WO2011107345A1 - Procédé et dispositif pour commander ou régler une température d'une bougie-crayon de préchauffage sur un moteur à combustion d'un véhicule automobile - Google Patents

Procédé et dispositif pour commander ou régler une température d'une bougie-crayon de préchauffage sur un moteur à combustion d'un véhicule automobile Download PDF

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Publication number
WO2011107345A1
WO2011107345A1 PCT/EP2011/052251 EP2011052251W WO2011107345A1 WO 2011107345 A1 WO2011107345 A1 WO 2011107345A1 EP 2011052251 W EP2011052251 W EP 2011052251W WO 2011107345 A1 WO2011107345 A1 WO 2011107345A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
glow plug
combustion engine
internal combustion
controlling
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.)
Ceased
Application number
PCT/EP2011/052251
Other languages
German (de)
English (en)
Inventor
Sani Dzeko
Peter Kappelmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP11705191A priority Critical patent/EP2542775A1/fr
Publication of WO2011107345A1 publication Critical patent/WO2011107345A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F02P19/025—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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
    • 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
    • F02D41/0002—Controlling intake air
    • F02D2041/0015—Controlling intake air for engines with means for controlling swirl or tumble flow, e.g. by using swirl valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/021—Engine temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure
    • 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
    • F02P19/026—Glow plug actuation during engine operation

