EP0908620B1 - Procédé et dispositif de détection de la coupure d'une bougie de préchauffage d'un moteur Diesel de véhicule automobile - Google Patents
Procédé et dispositif de détection de la coupure d'une bougie de préchauffage d'un moteur Diesel de véhicule automobile Download PDFInfo
- Publication number
- EP0908620B1 EP0908620B1 EP19980402360 EP98402360A EP0908620B1 EP 0908620 B1 EP0908620 B1 EP 0908620B1 EP 19980402360 EP19980402360 EP 19980402360 EP 98402360 A EP98402360 A EP 98402360A EP 0908620 B1 EP0908620 B1 EP 0908620B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ratio
- kref
- currents
- cut
- kcal
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
- F02P19/027—Safety devices, e.g. for diagnosing the glow plugs or the related circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
- F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
- F02P19/021—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs characterised by power delivery controls
- F02P19/023—Individual control of the glow plugs
Definitions
- the present invention relates to a method and a device for detecting the cutout of a glow plug of a diesel engine of a motor vehicle.
- the invention relates to the detection of a cut spark plug for a vehicle diesel engine automobile, comprising at least two supply branches at least two glow plugs each.
- Such a method and such a device are intended for be associated with an electronic pre-postheating control unit.
- This pre-postheating electronic unit is in makes a power interface that fits into a system for checking the operation of the engine between the computer and the glow plugs of this engine.
- One of the functions of this box is to put under tension the glow plugs when receiving them the order of the calculator.
- such a box must detect all the spark plug and relay failures and transmit a status signal, i.e. a diagnostic signal, at calculator for the evaluation of the functioning of the function feeding these candles.
- a status signal i.e. a diagnostic signal
- the object of the invention is to propose a method and a device for detecting the cut of a candle preheating of a diesel engine of a motor vehicle which are simple, reliable and easy to implement in such a context.
- the baseline report is established during an initialization phase of the device at the first supply thereof, by reading the circulating currents in the supply branches during this phase initialization, calculation of the ratio of these currents and storing this report as a baseline report.
- the predetermined coefficient is equal to 0.7.
- the invention also has for object a detection device for the implementation of a such process.
- This case constitutes, as indicated above, a power interface that integrates into the engine operation control system between a injection computer designated by general reference 2 and the glow plugs, designated by the reference general 3 in this figure 1.
- these candles are distributed in pairs, candles 1 and 2 being associated in a first pair 3a and the candles 3 and 4 being associated in a second pair 3b.
- Each pair of candles is then powered by via a supply branch respectively 4 and 5, from electronic unit 1.
- This box receives as input the mass, the most power from the vehicle battery and a signal from command + APC.
- This box 1 actually includes a power module designated by the general reference 6, a control module candles designated by the general reference 7 and a safety and diagnostic module designated by the reference general 8.
- the spark plug control module 7 receives a signal by a command line (Co) 9 from injection computer 2, and this computer receives a signal diagnostic by a diagnostic line (Di) 10 emanating from safety and diagnostic module 8.
- the safety and diagnostic module fulfills several protective functions as previously indicated.
- it may include a device for detection of the cut-out of a glow plug, one of which exemplary embodiment is illustrated in FIG. 2.
- the detection device includes means 11 and 12 for measuring currents IB1 and IB2 circulating in branches 4 and 5, respectively, connecting the control module 7 of the power supply candles to them.
- This current information IB1 and IB2 are then transmitted to a central information processing unit designated by the general reference 13 in Figure 2, which is suitable for calculating a ratio K of these two currents and to deliver this calculated Kcal ratio to means of comparison 14 of it to a Kref reference report, to detect a cut candle if the ratio calculated by unit 13 differs from the baseline by at least one predetermined coefficient S.
- the corresponding input of the means of comparison receives Kref.S information established by calculation means 15, by multiplying the predetermined coefficient S stored in storage means 16 and Kref report stored in storage means 17.
- the comparison of this information then makes it possible to detect a cut candle.
- the Kref reference report can be established during a detection device initialization phase, at the first supply thereof, by calculating the ratio of currents flowing in branches 4 and 5, during this initialization phase and storage thereof.
- This coefficient constitutes a detection threshold which can for example be equal to 0.7.
- the processing unit information 13 determines if this is the device first power to determine if the device requires an initialization phase.
- this information processing unit 13 ensures in 22, the acquisition of the circulating currents in branches 4 and 5 of candle supply, ie for example the currents IB1 and IB2 respectively in branches 4 and 5.
- This Kref reference report is then stored during from step 24 for example in the storage means 17 described with reference to FIG. 2. This then allows the calculation means 15 described with reference to FIG. 2, to establish the Kref product. x S, S being stored in the means of storage 16 of FIG. 2.
- the central unit information processing 13 comes up in step 25, the currents flowing in branches 4 and 5, i.e. the currents IB1 and IB2.
- the calculated Kcal ratio differs from the ratio Kref established during the initialization phase.
- a detection threshold is then established using at coefficient S.
- the central information processing unit 13 compares the calculated ratio Kcal to the multiplied reference ratio Kref by the predetermined detection coefficient S to detect a spark plug cut in the event of a match and functioning normal in case of discrepancy.
