EP2327872A2 - Method for heating a glow plug - Google Patents
Method for heating a glow plug Download PDFInfo
- Publication number
- EP2327872A2 EP2327872A2 EP10013652A EP10013652A EP2327872A2 EP 2327872 A2 EP2327872 A2 EP 2327872A2 EP 10013652 A EP10013652 A EP 10013652A EP 10013652 A EP10013652 A EP 10013652A EP 2327872 A2 EP2327872 A2 EP 2327872A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- glow plug
- characteristic
- value
- glow
- deviation
- 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.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 230000006870 function Effects 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 3
- 230000002123 temporal effect Effects 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
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- 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
- F02P19/022—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 using intermittent current supply
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- 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
- F02P19/025—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 with means for determining glow plug temperature or glow plug resistance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
Definitions
- the invention relates to a method for heating a glow plug to a desired temperature by means of an annealing program, which predetermines the time course of an effective voltage generated by pulse width modulation, which is applied to the glow plug for heating.
- Modern glow plug control units are equipped with a library of different annealing programs, each optimized for a particular type of glow plug, ie a specific series.
- a glow plug control device for glow plugs of different series of construction can be used and still be tailored to the glow requirements of the engine and the performance of the respective glow plug annealing operation can be realized.
- Efficient glow plug control can optimize the combustion performance of a motor and increase the life of a glow plug.
- the object of the present invention is to show a way in which glow plugs can be controlled even more efficiently.
- the properties of glow plugs in a series of construction differ within the scope of manufacturing tolerances. Therefore, the glow programs stored in the conventional control units take into account both glow plugs in the upper and in the lower tolerance range. This variation of the characteristics of glow plugs in the context of manufacturing tolerances prevents in conventional controls optimum adaptation of the glow plug operation to the requirements of the engine or the performance of the glow plugs. By determining the position of a given glow plug within the manufacturing tolerance range and taken into account in the control, the heating of a glow plug can be optimized. This is especially true for ceramic glow plugs, where tight manufacturing tolerances can be maintained only with great effort. Therefore, according to the invention, a deviation of a value of a characteristic of a glow plug from a nominal value typical for the series of construction is determined, and the annealing program is adjusted as a function of the deviation.
- a glow plug can be heated to a desired target temperature with greater accuracy.
- the influence of production-related tolerances, such as the scattering of the cold resistance, on the candle temperature can therefore be reduced.
- the operation of a glow plug can therefore be adapted even better to the requirements of an engine. This has an advantageous effect on the cold running and emission behavior of the engine.
- the parameter whose deviation is determined by a nominal value typical for the series of construction is preferably an electrical parameter. Suitable examples are the electrical resistance, capacitance or inductance. The used However, the characteristic does not necessarily have to be an electrical variable. For example, the heat capacity of the glow tip can be used as a parameter.
- the electrical parameter can be, for example, the electrical resistance of the glow plug at a predetermined reference temperature.
- the temperature of a glow plug matches the temperature of the cooling water.
- Temperature sensors for measuring the temperature of the cooling water are generally present in motor vehicles anyway, so that the cooling water temperature can be made available to a glow plug control device without additional additional expenditure.
- the cooling water temperature can be used as a reference temperature before heating a glow plug and the electrical resistance of the cold glow plug with the nominal value of the electrical resistance of a glow plug of this series at the relevant temperature are compared.
- the deviation of which is determined by a nominal value typical for the construction series
- a change in resistance occurring when the glow plug is heated up is used for this purpose.
- a resistance measurement can be carried out in each case at the beginning and at the end of a current pulse.
- this measurement can be supplemented by a measurement at the end of the pulse.
- the deviation of the value of the electrical quantity from the nominal value may be based on the adaptation of the annealing program as absolute deviation or as relative deviation.
- the deviation of the parameter from the nominal value is preferably determined as a relative deviation, and in the annealing program the respective value of the effective voltage is changed proportionally to the relative deviation. If, for example, it is determined that the electrical cold resistance of the glow plug is one percent greater than the nominal value, the value of the RMS voltage can be increased by one percent.