Definitions

  • the invention relates to a method for controlling or regulating a temperature of a glow plug in an internal combustion engine of a motor vehicle, wherein by means of a voltage applied to the glow plug driving voltage, the glow plug is kept approximately constant at a predetermined temperature and an apparatus for performing the method.
  • Glow plugs which are used in internal combustion engines, especially diesel engines, for igniting a fuel-air mixture and maintaining a comfortable starting behavior are preheated in the cold state before their temperature is so high that it is necessary for the ignition of the fuel-air mixture sufficient.
  • the glow plug has a heating element consisting of ceramic or metal, which is subjected to an excessive heating voltage in a short time span of 1 to 2 seconds, so that the glow plug is operated above a nominal voltage at this time.
  • the tip of the glow plug After completion of this so-called push phase, the tip of the glow plug has reached a temperature of about 1000 ° C, which, in order to realize a reliable combustion of the fuel in the starting phase of the internal combustion engine, must be maintained for almost another 20 minutes at a temperature once reached ,
  • the invention is therefore based on the object to provide a method and a device which corrects the cooling behavior of the glow plug in a wide operating range.
  • the object is achieved in that the control or regulation of the temperature of the glow plug in dependence on a, occurring in the internal combustion engine pressure and / or occurs at or in the internal combustion engine temperature.
  • the control or regulation is independent of the operating mode of the internal combustion engine.
  • the advantage of the invention is that the temperature of the glow plug is corrected independently of whether the engine is in normal operation or a particulate filter regeneration operation in which the full filter is burned out at a certain operating point to maintain operation of the internal combustion engine. In each mode of operation, the correction of the temperature of the glow plug is made in a variance from an idle state internal combustion engine to a full load internal combustion engine using the same operating variables.
  • the temperature of the glow plug is reliably controlled or controlled in a range of 900 ° to 1 100 ° C. In this case, a comfortable combustion is realized in the starting phase of the internal combustion engine and improves the quality of the control or control.
  • the control or regulation of the temperature change corrects a cooling of the glow plug thus due to changing engine and ambient conditions.
  • a very simple correction of the cooling behavior of the glow plug is realized, but also allows a very accurate control of the Glüh.kerzentemperatur, as is used precisely on the parameters in the scheme that affect the temperature behavior of the glow plug in the combustion chamber.
  • the correction of the cooling behavior of the glow plug is made more accurate, since the pressure in the combustion engine changes depending on the respective position of the cylinder of the internal combustion engine. Due to the different pressure also varies the speed at which the fuel to be ignited flows past the glow plug and thereby cools the glow plug.
  • the use of the temperature occurring at or in the internal combustion engine allows an accurate determination of the actual temperature of the glow plug, so that the correction values can be easily derived for the control.
  • the glow plug heater temperature is particularly easily corrected if a suction pipe pressure and / or an effective mean pressure for correcting the temperature of the glow plug are used as pressure. Since the intake manifold pressure is already measured as a parameter for other control processes in the internal combustion engine, this is at any time for processing in the temperature control or
  • Control for the glow plug available.
  • the effective mean pressure represents an average of all occurring in a cylinder pressure ratios over a working cycle. It may alternatively be replaced by the engine power or the injection quantity or the torque.
  • a temperature of the intake pipe and / or a cylinder head temperature for correcting the temperature of the glow plug is used as the temperature occurring in or at the internal combustion engine.
  • the cylinder head temperature is used to correct the temperature at the
  • Glow plug especially important because the glow plug on the cylinder head attached and this is the part of the internal combustion engine, which is the hottest in the burns. With the processing of the cylinder head temperature therefore a very accurate temperature control or control of the glow plug is adjustable.
  • a timing of injection of the fuel is taken into account for controlling or controlling the temperature of the glow plug.
  • the timing of the injection is of particular importance because with the injection, the heat development in the cylinders of the internal combustion engine changes, which in particular depends on whether much or little fuel is burned. As a result of the ambient temperature around the glow plug that forms, there is a direct relationship to its cooling behavior, which is why this injection time in the correction of the glow plug temperature contributes to improving the quality.
  • a mass of fresh air present for combustion is taken into account for controlling or regulating the temperature of the glow plug. Since the amount of fresh air supplied into the combustion chamber of the internal combustion engine depends on how the combustion proceeds and which temperatures and turbulences develop, the glow plug protruding into the combustion chamber is also influenced by the fresh air mass in its cooling behavior. The consideration of the fresh air mass in the regulation of the temperature of the glow plug thus improves the correction behavior.
  • the position of a swirl flap is taken into account for correcting the temperature of the glow plug.
  • the swirl flap By means of the swirl flap, the combustion air is forced to move, whereby the air supply to the fuel is improved.
  • turbulences are caused in the combustion chamber, which have an influence on the combustion process, resulting in different heat developments.
  • Such different heat developments have an effect on the cooling behavior of the glow plug.
  • the engine and environmental variables used to correct the temperature of the glow plug are prioritized. Such prioritization causes the individual engine and environmental quantities used for the correction to have a different influence on the glow plug heater temperature to be set, thereby improving the accuracy of the control.
  • the pressure ratios and engine speed are grouped into a first class having a top priority, engine temperature conditions, fuel injection timing, and fresh air mass in a second medium priority class and the position of the swirl door summarized in a class with a low priority.
  • a development of the invention relates to a device for controlling or regulating the temperature of a glow plug in an internal combustion engine of a motor vehicle, wherein the glow plug is kept approximately constant at a predetermined temperature by means of a voltage applied to the glow plug drive voltage.
  • the control or regulation of the temperature of the glow plug takes place as a function of a pressure occurring in the internal combustion engine and / or a temperature occurring at or in the internal combustion engine.
  • the advantage of the invention is that the correction of the Glühwker- zentemperatur or the cooling behavior of the glow plug is independent of the respective operating mode of the internal combustion engine to make more accurate and easier.
  • the temperature of the high-quality glow plug is corrected from an idling state internal combustion engine to a combustion engine operating under full load.
  • the temperature of the glow plug is reliably controlled in a range of 900 ° to 1 100 ° C. In this case, a comfortable combustion is realized in the starting phase of the internal combustion engine.
  • Figure 1 Schematic representation of an annealing system in a motor vehicle
  • glow systems which consist of glow plugs, a Glühzeit Kunststoff réelle and an annealing software, which is stored in an engine control unit or the Glühzeit Kunststoff réelle consist.
  • glow systems are also used to improve the emissions of the vehicle. Further fields of application of the glow system are the burner exhaust system, the auxiliary heating, the preheating of fuel (flex fuel) or the preheating of the cooling water.
  • FIG. 1 shows such an annealing system 1, in which a plurality of glow plugs 2a to 2n are present, each glow plug 2a to 2n in each case a cylinder of a combustion chamber of the diesel engine not shown in detail.
  • the glow plugs 2a to 2n are shown for simplicity as a substitute resistance, which lead to the mass 3 of the diesel engine.
  • the glow plugs 2a to 2n are connected to a Glühzeit Kunststoff Technology 4, which has a power semiconductor 5a to 5n for each glow plug 2a to 2n.
  • the glow time control device 4 comprises a microcontroller 4a and / or an asic for processing incoming and outgoing signals.
  • a vehicle electrical system voltage 6 is connected to the Glühzeit Kunststoff réelle 4, which the glow plugs 2a to 2n on the power semiconductor 5a to 5n, each with a
  • the Glühzeit Kunststoffology 4 leads to an engine control unit 7, which in turn is connected to the diesel engine, not shown.
  • the glow plug 2 a to 2 n preheated by the application of an overvoltage by the Glühzeit Kunststoff réelle 4 in a heating phase, which lasts 1 to 2 seconds.
  • the electric power sequentially supplied to the glow plugs 2a to 2n by the glow timing controller 4 is converted into heat in the heating element of the respective glow plug 2a to 2n, and therefore, the temperature in the heater rises steeply.
  • This electrical energy is from the vehicle electrical system voltage and the formed as a function of the resistance of the glow plug 2a..2n resulting stream.
  • the fuel is conducted past the heating element of the respective glow plug 2 a to 2 n, which consists, for example, of a metal glow tube or a ceramic heater, and heats up in the process. Associated with an intake air heating during the compressor stroke of the diesel engine, the ignition temperature of the fuel-air mixture is achieved.
  • the glow plugs 2a to 2n have different incandescent phases. As already shown, in a heating phase, the push phase, the cold glow plug 2a to 2n a push voltage is supplied, which is above the rated voltage of the glow plug 2a to 2n. During this short period, the glow plug is heated to approximately 1000 ° C. This heating phase is followed by the phase of a stationary temperature of the glow plug 2a to 2n.
  • the glow time control device 4 supplies each glow plug 2 a to 2 n with a voltage which is lower than the vehicle electrical system voltage provided by the battery 6 of the motor vehicle.
  • the power semiconductors 5a to 5n which are connected upstream of the glow plugs 2a to 2n, are controlled by means of the method of pulse width modulation. This method enables the onboard power voltage supplied to the power semiconductors 5a to 5n to be modulated by the glow timing control device 4 to apply a desired voltage to the glow plugs 2a to 2n on the average time, whereby the steady state temperature of the glow plugs 2a to 2n, to 1000 ° C, for example.
  • the specification of the temperature to which the glow plug 2 a to 2 n is to be controlled or controlled takes place here by the engine control unit 7.
  • the engine control unit 7 takes account of various engine operating variables.
  • the engine speed and an effective mean pressure is used, which results as an average of the pressure fluctuations that occur during the movement of the cylinder in the combustion chamber of the engine.
  • the engine power or the injection quantity of fuel or the torque of the internal combustion engine can also be used for the effective pressure mean value. All of these motor operating variables mentioned go into the highest priority Determining the glow plug heater temperature to which the glow plugs are to be regulated.
  • the engine control unit 7 takes into account the intake manifold temperature and the cylinder head temperature.
  • the control start of the main injection of the fuel or, more generally, the start of the actuation of the injections are taken into account as correction variables in this group.
  • the start of activation for the pre-, main and post-injection can be used separately.
  • the fresh air mass is taken into account, which can also be replaced by the EGR mass (exhaust gas recirculation) or the fresh air or EGR rate.
  • This second group of operating variables has a medium priority in determining the glow plug temperature to be set, which is lower than the priority assigned to the first group of operating variables.
  • the position of the swirl flap is also taken into account in the temperature control of the glow plug temperature, but only with the lowest priority, which is why it is also assigned to a third group of operating variables.

