WO2008052498A1 - Procédé de régénération d'un reformeur - Google Patents

Procédé de régénération d'un reformeur Download PDF

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Publication number
WO2008052498A1
WO2008052498A1 PCT/DE2007/001674 DE2007001674W WO2008052498A1 WO 2008052498 A1 WO2008052498 A1 WO 2008052498A1 DE 2007001674 W DE2007001674 W DE 2007001674W WO 2008052498 A1 WO2008052498 A1 WO 2008052498A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
reformer
drive unit
motor vehicle
fuel cell
Prior art date
Application number
PCT/DE2007/001674
Other languages
German (de)
English (en)
Inventor
Manfred Pfalzgraf
Markus Bedenbecker
Matthias Boltze
Andreas Engl
Original Assignee
Enerday 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 Enerday Gmbh filed Critical Enerday Gmbh
Publication of WO2008052498A1 publication Critical patent/WO2008052498A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • 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
    • B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
    • B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/00764—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed
    • B60H1/00778—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being a vehicle driving condition, e.g. speed the input being a stationary vehicle position, e.g. parking or stopping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • H01M8/0618—Reforming processes, e.g. autothermal, partial oxidation or steam reforming
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/06—Integration with other chemical processes
    • C01B2203/066—Integration with other chemical processes with fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the invention relates to a method for regenerating a reformer, which is associated with a fuel cell system, wherein the fuel cell system is a component of an air conditioner of a motor vehicle drivable by a drive unit and the air conditioning system supplied with electrical energy.
  • the invention further relates to an air conditioning system for stationary air conditioning of a motor vehicle drivable by a drive unit, comprising a fuel cell system having a reformer for operating a refrigeration circuit and a control device for controlling the fuel cell system.
  • Other concepts provide for the regeneration in the continuous operation of the reformer, namely, for example, by repeatedly reducing the fuel feed rate during several successive time intervals. Between the time intervals, the system then regulates again to the air ratio which is typical for the reforming, so that overall the supply of the fuel cell stack with reformate does not break off. Furthermore, it can be provided to supply a regeneration by feeding a NO 2 -containing gas mixture into the reformer, namely during continuous continuous generation of reformat.
  • the reform process will be influenced, either by a total failure of the reform process or by a reduction in the rate of reform of the reform process. This may ultimately affect other components and processes associated with the fuel cell system, which should be avoided if possible.
  • the invention has for its object to provide a method for regenerating a reformer and an air conditioning system for a motor vehicle available, so that a Fluxing the mode of operation of the air conditioning is excluded.
  • the invention is based on the generic method in that an operation of the drive unit of the motor vehicle is a condition for regenerating the reformer. While the drive unit of the motor vehicle is operated, a reforming operation is not required, because the operation of the air conditioning system powered by the fuel cell system can then be dispensed with. Cooling of the vehicle interior can be effected by the operation of a conventional air conditioner driven by the drive unit or by other measures, for example ventilation of the interior. Thus, by putting the regeneration phases of the reformer into the periods when the air conditioning is not needed, an undesirable influence on their operation is avoided.
  • the operation of the drive unit of the motor vehicle is a necessary condition for regenerating the reformer.
  • the regeneration of the reformer thus takes place only when the drive unit is in operation.
  • it can be checked whether further conditions for a regeneration are fulfilled.
  • the operation of the drive unit of the motor vehicle sufficient condition for Regenerating the reformer is.
  • a regeneration of the reformer always takes place when the drive unit of the motor vehicle is put into operation. Further prerequisites for regeneration do not have to be present.
  • an indicator be provided when an operating phase of the power plant is likely to last longer than the minimum time required to regenerate the reformer and that the presence of the indicator is an additional condition for regenerating the reformer.
  • the indicator may be provided as the vehicle is moving at higher speeds, as it is likely that the operating phase of the power plant will continue to last even longer.
  • a control device detects and stores operating patterns of the motor vehicle and that the indicator is made available when an operating pattern is anticipated in which an operating period of the drive unit is expected to last longer than the minimum time required to regenerate the reformer.
  • a control unit which can be assigned to the air conditioning system or another control unit of the motor vehicle, detects the operating behavior of the vehicle and "learns" typical operating patterns. If a vehicle, for example, every day ⁇
  • the controller is this information due to the learning phase available. If, after learning that has already taken place, the vehicle is thus put into operation in the described manner at the specific time of day, this is a sufficient criterion for providing an indicator.