Landscapes
- 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)
Description
- on mesure, à chaque démarrage du moteur, les courants circulant dans les deux branches,
- on calcule un rapport de ces deux courants, et
- on compare le rapport calculé à un rapport de référence pour détecter une bougie coupée si le rapport calculé diffère du rapport de référence d'au moins un coefficient prédéterminé.
- la Fig.1 représente un schéma synoptique illustrant la structure générale d'un boítier électronique de commande de pré-postchauffage Diesel;
- la Fig.2 représente un schéma synoptique illustrant la structure générale d'un exemple de réalisation d'un dispositif de détection selon l'invention; et
- la Fig.3 illustre un organigramme représentant un exemple de fonctionnement d'un procédé de détection selon l'invention.
- en fonctionnement normal : IB1 = KIB2,
- si l'une des bougies est coupée par exemple dans la branche d'alimentation 4 : IB1 ≤ à K.S. IB2,
- tandis que si les quatre bougies sont coupées : IB1 = IB2 = 0.
Claims (7)
- Procédé de détection de la coupure d'une bougie de préchauffage d'un moteur Diesel de véhicule automobile, comportant au moins deux branches (4,5) d'alimentation d'au moins deux bougies de préchauffage chacune, caractérisé en ce qu'il comporte les étapes suivantes :on mesure (en 25), à chaque démarrage du moteur, les courants (IB1, IB2) dans les deux branches,on calcule (en 26) un rapport de ces deux courants, eton compare (en 27) le rapport calculé (Kcal) à un rapport de référence (Kref) pour détecter une bougie coupée si le rapport calculé (Kcal) diffère du rapport de référence (Kref) d'au moins un coefficient prédéterminé (S).
- Procédé selon la revendication 1, caractérisé en ce qu'on établit le rapport de référence (Kref) lors d'une phase d'initialisation du dispositif à la première alimentation de celui-ci, par relevé (en 22) des courants (IB1,IB2) circulant dans les branches d'alimentation (4,5) lors de cette phase d'initialisation, calcul (en 23) du rapport de ces courants et stockage de ce rapport (en 24) en tant que rapport de référence (Kref).
- Procédé selon la revendication 1 ou 2, caractérisé en ce que le coefficient prédéterminé (S) est égal à 0,7.
- Dispositif de détection de la coupure d'une bougie de préchauffage d'un moteur Diesel de véhicule automobile, comportant au moins deux branches (4,5) d'alimentation d'au moins deux bougies de préchauffage chacune, caractérisé en ce qu'il comporte des moyens (11,12) de mesure des courants circulant dans les deux branches (4,5), à chaque démarrage du moteur, des moyens (13) de calcul d'un rapport (Kcal) de ces deux courants, et des moyens (14) de comparaison du rapport calculé (Kcal) à un rapport de référence (Kref) pour détecter une bougie coupée si le rapport calculé diffère du rapport de référence d'au moins un coefficient prédéterminé (S).
- Dispositif selon la revendication 4, caractérisé en ce qu'il comporte des moyens (16) de stockage du coefficient prédéterminé (S) et des moyens (17) de stockage du rapport de référence (Kref), délivré par les moyens de calcul (13) de ce rapport de référence, à partir des courants circulant dans les branches d'alimentation (4,5), lors d'une phase d'initialisation de ce dispositif à la première alimentation de celui-ci.
- Dispositif selon l'une quelconque des revendications 4 ou 5, caractérisé en ce que le coefficient prédéterminé (S) est égal à 0,7.
- Dispositif selon la revendication 4,5 ou 6, caractérisé en ce que les moyens de comparaison (14) reçoivent sur une entrée le rapport calculé (Kcal) et sur une autre entrée, le produit du rapport de référence (Kref) par le coefficient prédéterminé (S), établi par des moyens de calcul (15).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9712558 | 1997-10-08 | ||
FR9712558A FR2769343B1 (fr) | 1997-10-08 | 1997-10-08 | Procede et dispositif de detection de la coupure d'une bougie de prechauffage d'un moteur diesel de vehicule automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0908620A1 EP0908620A1 (fr) | 1999-04-14 |
EP0908620B1 true EP0908620B1 (fr) | 2002-06-12 |
Family
ID=9511975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980402360 Expired - Lifetime EP0908620B1 (fr) | 1997-10-08 | 1998-09-24 | Procédé et dispositif de détection de la coupure d'une bougie de préchauffage d'un moteur Diesel de véhicule automobile |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0908620B1 (fr) |
DE (1) | DE69805930T2 (fr) |
FR (1) | FR2769343B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008032482B3 (de) * | 2008-07-10 | 2009-11-12 | Continental Automotive Gmbh | Verfahren und Fehlerdiagnosegerät zum Erkennen einer Fehlfunktion an einer Glühanlage |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2621407A1 (de) * | 1976-05-14 | 1977-12-01 | Vdo Schindling | Einrichtung zum ueberwachen der funktion von gluehkerzen eines dieselmotors |
JPS58172472A (ja) * | 1982-04-02 | 1983-10-11 | Nippon Denso Co Ltd | 加熱体の断線検出方法 |
JPS59128981A (ja) * | 1983-01-12 | 1984-07-25 | Fujitsu Ten Ltd | デイ−ゼルエンジン用グロ−プラグの断線検知方法 |
JPS61104165A (ja) * | 1984-10-25 | 1986-05-22 | Mitsubishi Electric Corp | 内燃機関の予熱栓の断線検出装置 |
