DE202008010057U1 - Reserve circuit for LPG-powered vehicles - Google Patents

Reserve circuit for LPG-powered vehicles Download PDF

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Publication number
DE202008010057U1
DE202008010057U1 DE202008010057U DE202008010057U DE202008010057U1 DE 202008010057 U1 DE202008010057 U1 DE 202008010057U1 DE 202008010057 U DE202008010057 U DE 202008010057U DE 202008010057 U DE202008010057 U DE 202008010057U DE 202008010057 U1 DE202008010057 U1 DE 202008010057U1
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DE
Germany
Prior art keywords
reserve
fuel
lpg
gas cylinder
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE202008010057U
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German (de)
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TECHNANOVA GmbH
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TECHNANOVA GmbH
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Filing date
Publication date
Application filed by TECHNANOVA GmbH filed Critical TECHNANOVA GmbH
Priority to DE202008010057U priority Critical patent/DE202008010057U1/en
Publication of DE202008010057U1 publication Critical patent/DE202008010057U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0287—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers characterised by the transition from liquid to gaseous phase ; Injection in liquid phase; Cooling and low temperature storage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/03006—Gas tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/06—Fuel tanks characterised by fuel reserve systems
    • B60K15/061—Fuel tanks characterised by fuel reserve systems with level control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/022—Control of components of the fuel supply system to adjust the fuel pressure, temperature or composition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/026—Measuring or estimating parameters related to the fuel supply system
    • F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0221—Fuel storage reservoirs, e.g. cryogenic tanks
    • F02M21/0224—Secondary gaseous fuel storages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/013—Two or more vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/043—Localisation of the removal point in the gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F17C2223/047—Localisation of the removal point in the liquid with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/043—Localisation of the filling point in the gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0311—Air heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0323—Heat exchange with the fluid by heating using another fluid in a closed loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0369—Localisation of heat exchange in or on a vessel
    • F17C2227/0376—Localisation of heat exchange in or on a vessel in wall contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/041—Methods for emptying or filling vessel by vessel
    • F17C2227/042—Methods for emptying or filling vessel by vessel with change-over from one vessel to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/036—Control means using alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0408—Level of content in the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F17C2250/0495—Indicating or measuring characterised by the location the indicated parameter is a converted measured parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0636—Flow or movement of content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • F17C2250/077—Action when predefined value is reached when empty
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/066—Fluid distribution for feeding engines for propulsion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • 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
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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  • Engineering & Computer Science (AREA)
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  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
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  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

Reserveschaltung für flüssiggasbetriebene Fahrzeuge, umfassend:
eine Treibstoffzufuhrleitung (1) zum Anschließen an eine auswechselbare Gasflasche (11) mit Flüssiggas;
eine Treibstoffabgabeleitung (2) zum Anschließen an einen Antriebsmotor (12) des Fahrzeuges;
eine Reserveabgabeleitung (3) zum Anschließen an den Antriebsmotor (12) des Fahrzeuges;
einen Reservebehälter (4), in den die Treibstoffzuführleitung (1) beliebig, die Treibstoffabgabeleitung (2) an einer oberen und die Reserveabgabeleitung (3) an einer unteren Stelle einmünden, wobei der größte Teil des Reservebehälters (4) von einer Wärmeisolierung (7) umgeben ist, die so dimensioniert ist, dass Flüssiggas im Reservebehälter (4) am Sieden eingeschränkt wird, so dass im Reservebehälter (4) in einem Speicherraum (17) Flüssiggas gespeichert wird;
einen Leerzustandssensor (5), der bei Erschöpfen des Inhalts der Gasflasche (11) ein Warn- und Stellsignal abgibt; und
ein Sperrventil (6), das den Durchgang der Treibstoffabgabeleitung (2) beherrscht,
dadurch gekennzeichnet,
dass der Leerzustandssensor ein Grenzwert-Druckschalter (5) mit zwei abwechselnd spannungsführenden Ausgängen ist,...Reserve circuit for liquefied gas powered vehicles, comprising:
a fuel supply line (1) for connecting to a replaceable gas cylinder (11) with LPG;
a fuel delivery line (2) for connection to a drive motor (12) of the vehicle;
a reserve discharge line (3) for connecting to the drive motor (12) of the vehicle;
a reserve tank (4) into which the fuel supply line (1) arbitrarily, the fuel discharge line (2) at an upper and the reserve discharge line (3) open at a lower point, wherein the largest part of the reserve tank (4) of a heat insulation (7) is surrounded, which is dimensioned so that LPG in the reserve tank (4) is limited to boiling, so that in the reserve tank (4) in a storage space (17) LPG is stored;
an empty condition sensor (5) which emits a warning and actuating signal when the contents of the gas cylinder (11) are depleted; and
a check valve (6) which controls the passage of the fuel discharge line (2),
characterized,
that the empty state sensor is a limit pressure switch (5) with two alternately live outputs, ...

