EP0833051B1 - Verfahren und Vorrichtung zum Abschalten eines Fahrzeuganlassers - Google Patents

Verfahren und Vorrichtung zum Abschalten eines Fahrzeuganlassers Download PDF

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Publication number
EP0833051B1
EP0833051B1 EP97402218A EP97402218A EP0833051B1 EP 0833051 B1 EP0833051 B1 EP 0833051B1 EP 97402218 A EP97402218 A EP 97402218A EP 97402218 A EP97402218 A EP 97402218A EP 0833051 B1 EP0833051 B1 EP 0833051B1
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EP
European Patent Office
Prior art keywords
starter
peak
duration
detected
signal
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
Application number
EP97402218A
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English (en)
French (fr)
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EP0833051A1 (de
Inventor
Gérard Vilou
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Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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    • 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
    • F02N11/0848—Circuits or control means specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter actuation
    • 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
    • F02N2200/00—Parameters used for control of starting apparatus
    • F02N2200/06—Parameters used for control of starting apparatus said parameters being related to the power supply or driving circuits for the starter
    • F02N2200/063—Battery voltage

Definitions

  • the present invention relates to a method and a device for the automatic shutdown of a starter of motor vehicle.
  • the duration of the undulations - and in particular of the decompression phases - then decreases rapidly.
  • the systems proposed to date have a polling window (D 1 to D 4 in FIG. 1) corresponding at least to the complete period of the previous ripple and do not take into account the reduced period of the decompression in progress .
  • D 4 in FIG. 1 it is only at the end of the last time delay (D 4 in FIG. 1), the duration of which corresponds at least to the duration of the preceding cycle, that one looks at whether a new ripple has occurred or not in this time window and that the decision is made to cut the starter.
  • An object of the invention is therefore to propose a new command which cuts the power to the starter faster.
  • Another object of the invention is to propose a solution that solves this problem.
  • the invention provides a method for the vehicle starter cut-off control automobile according to which the ripples of the supply voltage of this starter and we cut the starter when these ripples disappear, characterized in that for each new ripple, generates a polling period of such duration that the said period is intended to end substantially after the appearance of an extremum of said undulation and in that the starter is cut off when no extremum is detected in the last scan period.
  • the signal on which a voltage extremum is detected starter supply is a clipped signal and opens the polling period when this signal begins to take a non-zero value.
  • the invention also provides a device allowing the implementation of this process.
  • FIG. 2 illustrates a device for controlling the supply of a starter motor D, the electric motor M of which is mounted between a supply terminal B + at the voltage of the vehicle battery and ground.
  • This device comprises a contactor 1 mounted between the terminal B + and the motor M.
  • This contactor 1 is a relay actuated by a winding 2. One end of this winding 2 is connected to the common terminal of motor M and contactor 1. Its other end is connected on the one hand to the source of a MOSFET transistor 3 and secondly to a coil 5 connected to ground by its other end.
  • transistor 3 can be replaced by any other type of switch.
  • the drain of transistor 3 is connected to the supply terminal B + by means of an ignition key switch 6.
  • Its grid is connected to the output of a module command 9 which is itself activated by a control unit management 4, which is for example a microprocessor.
  • the power supply terminal B + is connected to a first input of the unit 4 - via the switch 6.
  • the voltage measured at this second input is the voltage U across this resistor 8.
  • unit 4 When unit 4 detects the closing of switch 6 on the voltage at its first input, it controls the closing of contactor 1 by module 9.
  • the Zener voltage of diode 7 is for this purpose chosen lower than the peak supply voltages of the starter, which correspond to the no-load voltage of the battery decreased by voltage drops in the battery and in cables under the effect of the absorbed intensity by the starter.
  • the peak voltage is generally between 10 and 11 volts.
  • Diode 7 is then for example chosen with a Zener voltage of the order of 9 to 10 Volts.
  • the voltage signal U collected at the terminals of resistance 8 is stripped of its component continuous and dips of the alternative component. Of the so throughout the duration of a voltage dip power supply (shown in dotted lines in the figure 3), the signal is no longer parasitized, which eliminates risk of error.