  • the indicator is made available by operating a control element.
  • the regeneration of the reformer can thus be actively set in motion by the driver of the vehicle, but only when the drive unit is in operation.
  • the invention is based on the generic air conditioning in that the control unit is adapted to control a method according to the invention.
  • the advantages and special features of the method according to the invention are implemented in the context of an air conditioner.
  • FIG. 1 is a schematic representation of an air conditioner according to the invention
  • FIG. 2 is a schematic representation of the motor vehicle with the air conditioner according to the invention.
  • FIG. 3 is a flow chart of an air conditioning operation
  • FIG. 4 shows a flow chart for explaining a method according to the invention for regenerating a reformer.
  • FIG. 1 shows a schematic representation of an air conditioner according to the invention.
  • the installed in a motor vehicle 10 air conditioning 12 (installation position, see FIG. 2), which is outlined in Figure 1 with a dashed line, comprises as main elements a fuel cell system 14 and a refrigerant circuit sixteenth
  • the fuel cell system 14 comprises a reformer 18, to which fuel can be supplied via a fuel train 20 from a fuel tank (not shown). Further, the reformer 18 at a second Brennstoffzu 1500 formulation by means of a fuel strand 22 also from the fuel tank fuel can be supplied. Suitable fuel types are diesel, gasoline, natural gas and other types of fuel known from the prior art. Furthermore, that is
  • Reformer 18 via an oxidant strand 24 Oxidati- onsstoff, ie in particular air, can be fed.
  • the reformate produced by the reformer 18 can be fed to a fuel cell stack 26.
  • the reformate is a hydrogen-containing gas which is reacted in the fuel cell stack 26 with the aid of cathode feed through a cathode feed line 28 to generate electrical energy and heat.
  • the generated electrical energy can be fed via an electrical line 30 to an electric motor 32, a battery 34 and an electric heater 36 of the air conditioning system 12.
  • the anode exhaust gas is passed through an anode exhaust line 38 of a mixing unit. unit 40 of an afterburner 42 can be fed.
  • fuel can be fed to the afterburner 42 via a fuel line 44 from the fuel tank and via an oxidant strand 46 to oxidizing agent.
  • suitable, not shown conveyors such as pumps, are arranged.
  • oxidant strands 24 and 46 corresponding, not shown conveyors, in this case, preferably blower arranged. These conveyors can be supplied with power directly from the fuel cell stack 26 or from the battery 34.
  • the combustion exhaust gas which contains virtually no pollutants, flows through a heat exchanger 52 for preheating the cathode air and finally leaves the fuel cell system 14 via an exhaust gas outlet 54.
  • a compressor 56 In the refrigerant circuit 16, a compressor 56, a condenser 58, an expansion element 60 and an evaporator 62 are arranged.
  • the compressor 56 can be driven by the electric motor 32, which in turn is preferably supplied with energy by the fuel cell stack 26 of the fuel cell system 14, but can also be supplied with energy by the battery 34 for a short time.
  • the evaporator 62 is associated with a blower 64. Ambient air can be drawn in from the outside via an outside air line 66.
  • the term "from the outside”, as used in connection with this invention, means from outside the interior space 78, thus designates the motor vehicle 10th - -
  • the outside air duct 66 leads to an adjusting device 68, which can supply the outside air to the blower 64.
  • the air directed from the actuator 68 to the fan 64 flows past the evaporator 62 as airflow 70. In this way, the air flow 70 through the evaporator 62 heat energy can be withdrawn.
  • the cooled air stream can then be fed via an adjusting device 72 and an air guide 74 via a hat rack 76 a vehicle interior 78.
  • the adjusting device 72 can be realized, for example, by a solenoid valve or by check valves, which only permit a flow from the two supply lines to the air guide 74.
  • the cooled air flows through the vehicle interior 78 (as illustrated by arrows in FIG.
  • the air flows via an air guide 82 back to the adjusting device 68, where they completely or partially after. Is discharged outside or back to the fan 64 is passed.
  • a corresponding line is provided, which is not shown for reasons of clarity.