- the power relevant to the heating of the glow plug is quadratically dependent on the voltage, a change in the effective voltage proportional to the relative deviation is usually sufficient because the relative deviations are small.
- the value of the electrical characteristic of the glow plug can be measured by the manufacturer and stored in a data carrier attached to the glow plug.
- the value of the electrical characteristic can be on a label of the glow plug or an instruction leaflet and manually entered into the glow plug control device during assembly of the glow plug. It is also possible to store the value of the electrical parameter in a memory attached to the glow plug, which can be read by the glow plug control unit.
- the value of the electrical characteristic is determined by the glow plug control device by a measurement or provided by the manufacturer, it is preferable to store the value of the electrical characteristic of the glow plug in the glow plug control device and to use for several heating operations. Even if the parameter is measured again for each heating process, it is possible that an erroneous value of the electrical parameter is determined by an unusual operating state of the vehicle, for example, a recent engine operation. By only changing the value of the electrical characteristic in the glow plug controller memory when multiple measurements provide consecutive results, the risk of erroneous adjustment of the annealing program can be reduced.
- a glow plug control device for carrying out a method according to the invention has a switch for generating an effective voltage for application to a glow plug by pulse width modulation of a vehicle electrical system voltage of a motor vehicle, a memory in which glow programs for different series of glow plugs are stored, a control unit which in operation controls the switch operated according to one of the stored Glühprogramme, and a sensor for measuring a characteristic of a glow plug.
- the glow plug control device largely corresponds to commercially available glow plug control devices, so that a description in this regard is unnecessary.
- the glow plug control device is set up in such a way that, during operation, a production-related deviation of a value of a characteristic of the glow plug from a nominal value typical for the construction series is determined, and the glow program provided for glow plugs of this series of construction is adjusted as a function of the deviation.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Resistance Heating (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Aufheizen einer Glühkerze auf eine Solltemperatur mittels eines Glühprogramms, das den zeitlichen Verlauf einer durch Pulsweitenmodulation erzeugten Effektivspannung vorgibt, die zum Aufheizen an die Glühkerze angelegt wird.The invention relates to a method for heating a glow plug to a desired temperature by means of an annealing program, which predetermines the time course of an effective voltage generated by pulse width modulation, which is applied to the glow plug for heating.
Modernde Glühkerzensteuergeräte sind mit einer Bibliothek von verschiedenen Glühprogrammen ausgestattet, die jeweils für einen bestimmten Glühkerzentyp, d. h. eine bestimmte Bauserie optimiert sind. Vorteilhaft kann auf diese Weise ein Glühkerzensteuergerät für Glühkerzen verschiedener Bauserien verwendet werden und dennoch eine auf den Glühbedarf des Motors und die Leistungsfähigkeit der jeweiligen Glühkerze abgestimmter Glühbetrieb realisiert werden. Durch eine effiziente Glühkerzensteuerung kann das Verbrennungsverhalten eines Motors optimiert und die Lebensdauer einer Glühkerze erhöht werden.Modern glow plug control units are equipped with a library of different annealing programs, each optimized for a particular type of glow plug, ie a specific series. Advantageously, in this way, a glow plug control device for glow plugs of different series of construction can be used and still be tailored to the glow requirements of the engine and the performance of the respective glow plug annealing operation can be realized. Efficient glow plug control can optimize the combustion performance of a motor and increase the life of a glow plug.
Aufgabe der vorliegenden Erfindung ist es, einen Weg aufzuzeigen, wie Glühkerzen noch effizienter gesteuert werden können.The object of the present invention is to show a way in which glow plugs can be controlled even more efficiently.
Diese Aufgabe wird durch ein Verfahren mit den im Anspruch 1 angegebenen Merkmalen sowie durch ein Verfahren mit den Merkmalen des Anspruchs 10 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand von Unteransprüchen.This object is achieved by a method having the features specified in claim 1 and by a method having the features of claim 10. Advantageous developments of the invention are the subject of dependent claims.