Figure 00000001
Figure 00000001

Description

Die Erfindung bezieht sich auf eine Reserveschaltung für Flüssiggas-betriebene Fahrzeuge, mit einer Treibstoffzufuhrleitung, einer Treibstoffabgabeleitung, einer Reserveabgabeleitung, einem Reservebehälter und einem Leerzustandssensor.The The invention relates to a reserve circuit for LPG-powered Vehicles with a fuel supply line, a fuel delivery line, a reserve discharge line, a reserve tank and a Empty condition sensor.

Eine derartige Reserveschaltung ist durch DE-A 10 2007 040 297 bekannt. Im Normalbetrieb des Fahrzeugs wird der Treibstoff aus einer Gasflasche bezogen, die nach Erschöpfung des Inhalts ausgetauscht wird. Wenn der Inhalt der Gasflasche zur Neige geht, wird auf Reservebetrieb aus einem Reservebehälter umgeschaltet. Der Reservebehälter ist von einer Wärmeisolierung umgeben, die so dimensioniert ist, dass Flüssiggas im Reservebehälter am Sieden eingeschränkt wird. Im Reservebehälter bildet sich ein Flüssigkeitsgasspeicher und darüber eine Gasblase. Der Reservebetrieb wird nach Ansprechen des mit der Gasflasche in Verbindung stehenden Leerzustandssensors eingeschaltet, der als Gasdrucksensor oder Temperatursensor ausgebildet sein kann und beim Unterschreiten eines vorgegebenen Grenzwertes eine von der Batteriespannung des Motors abgeleitete Spannung abgibt und einen Signalgeber betätigt. Im Normalbetrieb des Fahrzeugs gibt der Leerzustandssensor keine Spannung ab. Mit dem Reservebetrieb wird die Treibstoffabgabeleitung abgeschaltet und die Reserveabgabeleitung an den Antriebsmotor des Fahrzeugs zugeschaltet. Hinsichtlich des Zustands des Reservebetriebs entstehen jedoch dadurch Unsicherheiten, dass durch Nachverdampfung in der Gasflasche der Druck über den eingestellten Grenzdruck des Leerzustandssensors ansteigen kann, wodurch die Anlage auf Normalbetrieb umschaltet, was den Führer des Fahrzeugs darüber täuschen kann, dass der Inhalt der Gasflasche tatsächlich zur Neige geht. Um dieses Problem anzugehen, ist bereits eine Selbsthalteschaltung zwischen dem Leerzustandssensor und dem Signalgeber eingefügt worden. Wenn der Leerzustandssensor erstmalig anspricht, wird der Signalgeber durch die Selbsthalteschaltung eingeschaltet und bleibt bis zum Gasflaschenwechsel eingeschaltet. Diese Signalgabe lässt aber unberücksichtigt, dass im Reservebetrieb noch der Restinhalt der Gasflasche verbraucht werden kann, ohne die Fahrt zum Gasflaschenwechsel zu gefährden. Für die bequeme Rücksetzung der Selbsthalteschaltung beim Flaschenwechsel sind bei der bekannten Reserveschaltung zusätzliche aufwendige schaltungstechnische Maßnahmen erforderlich.Such a reserve circuit is through DE-A 10 2007 040 297 known. During normal operation of the vehicle, the fuel is obtained from a gas cylinder, which is replaced after exhaustion of the contents. When the contents of the gas cylinder run low, it is switched to reserve operation from a reserve tank. The reserve tank is surrounded by heat insulation dimensioned to limit liquefied gas in the reserve tank from boiling. The reserve tank forms a liquid gas storage and above a gas bubble. The reserve mode is turned on after responding to the gas bottle in connection with the empty condition sensor, which can be configured as a gas pressure sensor or temperature sensor and outputs falls below a predetermined limit value derived from the battery voltage of the engine voltage and actuates a signal generator. During normal operation of the vehicle, the empty state sensor does not output any voltage. With the reserve mode, the fuel delivery line is switched off and the reserve discharge line is connected to the drive motor of the vehicle. However, with regard to the state of the reserve operation, uncertainties arise due to re-evaporation in the gas cylinder which may increase the pressure above the set limit pressure of the idle sensor, causing the system to switch to normal operation, which may deceive the driver of the vehicle that the contents of the gas cylinder are actually used Tilts. To address this problem, a self hold circuit has already been inserted between the idle sensor and the buzzer. When the idle sensor first responds, the buzzer is turned on by the self-hold circuit and remains turned on until the gas cylinder is changed. However, this signaling does not take account of the fact that the residual content of the gas cylinder can still be consumed in reserve operation without jeopardizing the drive to change the gas cylinder. For the convenient reset of the self-holding circuit when changing the bottle additional complex circuit engineering measures are required in the known reserve circuit.