  • the circuit of the adjusting device 68 thus makes it possible to realize either a fresh air or a circulating air concept in which air is drawn in from outside via the outside air line 66 or the air is recirculated from the air duct 82. Mixed forms of these modes are possible.
  • the air introduced via the outside air line 66 can be supplied to an air guide 84 and via this to a fan 86.
  • this air flows as air stream 88 on hot parts of the fuel cell system 14 directly past or by (not shown) heat exchanger, which mediate between the air stream 88 and the hot parts.
  • the hot parts of the fuel cell system 14 are preferably the reformer 18, the fuel cell stack 26 and the afterburner 42.
  • 88 heat energy can be supplied to the air flow 88 by the waste heat of the hot parts of the fuel cell system.
  • the heated air stream 88 leads via an air guide 90 to the electric heater 36, which is supplied directly from an energy generated by the fuel cell stack 26 or stored by the battery 34 e.
  • the already preheated air in the air duct 90 can be further heated and the adjusting device 72 and the
  • Air guide 74 are supplied to the interior 78. After flowing through the interior 78 of the air flow via the air guide 82 to the adjusting device 68, where it is either discharged to the outside or is passed back to the fan 86. In this case as well, it is possible, via the circuit of the adjusting device 68, to realize a recirculation concept optionally in such a heating operation, in which air is drawn in from outside via the outside air line 66 or the air is recirculated out of the air guide 82.
  • Cooling operation with circulating air circulation In this operating state, the adjusting device 68 is switched so that air is guided from the interior 78 via the air guide 82 to the blower 64. This air flow 70 is cooled and guided via the adjusting device 72 and the air guide 74 into the interior 78, as a result of which it is cooled.
  • the adjusting device 68 In this operating state, the adjusting device 68 is switched so that air is guided from the interior 78 via the air guide 82 to the blower 64. This air flow 70 is cooled and guided via the adjusting device 72 and the air guide 74 into the interior 78, as a result of which it is cooled.
  • Cooling operation with external air supply In this operating state, the adjusting device 68 is switched so that outside air is guided via the outside air line 66 to the blower 64. The air flow 70 is cooled and over the
  • Adjustment device 72 and the air guide 74 guided in the interior 78 The over the air guide 82 from the interior 78 leading air flow is discharged from the actuator 68 to the outside.
  • the measures explained in the context of the cooling operation described above are taken.
  • Heating mode with circulating air circulation In this operating state, an air flow 88 is guided from the interior 78 to the fan 86 via the air guide 82, the adjusting device 68 and the air guide 84.
  • the refrigeration circuit 16 is not in operation, d. H. the electric motor 32 is not operated.
  • the blower 86 passes the air stream 88 past the hot parts of the fuel cell system 14.
  • the preheated in this way air is guided by the air guide 90 to the e- lectric heater 36 and on to the adjusting device 72.
  • the electric heater 36 is operated to heat the air in the air duct 90 with electric power. Subsequently, the heated air flows via the adjusting device 72 and the air guide 74 into the interior space 78.
  • Heating mode with outside air supply In this operating state, outside air is supplied via the outside air line 66 from the Adjusting device 68 of the air guide 84 is supplied. The waste heat produced by the operation of the fuel cell system 14 heats the air flow 88. This heated air flow is directed into the interior 78 via the air guide 90, the electric heater 36, the actuator 72, and the air guide 74, as in the above-described operation state. Subsequently, this air flow is guided via the air guide 82 to the adjusting device 68, where it is discharged to the outside.
  • This electronic control unit selects the suitable operating state depending on the temperature in the interior 78, outside temperature, set target temperatures and desired air conditioning operation.
  • Control unit is not shown in the figures for reasons of clarity, but it is immediately apparent to those skilled in the art that these at least with the corresponding conveyors in the strands 20, 22, 24, 44 and 46 of the power distribution in the electrical line 30, the
  • Blowers 64 and 86, the electric heater, the electric motor 32, the actuators 68 and 72 and the corresponding temperature sensors is connected.
  • the above-described flow direction in the vehicle interior 78 ie introducing the air over the parcel shelf 76 and discharging the air below the seat 80 may also be reversed in the cooling and / or heating mode.
  • the air guide would have to open 74 corresponding to the seat 80 in the vehicle interior 78 and open the air guide 82 on the parcel shelf 76 in the vehicle interior 78.