DE3720683A1 (de) * | 1987-06-23 | 1989-01-05 | Bosch Gmbh Robert | Vorrichtung und verfahren zur ansteuerung und kontrolle von elektrischen verbrauchern, insbesondere gluehkerzen |
JPH0799897B2 (ja) * | 1987-09-21 | 1995-10-25 | 三田工業株式会社 | 断線または短絡故障検知装置 |
-
1997
- 1997-10-08 FR FR9712558A patent/FR2769343B1/fr not_active Expired - Fee Related
-
1998
- 1998-09-24 DE DE1998605930 patent/DE69805930T2/de not_active Expired - Fee Related
- 1998-09-24 EP EP19980402360 patent/EP0908620B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2769343B1 (fr) | 2000-01-28 |
FR2769343A1 (fr) | 1999-04-09 |
DE69805930T2 (de) | 2003-01-09 |
EP0908620A1 (fr) | 1999-04-14 |
DE69805930D1 (de) | 2002-07-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1130202B1 (fr) | Ensemble de verrouillage d'une porte de véhicule automobile et procédé de test du bon fonctionnement d'un module de serrure de cet ensemble | |
EP2457105B1 (fr) | Procédé de diagnostic du fonctionnement d'un dispositif de coupure et de raccordement d'une batterie a un réseau de bord de véhicule automobile | |
EP0330561B1 (fr) | Régulateur plurifonction à cadencement synchrone de l'alternateur | |
FR2681302A1 (fr) | Dispositif de direction assistee. | |
EP0908620B1 (fr) | Procédé et dispositif de détection de la coupure d'une bougie de préchauffage d'un moteur Diesel de véhicule automobile | |
FR2904695A1 (fr) | Procede et dispositif de prevention d'un defaut de liaison a la masse d'une unite de calcul a microprocesseur | |
FR2987939A1 (fr) | Procede de gestion d'un systeme de vehicule automobile et systeme adapte a la mise en oeuvre du procede | |
EP2859217B1 (fr) | Procédé de démarrage d'un moteur à combustion interne, système et calculateur associés | |
FR3043604A1 (fr) | Systeme et procede de surveillance du couple moteur d'un vehicule electrique ou hybride | |
FR2987017A1 (fr) | Procede et dispositif de sauvegarde du fonctionnement d'un vehicule | |
FR2730814A1 (fr) | Dispositif de surveillance de l'etat de fusibles de protection d'organes fonctionnels d'un vehicule automobile | |
FR2760909A1 (fr) | Controle de demarreurs a commande electronique de vehicule automobile | |
FR2779828A1 (fr) | Procede de localisation des courts-circuits dans au moins un bus d'un reseau de transmission d'informations multiplexe et dispositif de diagnostic mettant en oeuvre le procede | |
WO2022263732A1 (fr) | Procede de protection d'un circuit de batterie avec detection d'une liaison electrique vissee defectueuse | |
EP0618360B1 (fr) | Dispositif de détection d'un défaut de fonctionnement d'un système d'allumage électronique d'un moteur, notamment de véhicule automobile | |
FR3067122A1 (fr) | Diagnostic d'une charge electrique de vehicule automobile | |
EP1069299B1 (fr) | Dispositif d'injection pour moteur à combustion interne | |
FR2721125A1 (fr) | Procédé et dispositif antivol pour équipements électroniques spécifiques d'un taxi. | |
EP3361627B1 (fr) | Alterno-démarreur, véhicule automobile et procédé de commande associé | |
FR2910932A1 (fr) | Procede de controle d'elements electriques d'un moteur. | |
FR3049738B1 (fr) | Dispositif anti-intrusion pour calculateur | |
FR2877750A1 (fr) | Procede d'activation/desactivation d'une fonction de pilotage d'un organe fonctionnel d'un vehicule automobile | |
FR3135666A1 (fr) | Procede de gestion d’une recharge electrique d’une batterie de puissance d’un vehicule | |
WO2023156718A1 (fr) | Procede de diagnostic d'un defaut de deconnexion d'un stockeur electrique de securite dans un reseau electrique de bord d'un vehicule electrifie | |
EP3015873B1 (fr) | Procédé de détection d'une tentative de by-pass frauduleux d'un compteur |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE ES GB IT LI PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 19990920 |
|
AKX | Designation fees paid |
Free format text: CH DE ES GB IT LI PT SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 20011030 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE ES GB IT LI PT SE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69805930 Country of ref document: DE Date of ref document: 20020718 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020912 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020916 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020930 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020930 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20020916 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021220 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
26N | No opposition filed |
Effective date: 20030313 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 746 Effective date: 20070118 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20080913 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20080827 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20081002 Year of fee payment: 11 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090924 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100401 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090924 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090924 |