Der Erfindung liegt die Aufgabe zugrunde, eine Reserveschaltung für Flüssiggas-betriebene Fahrzeuge zu schaffen, bei der die Restinhalte der verbrauchten Gasflaschen minimiert werden können.Of the Invention is based on the object, a reserve circuit for Liquefied petroleum gas-powered vehicles to provide at the Remaining contents of the used gas cylinders can be minimized.

Eine weitere Aufgabe besteht darin, mit weniger schaltungstechnischem Aufwand für das Signalisieren des Reservebetriebs auszukommen.A Another object is to do with less circuitry Effort for signaling the reserve operation to get along.

Zur Lösung dieser Aufgabe ist der Leerzustandssensor als Druckschalter mit zwei aktiven Ausgängen gestaltet. Der erste Ausgang ist während des Normalbetriebs (Betrieb des Fahrzeugs durch Flüssiggas aus der Gasflasche) aktiv, d. h. gibt Spannung ab, während der zweite Ausgang des Druckschalters erst dann aktiv wird und Spannung abgibt, wenn der Druck in der Gasflasche unter den eingestellten Grenzwert (von z. B. 2,5 bar) absinkt. Die Treibstoffabgabeleitung wird von einem elektromagnetisch betätigten Sperrventil beherrscht, das geöffnet ist, wenn der erste Ausgang aktiv ist. (Dies steht im Gegensatz zu dem Sperrventil in DE-A 10 2007 040 297 , das stromlos geöffnet ist und erst bei Ansprechen des Leerzustandssensors geschlossen wird.) Wenn der zweite Ausgang aktiv ist, wird der Signalgeber betätigt und signalisiert dem Fahrer des Fahrzeugs, dass er auf Reserve fährt. Gewöhnlich gibt es noch eine Restmenge an Flüssiggas in der Gasflasche, was dazu führen kann, dass durch in die Gasflasche nachströmende Wärme solches restliche Flüssiggas während des Reservebetriebs nachverdampft und sich der Druck am Leerzustandssensor dadurch bis über den eingestellten Grenzwert erhöhen kann, wodurch die Anlage in den Normalbetrieb übergeht. Wenn der Fahrer solche Wechsel beobachtet, weiß er, dass er bis zur Restlosentleerung der Gasflasche fahren kann, ohne den Reservetreibstoff stark anzugreifen.To solve this problem, the empty state sensor is designed as a pressure switch with two active outputs. The first output is active during normal operation (operation of the vehicle by liquid gas from the gas cylinder), ie it outputs voltage, while the second output of the pressure switch only becomes active and gives off voltage when the pressure in the gas cylinder falls below the set limit (of eg 2.5 bar) drops. The fuel delivery line is dominated by an electromagnetically actuated shut-off valve that is open when the first output is active. (This is in contrast to the check valve in DE-A 10 2007 040 297 , which is normally open and is not closed until the empty status sensor responds.) When the second output is active, the signal transmitter is actuated and signals to the driver of the vehicle that he is driving in reserve. Usually there is still a residual amount of liquefied gas in the gas cylinder, which can lead to evaporated by the heat flowing into the gas cylinder such residual liquefied gas during the reserve operation and the pressure at the empty state sensor can thereby increase above the set limit, causing the system in goes over to normal operation. If the driver observes such changes, he knows that he can drive until the gas bottle is completely emptied without heavily attacking the reserve fuel.

Es ist auch möglich, eine Selbsthalteschaltung, die über den Zündschalter des Fahrzeugs mit Strom versorgt wird, an den zweiten aktiven Ausgang des Druckschalters anzuschließen. Wenn der Druckschalter wegen Unterschreitens des Grenzwertes erstmalig umschaltet, wird ein zweiter Signalgeber eingeschaltet, der dauernd Signal gibt, bis die Zündung des Fahrzeugs zum Zeitpunkt des Gasflaschenwechsels ausgeschaltet wird.It is also possible to have a self hold circuit over the ignition switch of the vehicle is powered, to connect to the second active output of the pressure switch. If the pressure switch first falls below the limit value Switches on, a second switch is turned on, the permanent Signal indicates until the ignition of the vehicle at the time the gas cylinder change is switched off.

Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnung beschrieben.One Embodiment of the invention will be with reference to the drawing described.

Diese zeigt eine schematische Darstellung der Reserveschaltung für Flüssiggas-betriebene Fahrzeuge.These shows a schematic representation of the reserve circuit for LPG-powered vehicles.