Die Eigenschaften von Glühkerzen einer Bauserie weichen im Rahmen von Fertigungstoleranzen voneinander ab. Die in den herkömmlichen Steuergeräten gespeicherten Glühprogramme berücksichtigen deshalb sowohl Glühkerzen im oberen als auch im unteren Toleranzbereich. Diese Streuung der Eigenschaften von Glühkerzen im Rahmen von Fertigungstoleranzen verhindert bei herkömmlichen Steuerungen eine optimale Anpassung des Glühkerzenbetriebs an die Anforderungen des Motors oder das Leistungsvermögen der Glühkerzen. Indem die Lage einer gegebenen Glühkerze innerhalb des fertigungsbedingten Toleranzbereichs bestimmt und bei der Ansteuerung berücksichtigt wird, lässt sich das Aufheizen einer Glühkerze optimieren. Dies gilt insbesondere für keramische Glühkerzen, bei denen sich enge Fertigungstoleranzen nur mit großem Aufwand einhalten lassen. Erfindungsgemäß wird deshalb eine Abweichung eines Werts einer Kenngröße einer Glühkerze von einem für die Bauserie typischen Nennwert bestimmt und das Glühprogramm als Funktion der Abweichung angepasst.The properties of glow plugs in a series of construction differ within the scope of manufacturing tolerances. Therefore, the glow programs stored in the conventional control units take into account both glow plugs in the upper and in the lower tolerance range. This variation of the characteristics of glow plugs in the context of manufacturing tolerances prevents in conventional controls optimum adaptation of the glow plug operation to the requirements of the engine or the performance of the glow plugs. By determining the position of a given glow plug within the manufacturing tolerance range and taken into account in the control, the heating of a glow plug can be optimized. This is especially true for ceramic glow plugs, where tight manufacturing tolerances can be maintained only with great effort. Therefore, according to the invention, a deviation of a value of a characteristic of a glow plug from a nominal value typical for the series of construction is determined, and the annealing program is adjusted as a function of the deviation.
Vorteilhaft kann deshalb mit einem erfindungsgemäßen Verfahren eine Glühkerze mit einer größeren Genauigkeit auf eine gewünschte Zieltemperatur aufgeheizt werden. Der Einfluss fertigungsbedingter Toleranzen, wie beispielsweise die Streuung des Kaltwiderstands, auf die Kerzentemperatur kann deshalb verringert werden. Mit einem erfindungsgemäßen Verfahren kann der Betrieb einer Glühkerze deshalb noch besser an die Anforderungen eines Motors angepasst werden. Dies wirkt sich vorteilhaft auf das Kaltlauf- und Emissionsverhalten des Motors aus.Advantageously, therefore, with a method according to the invention, a glow plug can be heated to a desired target temperature with greater accuracy. The influence of production-related tolerances, such as the scattering of the cold resistance, on the candle temperature can therefore be reduced. With a method according to the invention, the operation of a glow plug can therefore be adapted even better to the requirements of an engine. This has an advantageous effect on the cold running and emission behavior of the engine.
Bevorzugt ist die Kenngröße deren Abweichung von einem für die Bauserie typischen Nennwert bestimmt wird, eine elektrische Kenngröße. Geeignet sind beispielsweise der elektrische Widerstand, Kapazität oder Induktivität. Die verwendete Kenngröße muss aber nicht unbedingt eine elektrische Größe sein. Beispielsweise kann auch die Wärmekapazität der Glühspitze als Kenngröße verwendet werden.The parameter whose deviation is determined by a nominal value typical for the series of construction is preferably an electrical parameter. Suitable examples are the electrical resistance, capacitance or inductance. The used However, the characteristic does not necessarily have to be an electrical variable. For example, the heat capacity of the glow tip can be used as a parameter.