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)

Abstract

L'invention concerne un procédé pour commander ou régler une température d'une bougie-crayon de préchauffage dans un moteur à combustion d'un véhicule automobile, dans lequel la bougie-crayon de préchauffage (2a à 2n) est maintenue à une température prédéfinie approximativement constante au moyen d'une tension de commande s'appliquant sur la bougie-crayon de préchauffage (2a à 2n). Afin de pouvoir corriger le comportement au refroidissement de la bougie-crayon de préchauffage dans une large plage de service, la commande ou le réglage de la température de la bougie-crayon de préchauffage (2a bis 2n) s'effectue en fonction d'une pression apparaissant dans le moteur à combustion et/ou d'une température apparaissant sur ou dans le moteur à combustion.
PCT/EP2011/052251 2010-03-03 2011-02-16 Procédé et dispositif pour commander ou régler une température d'une bougie-crayon de préchauffage sur un moteur à combustion d'un véhicule automobile Ceased WO2011107345A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11705191A EP2542775A1 (fr) 2010-03-03 2011-02-16 Procédé et dispositif pour commander ou régler une température d'une bougie-crayon de préchauffage sur un moteur à combustion d'un véhicule automobile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010002529 DE102010002529A1 (de) 2010-03-03 2010-03-03 Verfahren und Vorrichtung zur Steuerung oder Regelung einer Temperatur einer Glühstiftkerze in einem Verbrennungsmotor eines Kraftfahrzeuges
DE102010002529.1 2010-03-03