Die hauptsächlichsten Teile der Reserveschaltung sind:
eine Treibstoffzufuhrleitung 1,
eine Treibstoffabgabeleitung 2,
eine Reserveabgabeleitung 3, ein Leerzustandssensor 5, ein Sperrventil 6 und ein Druck-Reservebehälter 4. Die Leitungen 1, 2 und 3 sind teilweise und der Reservebehälter 4 ist vollständig von einer Wärmeisolierung 7 umgeben. In der Zuführleitung ist ein Rückschlagventil 8 angeordnet, das den Reservebehälter 4 im Reservebetrieb gegenüber einer Gasflasche 11 entkoppelt, die die hauptsächliche Menge an Flüssiggas zum Betrieb des Fahrzeugs enthält und nach Verbrauch des Treibstoffs ausgewechselt wird. Das Sperrventil 6 ist ein Magnetventil, das normalerweise geschlossen ist und durch zugeführte Spannung geöffnet wird. Es befindet sich im Zuge der Treibstoffabgabeleitung 2, die als Rohrstutzen in den oberen Bereich des Reservebehälters 4 einmündet, wo ein Gaspolster 16 gebildet wird. Ein Sicherheitsventil 18, das auf etwa 30 bar eingestellt ist, um vor nicht betriebsbedingten Drucküberschreitungen zu schützen, ist an den Reservebehälter 4 angeschlossen. Die auswechselbare Gasflasche 11 ist über ein Steigrohr mit der Zuführleitung 1 verbunden und führt den Treibstoff über das Rückschlagventil 8 in den Reservebehälter 4, wo er über die Treibstoffabgabeleitung 2 zur Motoranlage 12 gelangt. Dem Verbrennungsmotor ist eine Verdampfungseinrichtung für den flüssigen Treibstoff vorgeschaltet.The main parts of the reserve circuit are:
a fuel supply line 1 .
a fuel delivery line 2 .
a reserve delivery line 3 , an empty condition sensor 5 , a check valve 6 and a pressure reserve tank 4 , The wires 1 . 2 and 3 are partial and the reserve tank 4 is completely from a thermal insulation 7 surround. In the supply line is a check valve 8th arranged, that the reserve container 4 in reserve operation against a gas cylinder 11 decoupled, which contains the main amount of liquefied gas for operating the vehicle and is replaced after consumption of the fuel. The check valve 6 is a solenoid valve that is normally closed and opened by supplied voltage. It is located in the course of the fuel delivery line 2 acting as a pipe socket in the upper area of the reserve tank 4 opens, where a gas cushion 16 is formed. A safety valve 18 , which is set to about 30 bar to protect against non-operational pressure exceedances, is to the reserve tank 4 connected. The replaceable gas cylinder 11 is via a riser with the feed line 1 connected and leads the fuel through the check valve 8th in the reserve tank 4 where he is via the fuel delivery line 2 to the engine system 12 arrives. The internal combustion engine is preceded by an evaporation device for the liquid fuel.