  • the detection of the actual start time D R is carried out as follows.
  • the unit 4 searches for the appearance of a zero voltage across the resistor 8, then determines the time T 0 where a positive voltage appears.
  • the unit 4 determines the time T 1 corresponding to the first peak voltage UC 1 .
  • This time T 1 can be determined in several ways, for example by checking the moment when the derivative of the voltage U vanishes - which can be achieved by using an analog differentiator circuit or by calculating the differential of the voltage U. can also more simply compare the maximum value UC i of a batch of one or more voltage measurements with respect to the maximum value UC i-1 of a previous batch; when UC i ⁇ UC i-1 , the peak has just been passed.
  • the unit 4 waits for the signal to cancel again and then becomes positive again in a time T 2 .
  • T c M. (T 1 -T 0 ), where M is a parameter beforehand set with a value between 1 and 2.
  • Unit 4 controls the starter supply cut by the module command 9.
  • Unit 4 stores the time T 3 corresponding to this peak UC 3 , then resumes the process by replacing T 0 with T 2 and T 1 with T 3 and T c with M (T 3 -T 2 ).
  • the cut-off order occurs after the last dip, as soon as one is beyond the instant T x before which the new voltage peak was expected.
  • Measurements U n are carried out periodically on the voltage U at different instants T n successive, the time interval between T n and T n + 1 corresponding to the sampling period of the microprocessor.
  • Unit 4 cuts the power supply to the starter motor (output 12a).
  • This incident may for example be due to a contact 1 closed, at a break in the power constituted by windings 2 and 5 or even when the starter is running without load (no meshing of the pinion in the crown, rupture of a mechanical component power, etc.).
  • T n is actually less than T x , we resume test 10.
  • T n is still not greater than T x .
  • the management unit 4 cuts the supply to the starter (output 15a). This indeed means that the positive ripple did not occur in the time it should have. This incident can have several causes: short-circuit starter, blocked starter, blocked thermal engine, insufficiently charged battery, etc.
  • T n is less than Tx
  • J is replaced by J + 1 and U 1 by the largest value between U 1 and U n , J being an increment index whose initial value is 0, U 1 being a parameter whose initialization value is 0.
  • a step 17 it is checked whether the new value of J is or is not equal to JMAX (which is for example chosen equal to 3).
  • step 14 again replacing n with n + 1.
  • T x is then replaced by T 0 + T c , where T c characterizes the duration of the time window which is opened from T 0 and in which it is checked whether U takes a peak value or not. For example, T c is initially given the value of 0.3 s.
  • n by n + 1, K by K + 1 K being an increment index whose initial value is 0
  • U 2 is a parameter whose initial value is zero
  • KMAX for example chosen equal to 3
  • step 21 is repeated by incrementing K and n and modifying the value of U 2 if necessary.
  • step 21 we replace in a step 24 U c by U 2 . If U 2 is greater than U c - which means that the voltage U increases - we replace in a step 24 U c by U 2 , then we start again from step 21 by checking beforehand whether or not T n is greater at time T x as defined in step 20 (test 25).
  • T n is actually greater than the time T x , this means that no peak has been detected in the time interval T c and the management unit cuts off the starter power supply (output 25a).
  • T n is less than T 1 + T 2 , where T 2 is a fixed time parameter, for example equal to 0.3 s, corresponding to a duration maximum during which the voltage U is positive.
  • T n becomes greater than T 1 + T 2 .
  • T n is actually less than T 1 + T 2 , we increment n (step 29) and we repeat test 27 until U n is zero.
  • step 30 T c is replaced by M (T 1 -T 0 ) and T x by T n - T 2 , then the process is resumed from step 14.
  • the duration of the time window in which a peak must intervene can be determined other than from the duration of the last decompression (which corresponds to the rising phase of positive undulations, that is to say to T 1 -T 0 , T 3 -T 2 , etc. in Figure 3).
  • the time T c can be determined from the total duration of the previous positive ripple, by applying to this duration a coefficient M of between 0.5 and 1.
  • the new time T 1 determined is that corresponding to the reappearance of the zero voltage.
  • the duration of the ripple being T 1 -T 0 , the vertex of the next ripple is approximately 0.5 times T 1 -T 0 .
  • a detected extremum is a peak of the supply voltage.
  • This extremum could variant be a minimum of said voltage the signal of voltage being for example clipped by values higher.
  • Voltage peak detection power supply is preferred, the voltage being more regular in the vicinity of ridges only near the minima.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Direct Current Motors (AREA)