  • FIG. 2 shows a schematic illustration of the motor vehicle 10 with the air conditioning system 12 according to the invention.
  • the air conditioning system 12 according to the invention can be mounted in the compartment, preferably as a retrofittable unit. It is also possible to install the air conditioning in the passenger compartment of the vehicle. Here it can be used, for example, in addition to cooling a refrigerator.
  • the motor vehicle 10 has a conventional air conditioning system
  • a compressor of a conventional refrigerant circuit is mechanically driven by a drive unit 94, preferably an internal combustion engine.
  • the drive unit is associated with a tailpipe 96 in a known manner. While driving the motor vehicle 10 and the associated
  • the interior 78 can be cooled via the conventional, on-board air conditioning 92 in a well-known manner or heated by waste heat of the drive unit 94.
  • the interior space 78 can be conditioned via the air conditioning system 12 according to the invention.
  • an exhaust gas temperature sensor 98 electrically connected to the electronic control unit of the air conditioner 12 is provided, which is mounted on the outside of the exhaust pipe 96, or installed in the exhaust pipe 96.
  • a sensor 100 is provided, which is electrically connected to the electronic control unit of the air conditioner 12.
  • the sensor 100 may be a motion sensor and / or a sound sensor. In the case of a motion sensor this can
  • Detecting an acceleration determine that the motor vehicle is moved as soon as a certain acceleration threshold is exceeded. From the locomotion of the motor vehicle can be concluded that the. _ _
  • the Drive unit is in operation and thus the possibility exists to take the conventional air conditioning in operation. In the case of the sound sensor, this speaks to a certain frequency range in which the operating noise of the drive unit lie.
  • the sensor 100 is preferably mounted on the housing of the air conditioner 12 as shown in FIG. Alternatively, the sensor 100 may also be mounted on the underbody of the vehicle or on another location of the motor vehicle 10, which however necessitates laying of electrical lines.
  • a regeneration of the reformer can always be initiated when the drive unit is in operation, since in this operating state, the cooling capacity of the fuel cell system 14 powered by the air conditioning system 12 is not needed.
  • the conventional air conditioning system of the motor vehicle can then take over the air conditioning.
  • Figure 3 shows a flow chart of the air conditioning operation of the air conditioners 12 according to the invention.
  • the routine of Figure 3, which is executed by the electronic control unit starts at step SlOO when the air conditioner 12 is turned on manually.
  • step SIOL it is determined whether a shutoff condition is satisfied.
  • the switch-off condition may be the operation of the drive unit or a movement of the motor vehicle 10.
  • the shutdown condition is therefore met when the drive unit is in operation, z. B. an internal combustion engine is running, or the motor vehicle 10 is moving becomes. Whether this condition is met can be determined by means of the exhaust gas temperature sensor 98 and / or the sensor 100.
  • the signal supplied by the on-board computer can be evaluated, which indicates whether the drive unit 94 is in operation.
  • step S1O1 the electronic control unit inquires at step S1O1 whether the sound sensor supplies a signal indicating the presence of a sound frequency which the drive unit outputs in an operated state , The process does not proceed to step S102 until the query in step S101 is negative.
  • step S102 it is determined whether the user has selected an automatic standby mode via a selector switch or a corresponding programming of the air conditioner 12. If not, the process proceeds to step S103 where it is determined whether the user has manually selected standby air conditioning. If this is not the case, then the process proceeds to step S104, where it is determined whether the user has manually selected comfort climate control.
  • step S105 at which a comfort air-conditioning is performed.
  • a comfort air-conditioning In this comfort air conditioning of the interior space 78 of the motor vehicle 10 is conditioned to a comfortable temperature (z. B. 18 0 C), by a selection of the various heating and cooling modes is taken by the electronic control unit.
  • the subsequent step S106 determines that this comfort air-conditioning is automatically stopped when the shut-off condition already explained is satisfied. Accordingly, if it is determined in step S106 that the shut-off condition is not satisfied, it is determined in S107 whether the air conditioner 12 has been turned off manually. With a manual shutdown, the process ends at step S112, otherwise the process returns to step S105.
  • step S104 If the user has not selected feel-good conditioning in step S104, the process returns to step S110. If it has been determined in step S102 that an automatic standby air conditioning has been selected, then the process continues from there to step S108, where it is determined whether a comfortable air conditioning has been manually selected by the user. If so, then the process proceeds to step S105, where the well-being conditioning described above is performed.