Außerhalb der Wärmeisolierung 7 befinden sich der Leerzustandssensor 5 mit angeschlossenem Signalgeber 53 und gegebenenfalls eine Selbsthalteschaltung 9 mit Signalgeber 21. Der Leerzustandssensor 5 ist ein Gasdrucksensor mit Wechselkontakt, der bei einem voreingestellten Grenzwert von z. B. 2,5 bar anspricht. Der Gasdrucksensor 5 ist elektrisch mit dem Zündschalter 20 des Fahrzeugs verbunden und weist zwei Ausgangsleitungen 51 und 52 auf, die je nach Stellung des Wechselkontakts spannungsführend sind. Oberhalb des eingestellten Grenzdrucks ist der Ausgang 51 aktiv, und es wird eine entsprechende Spannung an das Sperrventil 6 geleitet, um es zu öffnen. Unterhalb des eingestellten Grenzdrucks schaltet der Drucksensor 5 auf den zweiten Ausgang 52 um, der die Spannung dem Signalgeber 53 zuführt, während der erste Ausgang 51 spannungslos wird.Outside the heat insulation 7 are the empty state sensor 5 with connected signal transmitter 53 and optionally a self hold circuit 9 with signal generator 21 , The empty state sensor 5 is a gas pressure sensor with changeover contact, which at a preset limit of z. B. 2.5 bar responds. The gas pressure sensor 5 is electric with the ignition switch 20 connected to the vehicle and has two output lines 51 and 52 on, which are live depending on the position of the changeover contact. Above the set limit pressure is the output 51 active, and there will be a corresponding voltage to the check valve 6 headed to open it. Below the set limit pressure, the pressure sensor switches 5 on the second exit 52 around the voltage to the signaler 53 feeds while the first exit 51 loses tension.

An die zweite Ausgangsleitung 52 kann auch eine Selbsthalteschaltung 9 mit Signalgeber 21 angeschlossen sein, die dafür sorgt, dass beim erstmaligen Ansprechen des Druckschalters 5 der Signalgeber 21 eingeschaltet wird. Das Rücksetzen der Selbsthalteschaltung 9 erfolgt durch Wegnahme der Zündspannung 20, wie dies automatisch beim Auswechseln der Gasflasche 11 eintritt.To the second output line 52 can also be a self-hold circuit 9 with signal generator 21 be connected, which ensures that the first time the pressure switch 5 the signal generator 21 is turned on. Resetting the self-hold circuit 9 takes place by removing the ignition voltage 20 as automatically when replacing the gas cylinder 11 entry.