Die elektrische Kenngröße, deren Abweichung von einem für die Bauserie typischen Nennwert bestimmt wird, kann beispielsweise der elektrische Widerstand der Glühkerze bei einer vorgegebenen Referenztemperatur sein. Vor dem Beginn des Aufheizens einer Glühkerze kann im Allgemeinen angenommen werden, dass die Temperatur einer Glühkerze mit der Temperatur des Kühlwassers übereinstimmt. Temperatursensoren zur Messung der Kühlwassertemperatur sind bei Kraftfahrzeugen in der Regel ohnehin vorhanden, so dass die Kühlwassertemperatur einem Glühkerzensteuergerät ohne zusätzlichen Mehraufwand zur Verfügung gestellt werden kann. Vorteilhaft kann deshalb vor dem Aufheizen einer Glühkerze die Kühlwassertemperatur als Referenztemperatur verwendet werden und der elektrische Widerstand der kalten Glühkerze mit dem Nennwert des elektrischen Widerstands einer Glühkerze dieser Bauserie bei der betreffenden Temperatur verglichen werden.The electrical parameter, the deviation of which is determined by a nominal value typical for the series, can be, for example, the electrical resistance of the glow plug at a predetermined reference temperature. Before starting to heat a glow plug, it can be generally assumed that the temperature of a glow plug matches the temperature of the cooling water. Temperature sensors for measuring the temperature of the cooling water are generally present in motor vehicles anyway, so that the cooling water temperature can be made available to a glow plug control device without additional additional expenditure. Advantageously, therefore, the cooling water temperature can be used as a reference temperature before heating a glow plug and the electrical resistance of the cold glow plug with the nominal value of the electrical resistance of a glow plug of this series at the relevant temperature are compared.
Als elektrische Kenngröße, deren Abweichung von einem für die Bauserie typischen Nennwert bestimmt wird, kann beispielsweise auch eine beim Aufheizen der Glühkerze auftretende Widerstandsänderung verwendet werden. Bevorzugt wird hierfür die Widerstandsänderung während eines Strompulses vorgegebener Dauer verwendet. Beispielsweise kann eine Widerstandsmessung jeweils am Anfang und am Ende eines Strompulses durchgeführt werden. Unabhängig davon, welche elektrische Kenngröße für das erfindungsgemäße Verfahren verwendet wird, ist es im Allgemeinen vorteilhaft, zur Bestimmung ihres Wertes zumindest zu Beginn eines Pulses eine Messung durchzuführen. Gegebenenfalls kann diese Messung durch eine Messung am Ende des Pulses ergänzt werden.As an electrical parameter, the deviation of which is determined by a nominal value typical for the construction series, it is also possible, for example, to use a change in resistance occurring when the glow plug is heated up. Preferably, the resistance change during a current pulse of predetermined duration is used for this purpose. For example, a resistance measurement can be carried out in each case at the beginning and at the end of a current pulse. Regardless of which electrical parameter is used for the method according to the invention, it is generally advantageous to carry out a measurement to determine its value at least at the beginning of a pulse. Optionally, this measurement can be supplemented by a measurement at the end of the pulse.
Die Abweichung des Werts der elektrischen Größe von dem Nennwert kann der Anpassung des Glühprogramms als absolute Abweichung oder als relative Abweichung zugrunde gelegt werden. Bevorzugt wird die Abweichung der Kenngröße von dem Nennwert als relative Abweichung ermittelt und bei dem Glühprogramm der jeweilige Wert der Effektivspannung proportional zu der relativen Abweichung geändert. Wird also beispielsweise festgestellt, dass der elektrische Kaltwiderstand der Glühkerze ein Prozent größer als der Nennwert ist, kann bei dem Glühprogramm der Wert der Effektivspannung jeweils um ein Prozent erhöht werden. Obwohl die für das Aufheizen der Glühkerze maßgebliche Leistung quadratisch von der Spannung abhängt, ist eine Änderung der Effektivspannung proportional zu der relativen Abweichung in der Regel ausreichend, da die relativen Abweichungen klein sind.The deviation of the value of the electrical quantity from the nominal value may be based on the adaptation of the annealing program as absolute deviation or as relative deviation. The deviation of the parameter from the nominal value is preferably determined as a relative deviation, and in the annealing program the respective value of the effective voltage is changed proportionally to the relative deviation. If, for example, it is determined that the electrical cold resistance of the glow plug is one percent greater than the nominal value, the value of the RMS voltage can be increased by one percent. Although the power relevant to the heating of the glow plug is quadratically dependent on the voltage, a change in the effective voltage proportional to the relative deviation is usually sufficient because the relative deviations are small.