Claims (10)

  1. Verfahren zur Steuerung der Abschaltung eines Kraftfahrzeuganlassers (D), bei dem die Schwingungswellen der Speisespannung (B+) dieses Anlassers (D) erfaßt werden und der Anlasser (D) abgeschaltet wird, wenn diese Schwingungswellen verschwinden, dadurch gekennzeichnet, daß für jede neue Schwingungswelle eine Abfrageperiode (Tc) generiert wird, deren Dauer so bemessen ist, daß die besagte Periode dazu bestimmt ist, in etwa nach dem Auftreten eines Extremwerts (UC1, UC3) der besagten Schwingungswelle zu enden, und daß der Anlasser (D) abgeschaltet wird, wenn in der letzten Abfrageperiode (Tc) kein Extremwert (UC1, UC3) erfaßt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Signal (U), an dem ein Extremwert (UC1, UC3) der Speisespannung des Anlassers (D) erfaßt wird, ein geglättetes Signal ist und daß die Abfrageperiode (Tc) eröffnet wird, wenn dieses Signal anfängt, einen Wert ungleich null anzunehmen.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Dauer (Tc) einer Abfrageperiode der an der vorangehenden Schwingungswelle bestimmten Dauer zwischen dem Zeitpunkt (T0, T2 usw.), zu dem das besagte Signal anfängt, einen Wert ungleich null anzunehmen, und dem Zeitpunkt (T1, T3 usw.) entspricht, der seinem Extremwert entspricht, wobei diese Dauer mit einem Koeffizienten (M) zwischen 1 und 2 multipliziert wird.
  4. Verfahren nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Dauer (Tc) einer Abfrageperiode ausgehend von der an der vorangehenden Schwingungswelle bestimmten Dauer bestimmt wird, während der das Signal Werte ungleich null annimmt, wobei diese Dauer mit einem Koeffizienten (M) zwischen 0,5 und 1 multipliziert wird.
  5. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Extremwert (UC1, UC3), der erfaßt wird, einer Spannungsspitze der Speisespannung entspricht.
  6. Verfahren nach den Ansprüchen 2 und 5 in Kombination, dadurch gekennzeichnet, daß das Signal (U), an dem ein Extremwert (UC1, UC3) erfaßt wird, der nach den unteren Werten begrenzten Speisespannung (B+) entspricht.
  7. Vorrichtung zur Steuerung der Abschaltung eines Kraftfahrzeuganlassers mit Mitteln (4, 7, 8), die die Erfassung der Schwingungswellen der Speisespannung dieses Anlassers ermöglichen, sowie mit Mitteln (4, 9) zur Abschaltung dieses Anlassers, wenn diese Schwingungswellen verschwinden, dadurch gekennzeichnet, daß sie Mittel (4) umfaßt, um für jede neue Schwingungswelle eine Abfrageperiode (Tc) zu generieren, deren Dauer so bemessen ist, daß die besagte Periode dazu bestimmt ist, in etwa nach dem Auftreten eines Extremwerts (UC1, UC3) der besagten Schwingungswelle zu enden, und Mittel (4, 9), um den Anlasser abzuschalten, wenn in der letzten Abfrageperiode (Tc) kein Extremwert erfaßt wird.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet daß sie Mittel (7), um die Spannung des Signals zu begrenzen, an dem ein Extremwert der Speisespannung des Anlassers erfaßt wird, sowie Mittel (4) umfaßt, um die Abfrageperiode zu eröffnen, wenn dieses Signal anfängt, einen Wert ungleich null anzunehmen.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Mittel zur Spannungsbegrenzung des Signals eine Zener-Diode (7) umfassen.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die besagten Mittel aus einer Brückenschaltung bestehen, die die besagte Zener-Diode (7) sowie einen zwischen der Anode der besagten Zener-Diode (7) und der Masse geschalteten Widerstand (8) umfaßt, wobei die Speisespannung des Anlassers (D) in die Kathode der besagten Zener-Diode eingespeist wird, wobei das Signal, an dem ein Extremwert der besagten Speisespannung erfaßt wird, die Spannung an den Klemmen des besagten Widerstands (8) ist.
EP97402218A 1996-09-27 1997-09-24 Verfahren und Vorrichtung zum Abschalten eines Fahrzeuganlassers Expired - Lifetime EP0833051B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9611792 1996-09-27
FR9611792A FR2754016B1 (fr) 1996-09-27 1996-09-27 Procede et dispositif pour la commande de la coupure d'un demarreur de vehicule automobile