Im Normalbetrieb des Fahrzeugs wird der Treibstoff aus der Gasflasche 11 bezogen, und zwar strömt der flüssige Treibstoff über die Leitung 1 und das Rückschlagventil 8 in den Reservebehälter 4 und von dort über den Flüssigkeitsspeicherraum 17 und die Treibstoffabgabeleitung 2 und das geöffnete Sperrventil 6 zum Motor 12. Über die Zuführleitung 1 gelangt somit flüssiger Treibstoff in den Reservebehälter 4 und sammelt sich dort in dem Speicherraum 17. Die Wärmeisolierung 7 sorgt dafür, dass ein bestimmter Vorrat an Flüssiggas im Speicherraum 17 verbleibt.During normal operation of the vehicle, the fuel from the gas cylinder 11 referred, and that flows the liquid fuel over the line 1 and the check valve 8th in the reserve tank 4 and from there via the liquid storage space 17 and the fuel delivery line 2 and the open check valve 6 to the engine 12 , About the feed line 1 Thus, liquid fuel enters the reserve tank 4 and collects there in the storage room 17 , The thermal insulation 7 Ensures that a certain supply of liquefied gas in the storage space 17 remains.

Wenn der Inhalt der Gasflasche 11 zur Neige geht, fällt der Druck am Drucksensor 5 ab und gelangt unter den eingestellten Ansprechwert. Dadurch wird die Spannung vom Ausgang 51 auf den Ausgang 52 umgeschaltet, der dadurch aktiv wird und den Signalgeber 53 einschaltet. Damit wird der Reservebetrieb signalisiert. Da der Ausgang 51 inaktiv geworden ist, wird das Sperrventil 6 geschlossen, und der Motor 12 saugt Treibstoff über die Reserveleitung 3 an niedriger Stelle des Reservebehälters 4 an, wobei auch der Restdruck des Treibstoffs in der Gasflasche 11 zur Förderung des Treibstoffs beiträgt.If the contents of the gas cylinder 11 is running low, the pressure falls on the pressure sensor 5 and reaches below the set response value. This will release the voltage from the output 51 on the exit 52 which thereby becomes active and the signal generator 53 turns. This signals the reserve operation. Because the output 51 has become inactive, the check valve 6 closed, and the engine 12 Sucks fuel through the reserve line 3 in the lower part of the reserve tank 4 where also the residual pressure of the fuel in the gas cylinder 11 contributes to the promotion of fuel.

Solange aus dem Reservebehälter 4 Treibstoff entnommen wird, wird die Restmenge an Treibstoff in der Gasflasche 11 gewissermaßen geschont, d. h. verdampfender Treibstoff wird kaum weggeführt, so dass in die Gasflasche 11 nachströmende Wärme zum Druckanstieg führt, wodurch es zum Umschalten des Druckschalters 5 kommen kann. In einem solchen Fall geht die Schaltung gewissermaßen in den Normalbetrieb über, d. h. der Ausgang 51 wird aktiv, das Sperrventil 6 geöffnet und der Motor 12 saugt den Treibstoff letztlich aus der Gasflasche 11 an, der jedoch im Gegensatz zu dem eigentlichen Normalbetrieb in verdampfter Form vorliegt. In diesem Betriebszustand wird der Signalgeber 53 erlöschen. Es hat sich in überraschender Weise gezeigt, dass die Motoranlage 12 auch mit lediglich nachverdampftem Treibstoff betrieben werden kann, d. h. es muss nicht der flüssige Treibstoff zugeführt werden, um den Motor ohne Stottern zu fahren. Dies ist die Basis der Erfindung, die Restinhalte der an sich verbrauchten Gasflaschen noch zu nutzen.As long as from the reserve tank 4 Fuel is removed, the remaining amount of fuel in the gas cylinder 11 spared so to speak, ie evaporating fuel is hardly carried away, so that in the gas cylinder 11 inflowing heat leads to pressure increase, which causes it to switch the pressure switch 5 can come. In such a case, the circuit will effectively go into normal operation, ie the output 51 becomes active, the check valve 6 open and the engine 12 ultimately sucks the fuel out of the gas bottle 11 but in contrast to the actual normal operation in vaporized form. In this operating state, the signal generator 53 go out. It has surprisingly been found that the engine system 12 can also be operated with only nachverdampftem fuel, ie it must not be supplied to the liquid fuel to drive the engine without stuttering. This is the basis of the invention, the remaining contents of the used gas cylinders still to use.

