehicle before the starter is started.
- U 0 is equal to 6 +/- 0.5 volts.
- the duration T 0 during which the input voltage of the microprocessor is maintained at level U 0 is chosen to be large enough to prevent parasitic variations of said voltage from being liable to be confused by the microprocessor 5 with the inhibition control signal .
- T 0 can for example take the value of 20 milliseconds or a higher value.
- the circuit 7 includes a relay 8 whose switch 9 is mounted between on the one hand a terminal F intended to be connected to the contact switch 6 of a starter and other share a terminal E intended to be connected to an input of the microprocessor 5.
- terminal E is for example intended to be connected to the starter terminal D which is normally connected to switch 6.
- the coil of relay 8 - referenced by 10 - is mounted between earth and terminal F, to which it is connected by a resistor R 1 .
- Circuit 7 also includes a Zener diode 11 which is mounted between ground and terminal E, being mass passing towards said terminal.
- a resistor R 2 is mounted in parallel with the switch 8 between the terminals E and F.
- the circuit 7 also includes a capacitor 12 mounted in parallel between the two ends of the winding 8.
- the operator mounts circuit 7 between the contact switch 6 and the starter terminal D which is normally connected to said switch.
- the Zener diode 11 imposes a voltage U 0 at the input of the microprocessor 5, while the relay 8 closes.
- the capacitor 12 allows, if the mechanical inertia of the relay 8 is not sufficient for the switch 9 to close after T 0 , to increase the closing time of said switch.
- the voltage received at the input of the microprocessor 5 when the switch is closed contact 6 is of the type illustrated in FIG. 3.
- the microprocessor 5 implements, each time that it detects the closing of the contact switch 6, a comparison processing on the value of the voltage which it receives as an input to verify whether this voltage takes or not the value U 0 during the duration T 0 (step A in FIG. 4).
- the microprocessor 5 activates the control process of transistor 4, as well as the different protection functions (step B).
- the microprocessor 5 controls the inhibition of the protection functions and the closing of the transistor 4 (step C).
- the solution which has just been described which consists to use a muting signal generation circuit protective functions, has the advantage of allow the starter to be powered off electronic protection functions without requiring additional connectors.
- the interface circuit which has just been described can also be integrated into a test device.
- a testing device could be used indifferently to test the electronic starters and conventional starters.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Electric Motors In General (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Motor And Converter Starters (AREA)
Description
- la figure 1, déjà analysée, représente schématiquement un démarreur comportant un dispositif de commande électronisé ;
- la figure 2 est un schéma analogue à celui de la figure 1 sur lequel on a représenté un démarreur du type de celui de la figure 1 et un circuit pour la génération d'un signal de commande d'inhibition des fonctions de protection du démarreur monté entre l'unité de gestion du démarreur et l'interrupteur de contact du véhicule ;
- la figure 3 est un graphe sur lequel on a représenté un exemple de signal de commande d'inhibition possible ;
- la figure 4 est un organigramme qui présente différentes étapes du traitement mis en oeuvre par le microprocesseur du démarreur de la figure 2.
Claims (10)
- Dispositif pour la commande d'un contacteur de démarreur de véhicule automobile comportant une unité de gestion (5) qui gère l'alimentation du démarreur (D) et qui comporte des moyens pour détecter des anomalies de fonctionnement et couper l'alimentation du démarreur lorsqu'une telle anomalie est détectée, caractérisé en ce que l'unité de gestion (5) comporte en outre des moyens pour détecter sur une entrée (E) destinée à être reliée à l'interrupteur de contact (6) du véhicule un signal qui commande l'inhibition des fonctions de protection.
- Circuit (7) caractérisé en ce qu'il est destiné à être monté entre une unité de gestion (5) qui gère l'alimentation d'un démarreur de véhicule automobile et un interrupteur de contact (6) du véhicule et en ce qu'il comporte des moyens (8, 11, 12) pour générer un signal qui commande l'inhibition des fonctions de protection de l'unité de gestion.
- Circuit selon la revendication 2, caractérisé en ce que lesdits moyens (8, 11, 12) génèrent pendant un temps prédéterminé, à la fermeture de l'interrupteur de contact (6), une tension calibrée à un niveau donné (U0).
- Circuit selon la revendication 3, caractérisé en ce que cette tension (U0) est supérieure à la tension minimale de fonctionnement de l'unité de gestion et inférieure à la tension la plus faible pouvant apparaítre sur le véhicule avant la mise en marche du démarreur.
- Circuit selon la revendication 4, caractérisé en ce que cette tension (U0) est égale à 6 +/- 0,5 volts.
- Circuit selon l'une des revendication 3 à 5, caractérisé en ce que le temps (T0) pendant lequel ladite tension est maintenue audit niveau calibré (U0) est de 20 millisecondes ou supérieur.
- Circuit selon l'une des revendication 3 à 6, caractérisé en ce qu'il comporte un relais (8) dont l'interrupteur (9) est monté entre d'une part une borne (F) destinée à être reliée à l'interrupteur de contact (6) d'un démarreur et d'autre part une borne (E) destinée à être reliée à une entrée de l'unité de gestion (5).