Der Wert der elektrischen Kenngröße der Glühkerze kann vom Hersteller gemessen und in einem der Glühkerze beigefügten Datenträger gespeichert werden. Beispielsweise kann der Wert der elektrischen Kenngröße auf einem Etikett der Glühkerze oder einem Beipackzettel stehen und bei der Montage der Glühkerze manuell in das Glühkerzensteuergerät eingegeben werden. Möglich ist es auch, den Wert der elektrischen Kenngröße in einem an der Glühkerze befestigten Speicher abzulegen, der von dem Glühkerzensteuergerät ausgelesen werden kann.The value of the electrical characteristic of the glow plug can be measured by the manufacturer and stored in a data carrier attached to the glow plug. For example, the value of the electrical characteristic can be on a label of the glow plug or an instruction leaflet and manually entered into the glow plug control device during assembly of the glow plug. It is also possible to store the value of the electrical parameter in a memory attached to the glow plug, which can be read by the glow plug control unit.
Unabhängig davon, ob der Wert der elektrischen Kenngröße von dem Glühkerzensteuergerät durch eine Messung ermittelt wird oder vom Hersteller zur Verfügung gestellt wird, ist es bevorzugt, den Wert der elektrischen Kenngröße der Glühkerze in dem Glühkerzensteuergerät zu speichern und für mehrere Aufheizvorgänge zu verwenden. Auch wenn nämlich die Kenngröße für jeden Aufheizvorgang erneut gemessen wird, besteht die Möglichkeit, dass durch einen ungewöhnlichen Betriebszustand des Fahrzeugs, beispielsweise ein kurz zuvor erfolgter Motorbetrieb, ein fehlerhafter Wert der elektrischen Kenngröße ermittelt wird. Indem man den Wert der elektrischen Kenngröße in dem Speicher des Glühkerzensteuergeräts nur dann ändert, wenn mehrere Messungen hintereinander übereinstimmende Ergebnisse liefern, kann die Gefahr einer fehlerhaften Anpassung des Glühprogramms reduziert werden.Regardless of whether the value of the electrical characteristic is determined by the glow plug control device by a measurement or provided by the manufacturer, it is preferable to store the value of the electrical characteristic of the glow plug in the glow plug control device and to use for several heating operations. Even if the parameter is measured again for each heating process, it is possible that an erroneous value of the electrical parameter is determined by an unusual operating state of the vehicle, for example, a recent engine operation. By only changing the value of the electrical characteristic in the glow plug controller memory when multiple measurements provide consecutive results, the risk of erroneous adjustment of the annealing program can be reduced.
Ein Glühkerzensteuergerät zum Durchführen eines erfindungsgemäßen Verfahrens hat einen Schalter, um durch Pulsweitenmodulation einer Bordnetzspannung eines Kraftfahrzeugs eine Effektivspannung zum Anlegen an eine Glühkerze zu erzeugen, einen Speicher, in dem Glühprogramme für unterschiedliche Bauserie von Glühkerzen gespeichert sind, eine Steuereinheit, die im Betrieb den Schalter nach einem der gespeicherten Glühprogramme betätigt, und einem Sensor zum Messen einer Kenngröße einer Glühkerze.A glow plug control device for carrying out a method according to the invention has a switch for generating an effective voltage for application to a glow plug by pulse width modulation of a vehicle electrical system voltage of a motor vehicle, a memory in which glow programs for different series of glow plugs are stored, a control unit which in operation controls the switch operated according to one of the stored Glühprogramme, and a sensor for measuring a characteristic of a glow plug.
