WO2008043347A1 - Réglage d'une puissance de chauffage d'un appareil de chauffage - Google Patents

Réglage d'une puissance de chauffage d'un appareil de chauffage Download PDF

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Publication number
WO2008043347A1
WO2008043347A1 PCT/DE2007/001798 DE2007001798W WO2008043347A1 WO 2008043347 A1 WO2008043347 A1 WO 2008043347A1 DE 2007001798 W DE2007001798 W DE 2007001798W WO 2008043347 A1 WO2008043347 A1 WO 2008043347A1
Authority
WO
WIPO (PCT)
Prior art keywords
heater
exhaust gas
gas temperature
heating power
combustion chamber
Prior art date
Application number
PCT/DE2007/001798
Other languages
German (de)
English (en)
Inventor
Andreas Rutsche
Elisabeth Dronia
Stefan Baldauf
Original Assignee
Webasto Ag
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 Webasto Ag filed Critical Webasto Ag
Publication of WO2008043347A1 publication Critical patent/WO2008043347A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
    • B60H1/2206—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners controlling the operation of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2246—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant obtaining information from a variable, e.g. by means of a sensor
    • B60H2001/2256—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant obtaining information from a variable, e.g. by means of a sensor related to the operation of the heater itself, e.g. flame detection or overheating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2259—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant output of a control signal
    • B60H2001/2265—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant output of a control signal related to the quantity of heat produced by the heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/10—Measuring temperature stack temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/14—Vehicle heating, the heat being derived otherwise than from the propulsion plant