- Circuit selon la revendication 7, caractérisé en ce que le bobinage (10) du relais (8) est monté entre la masse et la borne (F) destinée à être reliée à l'interrupteur de contact (6).
- Circuit selon l'une des revendications 7 et 8, caractérisé en ce qu'il comporte également une diode Zéner (11) qui est montée entre la masse et la borne (E) destinée à être reliée à une entrée de l'unité de gestion (5), en étant passante de la masse vers ladite borne (E).
- Circuit selon l'une des revendications 7 à 9, caractérisé en ce qu'il comporte également un condensateur (12) monté en parallèle entre les deux extrémités du bobinage du relais (8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9703091 | 1997-03-14 | ||
FR9703091A FR2760909B1 (fr) | 1997-03-14 | 1997-03-14 | Controle de demarreurs a commande electronique de vehicule automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0864746A1 EP0864746A1 (fr) | 1998-09-16 |
EP0864746B1 true EP0864746B1 (fr) | 2002-12-11 |
Family
ID=9504781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98400555A Expired - Lifetime EP0864746B1 (fr) | 1997-03-14 | 1998-03-10 | Contrôle de démarreurs à commande électronique de véhicule automobile |
Country Status (5)
Country | Link |
---|---|
US (1) | US6078486A (fr) |
EP (1) | EP0864746B1 (fr) |
DE (1) | DE69809985T2 (fr) |
ES (1) | ES2189105T3 (fr) |
FR (1) | FR2760909B1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2808630B1 (fr) * | 2000-04-13 | 2002-10-25 | Peugeot Citroen Automobiles Sa | Circuit d'alimentation electrique a tension multiple pour vehicule automobile |
FR2814503B1 (fr) * | 2000-09-28 | 2002-11-22 | Valeo Equip Electr Moteur | Dispositif de commande d'un demarreur notamment de vehicule automobile |
JP3831191B2 (ja) * | 2000-10-13 | 2006-10-11 | 株式会社東海理化電機製作所 | 車両用エンジン始動装置及びエンジン始動方法 |
DE102004029895B4 (de) * | 2004-06-17 | 2014-03-13 | Volkswagen Ag | Vorrichtung und Verfahren zur Steuerung des Anlassvorgangs in einem Kraftfahrzeug |
US20080264374A1 (en) * | 2007-04-30 | 2008-10-30 | Caterpillar Inc. | Fail-safe starter control system |
FI123903B (en) * | 2012-10-24 | 2013-12-13 | Waertsilae Finland Oy | Internal combustion engine fluid detection system |
SE542023C2 (en) * | 2018-06-20 | 2020-02-11 | Scania Cv Ab | An arrangement and a method for protection against abnormal currents in a starter motor circuit |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3870954A (en) * | 1973-10-09 | 1975-03-11 | Rca Corp | Starter system fault detector |
US3996499A (en) * | 1974-09-09 | 1976-12-07 | Westinghouse Electric Corporation | Zener diode effect on long acceleration module |
US4231073A (en) * | 1978-11-08 | 1980-10-28 | Suchko Adam J | Automatic improved engine control system containing both solid state circuits and relays |
US4490620A (en) * | 1983-09-12 | 1984-12-25 | Eaton Corporation | Engine starter protective and control module and system |
JPH076469B2 (ja) * | 1987-05-28 | 1995-01-30 | 三菱電機株式会社 | エンジン自動始動方法および装置 |
JPH01253566A (ja) * | 1988-04-01 | 1989-10-09 | Mitsubishi Electric Corp | スタータ保護装置 |
US5343351A (en) * | 1991-11-18 | 1994-08-30 | Electro-Tech, Inc. | Starter motor protection circuit with relay protection |
US5583420A (en) * | 1993-10-01 | 1996-12-10 | Lucas Aerospace Power Equipment Corporation | Microprocessor controller for starter/generator |
US5701089A (en) * | 1995-10-12 | 1997-12-23 | Autozone, Inc. | Alternator/starter testing device |
-
1997
- 1997-03-14 FR FR9703091A patent/FR2760909B1/fr not_active Expired - Fee Related
-
1998
- 1998-03-10 EP EP98400555A patent/EP0864746B1/fr not_active Expired - Lifetime
- 1998-03-10 DE DE69809985T patent/DE69809985T2/de not_active Expired - Lifetime
- 1998-03-10 ES ES98400555T patent/ES2189105T3/es not_active Expired - Lifetime
- 1998-03-13 US US09/042,258 patent/US6078486A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2760909A1 (fr) | 1998-09-18 |
DE69809985T2 (de) | 2003-07-24 |
EP0864746A1 (fr) | 1998-09-16 |
ES2189105T3 (es) | 2003-07-01 |
DE69809985D1 (de) | 2003-01-23 |
US6078486A (en) | 2000-06-20 |
FR2760909B1 (fr) | 1999-05-28 |
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