Publications (1)

Publication Number Publication Date
WO2011107345A1 true WO2011107345A1 (fr) 2011-09-09

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Application Number Title Priority Date Filing Date
PCT/EP2011/052251 Ceased WO2011107345A1 (fr) 2010-03-03 2011-02-16 Procédé et dispositif pour commander ou régler une température d'une bougie-crayon de préchauffage sur un moteur à combustion d'un véhicule automobile

Country Status (3)

Country Link
EP (1) EP2542775A1 (fr)
DE (1) DE102010002529A1 (fr)
WO (1) WO2011107345A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8115144B2 (en) 2008-05-21 2012-02-14 GM Global Technology Operations LLC Method for controlling the operation of a glow-plug in a diesel engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011087989A1 (de) * 2011-12-08 2013-06-13 Robert Bosch Gmbh Verfahren und Vorrichtung zur Ansteuerung einer Glühstiftkerze in einer Brennkraftmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131191A1 (de) * 1981-08-06 1983-02-24 Michael G. Dipl.-Ing. ETH 1180 Rolle May Verfahren zur ladungszuendung einer hubkolbenbrennkraftmaschine und hubkolbenbrennkraftmaschine zur durchfuehrung dieses verfahrens
FR2897656A1 (fr) * 2006-02-23 2007-08-24 Renault Sas Procede et systeme de commande d'une bougie de prechauffage, a alimentation a basse tension electrique, d'un melange air/carburant de moteur diesel
EP2012002A2 (fr) * 2007-07-06 2009-01-07 BERU Aktiengesellschaft SUE Procédé de fonctionnement de bougies de préchauffage dans des moteurs diesel
DE102008007271A1 (de) * 2008-02-04 2009-08-06 Robert Bosch Gmbh Verfahren zur Steuerung von zumindest einer Glühstiftkerze in einem Brennkraftmotor und Motorsteuergerät
DE102008001598A1 (de) * 2008-05-06 2009-11-12 Robert Bosch Gmbh Verfahren und System zum Steuern der Glühtemperatur von Glühstiftkerzen eines Brennkraftmotors
EP2123901A1 (fr) * 2008-05-21 2009-11-25 GM Global Technology Operations, Inc. Procédé de commande du fonctionnement de la bougie de préchauffage dans un moteur diesel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131191A1 (de) * 1981-08-06 1983-02-24 Michael G. Dipl.-Ing. ETH 1180 Rolle May Verfahren zur ladungszuendung einer hubkolbenbrennkraftmaschine und hubkolbenbrennkraftmaschine zur durchfuehrung dieses verfahrens
FR2897656A1 (fr) * 2006-02-23 2007-08-24 Renault Sas Procede et systeme de commande d'une bougie de prechauffage, a alimentation a basse tension electrique, d'un melange air/carburant de moteur diesel
EP2012002A2 (fr) * 2007-07-06 2009-01-07 BERU Aktiengesellschaft SUE Procédé de fonctionnement de bougies de préchauffage dans des moteurs diesel
DE102008007271A1 (de) * 2008-02-04 2009-08-06 Robert Bosch Gmbh Verfahren zur Steuerung von zumindest einer Glühstiftkerze in einem Brennkraftmotor und Motorsteuergerät
DE102008001598A1 (de) * 2008-05-06 2009-11-12 Robert Bosch Gmbh Verfahren und System zum Steuern der Glühtemperatur von Glühstiftkerzen eines Brennkraftmotors
EP2123901A1 (fr) * 2008-05-21 2009-11-25 GM Global Technology Operations, Inc. Procédé de commande du fonctionnement de la bougie de préchauffage dans un moteur diesel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8115144B2 (en) 2008-05-21 2012-02-14 GM Global Technology Operations LLC Method for controlling the operation of a glow-plug in a diesel engine

Also Published As

Publication number Publication date
EP2542775A1 (fr) 2013-01-09
DE102010002529A1 (de) 2011-09-08

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