Publications (2)

Publication Number Publication Date
EP0833051A1 EP0833051A1 (de) 1998-04-01
EP0833051B1 true EP0833051B1 (de) 2001-08-01

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EP97402218A Expired - Lifetime EP0833051B1 (de) 1996-09-27 1997-09-24 Verfahren und Vorrichtung zum Abschalten eines Fahrzeuganlassers

Country Status (7)

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US (1) US5992365A (de)
EP (1) EP0833051B1 (de)
JP (1) JP4049417B2 (de)
CN (1) CN1070580C (de)
BR (1) BR9704886A (de)
DE (1) DE69705908T2 (de)
FR (1) FR2754016B1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4108920B2 (ja) * 1997-07-17 2008-06-25 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 内燃機関の始動装置のための電流測定モジュール
US6553816B1 (en) 1998-09-18 2003-04-29 Alliedsignal Inc. System and method for providing engine diagnostic and prognostic information
JP3889551B2 (ja) * 2000-05-18 2007-03-07 三菱電機株式会社 車両用スタータの保護装置
JP2002106447A (ja) * 2000-10-02 2002-04-10 Mitsubishi Electric Corp スタータ保護装置
US6438487B1 (en) 2001-02-21 2002-08-20 Ford Global Technologies, Inc. Method and system for determining the operational state of a vehicle starter motor
US6435158B1 (en) 2001-02-21 2002-08-20 Ford Global Technologies, Inc. Method and system for preventing reverse running of internal combustion engine
DE10218011A1 (de) * 2002-04-23 2003-11-06 Bosch Gmbh Robert Verfahren und Vorrichtung zur Detektion der Beendigung eines Startvorgangs bei einer Brennkraftmaschine eines Kraftfahrzeugs
DE102008001304A1 (de) * 2008-04-22 2009-10-29 Robert Bosch Gmbh Verfahren und Vorrichtung zur Detektion des Betriebszustandes eines Verbrennungsmotors
CN102039822A (zh) * 2010-11-09 2011-05-04 郑州市锦飞汽车电气系统有限公司 汽车启动机控制保护器
DE102012216889A1 (de) * 2012-09-20 2014-05-15 Robert Bosch Gmbh Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
KR102323407B1 (ko) * 2017-09-08 2021-11-05 현대자동차주식회사 캠 샤프트 위치 센서 고장 시의 차량 시동 제어 방법
CN112901392B (zh) * 2021-02-04 2023-02-03 重庆隆鑫通航发动机制造有限公司 一种发动机的启动系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2700982C2 (de) * 1977-01-12 1984-03-08 Robert Bosch Gmbh, 7000 Stuttgart Schaltanordnung für elektrische Andrehmotoren
US4947051A (en) * 1988-01-22 1990-08-07 Mitsubishi Denki Kabushiki Kaisha Starter protector for an engine
FR2745336B1 (fr) * 1996-02-28 1998-05-07 Valeo Equip Electr Moteur Procede et dispositif pour la coupure d'un demarreur de vehicule automobile apres demarrage de son moteur thermique

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Publication number Publication date
CN1070580C (zh) 2001-09-05
CN1186162A (zh) 1998-07-01
BR9704886A (pt) 1999-01-26
DE69705908D1 (de) 2001-09-06
FR2754016A1 (fr) 1998-04-03
DE69705908T2 (de) 2002-04-04
US5992365A (en) 1999-11-30
FR2754016B1 (fr) 1998-12-18
EP0833051A1 (de) 1998-04-01
JP4049417B2 (ja) 2008-02-20
JPH10159694A (ja) 1998-06-16

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