Definitions

  • the invention relates to a method for controlling / regulating a heating power of a heater, in particular a fuel-operated air or water heater for motor vehicles.
  • the invention relates to a heater, in particular a fuel-operated air or water heater for motor vehicles, with a combustion chamber, wherein formed in the combustion chamber exhaust gas is discharged.
  • Such a method for carrying out such a known heater is known for example from DE 103 38 226 Al.
  • a temperature of a heat transfer medium is determined, in particular during a start phase or a transient operation of the heater, which flows through a heat exchanger and absorbs heat arising in the combustion chamber via the heat exchanger.
  • a fuel-combustion air ratio in the combustion chamber is then controlled.
  • the control of the fuel-combustion air ratio serves to avoid the discharge or the exhaust of the exhaust gas from the combustion chamber with an excessive content of CO, CO 2 and soot.
  • the control of DE 103 38 226 A1 is based on the finding that an increasing heat transfer medium temperature during the starting phase of the heater is due to an increase in the exhaust gas temperature. Therefore, in the presence of the increased heat transfer medium temperature, the assumption is made that there is a rich fuel-combustion air ratio in the combustion chamber, which in turn leads to increased pollutant emissions. push leads. Accordingly, a combustion air flow supplied to the combustion chamber is raised and, in the event that this increase is insufficient, a fuel delivery into the combustion chamber is reduced to prevent the presence of a rich fuel-combustion air ratio.
  • the heat transfer medium is water and continue to relate both by coupling with a water cooling circuit of the motor vehicle heat from the heat exchanger and waste heat of the motor vehicle, depending on the type of motor vehicle or the type of motor strong fluctuations in the heat transfer medium temperature may occur. This often leads to strong deviations between the heat transfer medium temperature and the actual exhaust gas temperature. Therefore, the control of the heating power based on the heat transfer medium temperature is not optimal in all cases, especially in the starting phase of the heater.
  • the invention is therefore based on the object of developing the generic methods and heaters such that a more precise control / regulation of the heating power is possible.
  • the inventive method is based on the genus
  • the heating power is controlled / regulated based on a direct detection of an exhaust gas temperature of the heater.
  • Fuel-operated heaters fuel-operated auxiliary heaters, such as a heater, etc., into consideration.
  • the risk of falsified control is bypassed, especially if there are different temperatures between the exhaust gas and the heat transfer medium of the heater.
  • critical operating conditions in particular critical combustion states in a combustion chamber of the heater, can be detected and proper control / regulation can be carried out. As a result, the critical operating conditions of the heater are avoided, whereby a long service life of the heater can be achieved.
  • the method according to the invention can advantageously be further developed in that the heating power of the heater is controlled / regulated in the stationary operation of the heater.
  • the control / regulation of the heating power by the direct determination of the exhaust gas temperature is advantageous because it can be concluded by the behavior of the exhaust gas temperature critical operating conditions of the heater.
  • the method according to the invention can be carried out in such a way that the heating power of the heater is reduced if the exhaust gas temperature has a maximum operating temperature. gas temperature exceeds. For example, if the maximum heating power of the heater is lowered, maximum values, such as the maximum operating exhaust temperature, should be exceeded during operation. As a result, the exhaust gas temperature returns to the specific or intended for the operation area.
  • soot for example a heat exchanger
  • soot can be closed, which can lead to efficiency losses of the heater.
  • the exhaust gas temperature is lowered by controlling the heating power. Thus, excessive soot formation can be largely avoided, whereby no permanent locking or shutdown of the heater is required.
  • the method according to the invention is realized in such a way that a regeneration operation of the heater is determined on the basis of the exhaust gas temperature. Based on the increase in the exhaust gas temperature can be concluded that a regeneration operation. This does not necessarily have to be caused by control, but can also occur by the operation of the heater under certain operating conditions of itself, so almost automatically. For example, such a regeneration operation of the heater can be concluded by an increase in the exhaust gas temperature with a subsequent drop in the exhaust gas temperature. Due to the course of the determined exhaust gas temperature, therefore, a direct or immediate adjustment of the heating power can be undertaken. For example, such regeneration operations for soot and coke burnup may be caused by sudden load changes or airflow fluctuations.
  • a combustion air supply into a combustion chamber of the heater is increased upon determination of the regeneration operation of the heater or a targeted initiation of the regeneration operation of the heater based on the exhaust gas temperature.
  • the combustion air supply can be increased to cause a lean operation (excess air in the combustion chamber) and thus deposited in the heat exchanger or heat exchanger soot from the heater blow out or reduce. This increase in the combustion air supply to reduce the heating power is thus actively accomplished in the detection of the regeneration operation.
  • the inventive method can be realized such that the heating power of the heater by adjusting a combustion air supply and / or a
  • Fuel supply is controlled in a combustion chamber of the heater / regulated.
  • the heating power can be controlled / controlled accordingly.
  • the heater according to the invention builds on the generic state of the art in that an exhaust gas temperature sensor is provided for direct detection of the temperature of the discharged exhaust gas.
  • an exhaust gas temperature sensor is provided for direct detection of the temperature of the discharged exhaust gas.
  • the heater according to the invention can be developed in an advantageous manner such that further a control device is provided which is suitable, a heating power of
  • the heating device according to the invention can be realized in such a way that the control device is suitable for controlling / regulating the heating power of the heating device in stationary operation of the heating device.
  • the heater according to the invention can be implemented so that the controller is adapted to reduce the heating power of the heater when the exhaust gas temperature exceeds a maximum Melabgastemperaturwert.
  • the heater according to the invention can be realized so that the controller is adapted to determine a regeneration operation of the heater based on the exhaust gas temperature.
  • the heater according to the invention may be configured such that the control unit is adapted to increase a combustion air supply into a combustion chamber of the heater when determining the regeneration operation of the heater by the exhaust gas temperature. Furthermore, the heater according to the invention may be developed so that the control unit is suitable, the heating power of the heater by. Adjusting a Brennluftzu- drive and / or a fuel supply in a combustion chamber of the heater to control / regulate.
  • FIG. 1 is a highly schematic representation of the heater according to the invention, which is suitable for carrying out the method according to the invention.
  • FIG. 1 shows a highly schematic representation of the heater 10 according to the invention, which is suitable for carrying out the method according to the invention.
  • the heater 10 comprises a blower device 22, which draws in combustion air 20 at a suction side and supplies the same at an outlet side of a combustion chamber 12.
  • the combustion chamber 12 is further supplied from a BrennstoffZu colinraum 30, such as a Brennstoffdosierpumpe, fuel 32.
  • a heat exchanger 26 is provided on the combustion chamber 12, which at least partially transmits a waste heat generated by an at least partial or complete combustion of a combustion air-fuel mixture to a heat transfer medium.
  • an input-side heat transfer medium flow 24 is supplied to the heat exchanger 26 on the input side, which is heatable in the heat exchanger 26, and then as a heated output-side heat transfer medium. germediumstrom 28 is discharged.
  • the combustion chamber 12 furthermore carries off exhaust gas 14 produced by the combustion, wherein an exhaust gas temperature sensor 16 is provided by means of which the exhaust gas temperature can be sensed.
  • a control device 18 is furthermore provided which is connected to the exhaust gas temperature sensor 16 and obtains exhaust gas temperature values from it.
  • the controller 18 is coupled to the blower 22 to adjust the combustion air supply to the combustion chamber 12, and further coupled to the fuel supply 30 to adjust the fuel supply to the combustion chamber 12.
  • the control unit 18 is a control or regulating device known to the person skilled in the art and comprises customary components such as an ECU, a memory, etc.
  • the inventive method for controlling / regulating a heating power of the heater 10 is performed by the controller 18.
  • the combustor 12 is supplied with combustion air 20 and fuel 32 for forming a combustion air-fuel mixture.
  • this mixture is subsequently ignited, for example by an ignition device, not shown, which is also of no interest, such as a ceramic glow plug, whereby combustion in the combustion chamber 12 takes place.
  • combustion heat generated is at least partially transmitted via the heat exchanger 26 to the heat transfer medium flow 28.
  • Exhaust gas 14 produced by the combustion leaves the combustion chamber 12, the exhaust gas temperature of which is detected by the exhaust gas temperature sensor 16. If the exhaust gas temperature exceeds a predetermined maximum operating temperature value, the heating power is reduced. This is done on the one hand by increasing the combustion air supply.
  • this can additionally by a Reduction of fuel supply can be accomplished.
  • a lean combustion air-fuel mixture is achieved in the combustion chamber, whereby the exhaust gas temperature and the heating power can be reduced.
  • the course of the exhaust gas temperature is constantly monitored. This monitoring is used inter alia to determine whether a regeneration operation of the heater 10 is present. If an exhaust gas temperature rise occurs, followed by a drop in the exhaust gas temperature, then a regeneration operation is concluded whereby the supply of combustion air is increased so that the soot is increasingly blown out. Likewise, a heating power adjustment takes place due to the temperature drop.
  • Blower 24 input side heat transfer medium flow