In der Regel ist für jede zu steuernde Glühkerze wenigstens ein Schalter vorgesehen, beispielsweise ein Leistungshalbleiter. Das Glühkerzensteuergerät entspricht hinsichtlich seiner Hardwarekomponenten weitgehend handelsüblichen Glühkerzensteuergeräten, so dass sich eine diesbezügliche Beschreibung erübrigt. Das Glühkerzensteuergerät ist derart eingerichtet, dass im Betrieb eine fertigungsbedingte Abweichung eines Werts einer Kenngröße der Glühkerze von einem für die Bauserie typischen Nennwert bestimmt wird und das für Glühkerzen dieser Bauserie vorgesehene Glühprogramm als Funktion der Abweichung angepasst wird.As a rule, at least one switch is provided for each glow plug to be controlled, for example a power semiconductor. With regard to its hardware components, the glow plug control device largely corresponds to commercially available glow plug control devices, so that a description in this regard is unnecessary. The glow plug control device is set up in such a way that, during operation, a production-related deviation of a value of a characteristic of the glow plug from a nominal value typical for the construction series is determined, and the glow program provided for glow plugs of this series of construction is adjusted as a function of the deviation.
Claims (10)
wobei das Glühprogramm in einem Steuergerät gespeichert ist und für die Glühkerze und andere Glühkerzen derselben Bauserie, deren Kenngrößen im Rahmen von Fertigungstoleranzen übereinstimmen, vorgesehen ist, dadurch gekennzeichnet, dass
eine Abweichung eines Werts einer Kenngröße der Glühkerze von einem für die Bauserie typischen Nennwert bestimmt wird, und
das Glühprogramm als Funktion der Abweichung angepasst wird.Method for heating a glow plug to a target temperature by means of an annealing program, which predetermines the time course of an effective voltage generated by pulse width modulation, which is applied to the glow plug for heating,
wherein the annealing program is stored in a control unit and is provided for the glow plug and other glow plugs of the same series of construction, the characteristics of which match within manufacturing tolerances, characterized in that
a deviation of a value of a characteristic of the glow plug from a nominal value typical for the series of construction is determined, and
the annealing program is adjusted as a function of the deviation.
einem Schalter, um durch Pulsweitenmodulation einer Bordnetzspannung eines Kraftfahrzeugs eine Effektivspannung zum Anlegen an eine Glühkerze zu erzeugen,
einem Speicher, in dem Glühprogramme für unterschiedliche Bauserie von Glühkerzen gespeichert sind,
einer Steuereinheit, die im Betrieb den Schalter nach einem der gespeicherten Glühprogramme betätigt, und
einem Sensor zum Messen einer Kenngröße einer Glühkerze, wobei das Glühkerzensteuergerät derart eingerichtet ist, dass im Betrieb eine fertigungsbedingte Abweichung eines Werts einer Kenngröße der Glühkerze von einem für die Bauserie typischen Nennwert bestimmt wird und das für Glühkerzen dieser Bauserie vorgesehene Glühprogramm als Funktion der Abweichung angepasst wird.Glow plug control device for carrying out a method according to any one of the preceding claims, with
a switch in order to generate an effective voltage for application to a glow plug by pulse width modulation of a vehicle electrical system voltage of a motor vehicle,
a memory storing glow programs for different series of glow plugs,
a control unit which in operation operates the switch according to one of the stored annealing programs, and
a sensor for measuring a characteristic of a glow plug, wherein the glow plug control device is set up such that in operation a production-related deviation of a value of a characteristic of the glow plug is determined by a nominal value for the series and adapted for glow plugs of this series of intended annealing program as a function of deviation becomes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009056261A DE102009056261B4 (en) | 2009-11-28 | 2009-11-28 | Method for heating a glow plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2327872A2 true EP2327872A2 (en) | 2011-06-01 |