  • step S109 the standby air conditioning according to the present invention is performed.
  • the temperature in the interior space 78 is controlled to a standby target temperature (eg, 25 ° C) that is different from the comfort temperature. This is realized by suitably selecting the electronic control unit from the described heating and cooling modes. If the outside temperature is high, then the ready set temperature is greater than the comfort temperature. If, however, the outside temperature is low, then the ready set temperature is lower than the comfort temperature.
  • step S109 the process proceeds to step S110 where it is checked if the shut-off condition is satisfied. If so, then the process returns to step S100. Otherwise, the process proceeds to step S11, where it is determined whether the user has turned off the air conditioning manually - if "YES”, then the process at step S112 and if "NO", then the process returns to step S108.
  • the preferred operation of the air conditioning system 12 in practice is to select automatic standby air conditioning. If the drive unit 94 is operated, then the interior space 78 can be conditioned via the vehicle-optimized, very effective and specially designed air conditioning system 92. As soon as the drive unit 94 is switched off (and the occupants possibly leave the motor vehicle 10), the air conditioning system 12 starts the standby air conditioning, which cools the interior space to, for example, 25 ° C. at a high outside temperature. This standby air conditioning operation can be carried out with 12 liters of fuel without any problems for 12 days in continuous operation. The standby air conditioning operation is continued until the user selects a Wohlfühler- mation shortly before departure, which then cools the interior space 78, for example, 18 0 C. The comfort air conditioning is then carried out until the drive unit 94 is restarted.
  • FIG. 4 shows a flowchart for explaining a method according to the invention for regenerating a reformer. If it is determined in the context of operating method explained with reference to FIG. 3, that is to say in particular by the queries in steps S110, S106 and S110, that the switch-off condition for the air conditioning system according to the invention is fulfilled, it is checked in a step R110 whether a regeneration is requested , in particular due to any system parameters, such as pressures, temperatures or expired operating lives. If this is not the case, then no regeneration is carried out, which leads to a return to the normal air conditioning procedure, that is, for a sustainable check, whether the switch-off criterion exists.
  • step R102 If, on the other hand, a regeneration is requested, it is checked in step R102 whether there is an indicator for a long operating phase of the drive unit. If this is not the case, the system returns to the normal air conditioning procedure. If there is an indicator, the regeneration is performed according to step R103.
  • the method according to FIG. 4 therefore assumes that a regeneration must be requested in order for the further necessary condition (R102) to be checked with regard to the execution of the regeneration. It is also possible to check this condition (R102) without regeneration requested beforehand and to perform regeneration on this basis.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
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  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Health & Medical Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un procédé de régénération d'un reformeur (18) affecté à un système de cellules électrochimiques (14), le système de cellules électrochimiques étant un composant d'une climatisation (12) d'un véhicule (10) pouvant être entraîné par un moteur d'entraînement, et alimentant la climatisation en énergie électrique. Selon l'invention, le fonctionnement du moteur d'entraînement du véhicule est une condition pour la régénération du reformeur (18). L'invention concerne également une climatisation (12) pour un véhicule (10).
PCT/DE2007/001674 2006-11-02 2007-09-17 Procédé de régénération d'un reformeur WO2008052498A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006051748.2 2006-11-02
DE102006051748A DE102006051748A1 (de) 2006-11-02 2006-11-02 Verfahren zum Regenerieren eines Reformers

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Publication Number Publication Date
WO2008052498A1 true WO2008052498A1 (fr) 2008-05-08

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PCT/DE2007/001674 WO2008052498A1 (fr) 2006-11-02 2007-09-17 Procédé de régénération d'un reformeur

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Citations (3)

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US20030143445A1 (en) * 2002-01-25 2003-07-31 Daniel Michael J. Apparatus and method for operating a fuel reformer to provide reformate gas to both a fuel cell and an emission abatement device
DE10223949A1 (de) * 2002-05-29 2003-12-24 Webasto Thermosysteme Gmbh System und Verfahren zum Kühlen beziehungsweise Heizen eines Fahrzeuginnenraums
US20050086865A1 (en) * 2003-10-24 2005-04-28 Crane Samuel N.Jr. Method and apparatus for trapping and purging soot from a fuel reformer

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