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un procédé destiné à commander/régler une puissance de chauffage d'un appareil de chauffage (10), en particulier d'un appareil de chauffage d'air ou d'eau à combustible (10) pour véhicules. L'invention prévoit que la puissance de chauffage soit commandée/réglée en se basant sur une détection directe d'une température des gaz d'échappement d'un appareil de chauffage (10). De plus, l'invention concerne un appareil de chauffage (10), en particulier un appareil de chauffage d'air ou d'eau à combustible pour véhicules, comprenant une chambre de combustion (12), les gaz d'échappement (14) obtenus dans la chambre de combustion (12) étant évacués. L'invention prévoit un capteur de température des gaz d'échappement (16) pour la détection directe de la température des gaz d'échappement (14) évacués.
PCT/DE2007/001798 2006-10-10 2007-10-09 Réglage d'une puissance de chauffage d'un appareil de chauffage WO2008043347A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006047990.4 2006-10-10
DE102006047990A DE102006047990B4 (de) 2006-10-10 2006-10-10 Regelung einer Heizleistung eines Heizgeräts

Publications (1)

Publication Number Publication Date
WO2008043347A1 true WO2008043347A1 (fr) 2008-04-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2007/001798 WO2008043347A1 (fr) 2006-10-10 2007-10-09 Réglage d'une puissance de chauffage d'un appareil de chauffage

Country Status (2)

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DE (1) DE102006047990B4 (fr)
WO (1) WO2008043347A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11148504B2 (en) 2016-11-29 2021-10-19 Webasto SE Fuel-operated vehicle heating device and method to operating a fuel-operated vehicle heating device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT108703B (pt) * 2015-07-17 2021-03-15 Bosch Termotecnologia, S.A. Dispositivo para aparelhos de aquecimento e processo para a operação de um dispositivo para aparelhos de aquecimento

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9421866U1 (de) * 1994-12-30 1996-11-28 Fa. J. Eberspächer, 73730 Esslingen Fahrzeugheizgerät
EP0827854A2 (fr) * 1996-09-07 1998-03-11 WEBASTO THERMOSYSTEME GmbH Procédé et dispositif pour faire fonctionner un appareil de chauffage pour véhicule, indépendant du moteur
US5788148A (en) * 1993-12-31 1998-08-04 J. Eberspacher Gmbh & Co. Vehicle heating appliance with overheating checking device
US5893710A (en) * 1995-12-22 1999-04-13 J. Eberspacher Gmbh & Co. Fuel-operated heater, especially an auxiliary heater for a motor vehicle
US6006997A (en) * 1995-07-04 1999-12-28 J. Eberspacher Gmbh & Co. Heating appliance, in particular for heating a motor vehicle passenger compartment
DE10338226A1 (de) 2003-08-20 2005-03-10 Webasto Ag Fahrzeugtechnik Verfahren zum Steuern eines Heizgerätes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735079C2 (de) * 1997-04-30 2001-11-22 Eberspaecher J Gmbh & Co Brennstoffbetriebenes Heizgerät, insbesondere motorunabhängig betriebenes Luftheizgerät für Kraftfahrzeuge
DE10144406C1 (de) * 2001-09-10 2003-05-22 Webasto Thermosysteme Gmbh Heizgerät, insbesondere Zusatzheizgerät für mobile Anwendungen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5788148A (en) * 1993-12-31 1998-08-04 J. Eberspacher Gmbh & Co. Vehicle heating appliance with overheating checking device
DE9421866U1 (de) * 1994-12-30 1996-11-28 Fa. J. Eberspächer, 73730 Esslingen Fahrzeugheizgerät
US6006997A (en) * 1995-07-04 1999-12-28 J. Eberspacher Gmbh & Co. Heating appliance, in particular for heating a motor vehicle passenger compartment
US5893710A (en) * 1995-12-22 1999-04-13 J. Eberspacher Gmbh & Co. Fuel-operated heater, especially an auxiliary heater for a motor vehicle
EP0827854A2 (fr) * 1996-09-07 1998-03-11 WEBASTO THERMOSYSTEME GmbH Procédé et dispositif pour faire fonctionner un appareil de chauffage pour véhicule, indépendant du moteur
DE10338226A1 (de) 2003-08-20 2005-03-10 Webasto Ag Fahrzeugtechnik Verfahren zum Steuern eines Heizgerätes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11148504B2 (en) 2016-11-29 2021-10-19 Webasto SE Fuel-operated vehicle heating device and method to operating a fuel-operated vehicle heating device

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Publication number Publication date
DE102006047990A1 (de) 2008-04-17
DE102006047990B4 (de) 2008-12-18

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