| EP2327872A3 EP2327872A3 (en) | 2012-07-18 |
Family
ID=43629631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10013652A Withdrawn EP2327872A3 (en) | 2009-11-28 | 2010-10-14 | Method for heating a glow plug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20110130946A1 (en) |
| EP (1) | EP2327872A3 (en) |
| JP (1) | JP2011112046A (en) |
| KR (1) | KR101705104B1 (en) |
| DE (1) | DE102009056261B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014005803A1 (en) * | 2012-07-04 | 2014-01-09 | Robert Bosch Gmbh | Method and device for determining a temperature/resistance correlation of a pencil-type glow plug |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5293775B2 (en) * | 2011-06-29 | 2013-09-18 | 株式会社デンソー | Engine control system, fuel injection device, and injection drive device |
| DE102011086445A1 (en) * | 2011-11-16 | 2013-05-16 | Robert Bosch Gmbh | Method and device for regulating the temperature of a glow plug in an internal combustion engine |
| DE102013201048B4 (en) * | 2013-01-23 | 2015-08-13 | Robert Bosch Gmbh | glow plug |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS578360A (en) * | 1980-06-19 | 1982-01-16 | Diesel Kiki Co Ltd | Glow plug preheating controller |
| US6148258A (en) * | 1991-10-31 | 2000-11-14 | Nartron Corporation | Electrical starting system for diesel engines |
| DE102006010194B4 (en) * | 2005-09-09 | 2011-06-09 | Beru Ag | Method and device for operating the glow plugs of a self-igniting internal combustion engine |
| CN101268274B (en) * | 2005-09-21 | 2010-12-01 | 贝鲁股份公司 | Method for operating a set of glow plugs in a diesel engine |
| DE102006010083B4 (en) * | 2005-09-21 | 2008-09-18 | Beru Ag | Method for driving a group of glow plugs in a diesel engine |
| DE102006060632A1 (en) * | 2006-12-21 | 2008-06-26 | Robert Bosch Gmbh | Method for regulating the temperature of a glow plug of an internal combustion engine |
| FR2910564B1 (en) * | 2006-12-22 | 2013-05-10 | Renault Sas | METHOD FOR CONTROLLING THE ELECTRIC POWER SUPPLY OF A PRE-HEATING CUP FOR AN INTERNAL COMBUSTION ENGINE |
| DE102006062309A1 (en) * | 2006-12-27 | 2008-07-03 | Robert Bosch Gmbh | Pencil-type glow plug for arrangement in chamber of e.g. air compression internal combustion engine, has radio frequency identification-chip fixed to housing, where information is provided in which parameter is coded and stored in chip |
| DE102008007398A1 (en) * | 2008-02-04 | 2009-08-06 | Robert Bosch Gmbh | Method and device for detecting the change of glow plugs in an internal combustion engine |
| JP5113611B2 (en) * | 2008-04-25 | 2013-01-09 | 富士重工業株式会社 | Control device after starting diesel engine |
| JP4972035B2 (en) * | 2008-05-30 | 2012-07-11 | 日本特殊陶業株式会社 | Glow plug energization control device and glow plug energization control system |
| DE102008040971B4 (en) * | 2008-08-04 | 2012-12-27 | Robert Bosch Gmbh | Method and device for regulating the temperature of glow plugs in an internal combustion engine |
-
2009
- 2009-11-28 DE DE102009056261A patent/DE102009056261B4/en not_active Expired - Fee Related
-
2010
- 2010-10-14 EP EP10013652A patent/EP2327872A3/en not_active Withdrawn
- 2010-10-19 JP JP2010234502A patent/JP2011112046A/en active Pending
- 2010-11-08 US US12/941,906 patent/US20110130946A1/en not_active Abandoned
- 2010-11-25 KR KR1020100117819A patent/KR101705104B1/en active Active
Non-Patent Citations (1)
| Title |
|---|
| None |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014005803A1 (en) * | 2012-07-04 | 2014-01-09 | Robert Bosch Gmbh | Method and device for determining a temperature/resistance correlation of a pencil-type glow plug |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110130946A1 (en) | 2011-06-02 |
| EP2327872A3 (en) | 2012-07-18 |
| KR20110059685A (en) | 2011-06-03 |
| DE102009056261B4 (en) | 2012-04-26 |
| KR101705104B1 (en) | 2017-02-09 |
| DE102009056261A1 (en) | 2011-06-09 |
| JP2011112046A (en) | 2011-06-09 |
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