Im Falle, dass eine Selbsthalteschaltung 9 vorhanden ist, wird im Reservebetrieb der Signalgeber 21 eingeschaltet bleiben, gespeist über die Selbsthalteschaltung, die ihre Stromversorgung über den Zündschalter 20 bezieht. Auf diese Weise kann dem Fahrer signalisiert werden, dass der Inhalt der Gasflasche 11 zur Neige geht, dass aber noch mit Treibstoff aus der Gasflasche gefahren wird. Es kann zu periodischen Umschaltvorgängen kommen, und zwar etwa vier bis fünf Mal. Ein geschickter Fahrer kann so die Gasflasche 11 restlos leeren.In the case of a self-holding circuit 9 is present, the signal generator is in the reserve mode 21 Stay powered on, powered by the self-hold circuit, which supplies its power via the ignition switch 20 refers. In this way, the driver can be signaled that the contents of the gas cylinder 11 it is running low, but still being driven out of the gas cylinder with fuel. It can come to periodic switching, about four to five times. A skilled driver can use the gas cylinder 11 empty completely.

Es ist auch möglich, auf den Signalgeber 53 zu verzichten, wenn man die Selbsthalteschaltung 9 mit dem Signalgeber 21 vorgesehen hat. Der Fahrer kann darauf vertrauen, dass ihm 5 bis 10 Minuten Fahrzeit nach Aufleuchten der Selbsthalteschaltung „geschenkt” werden, weil der Treibstoff durch Nachverdampfung der Restmenge noch aus der Gasflasche bestritten wird.It is also possible on the signaler 53 to dispense with the self-holding circuit 9 with the signal transmitter 21 has provided. The driver can trust that he will be given 5 to 10 minutes driving time after lighting up the self-holding circuit, because the fuel is still denied by re-evaporation of the remaining amount from the gas cylinder.

Der Treibstoff in dem Flüssigkeitsspeicherraum 17 reicht auf jeden Fall aus, zur Wechselstation der Gasflasche zu fahren und dort eine neue gefüllte Gasflasche zu übernehmen.The fuel in the fluid storage room 17 is definitely enough, to the change station to drive the gas cylinder and take over there a new filled gas cylinder.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 102007040297 A [0002, 0005] - DE 102007040297 A [0002, 0005]

Claims (4)

Reserveschaltung für flüssiggasbetriebene Fahrzeuge, umfassend: eine Treibstoffzufuhrleitung (1) zum Anschließen an eine auswechselbare Gasflasche (11) mit Flüssiggas; eine Treibstoffabgabeleitung (2) zum Anschließen an einen Antriebsmotor (12) des Fahrzeuges; eine Reserveabgabeleitung (3) zum Anschließen an den Antriebsmotor (12) des Fahrzeuges; einen Reservebehälter (4), in den die Treibstoffzuführleitung (1) beliebig, die Treibstoffabgabeleitung (2) an einer oberen und die Reserveabgabeleitung (3) an einer unteren Stelle einmünden, wobei der größte Teil des Reservebehälters (4) von einer Wärmeisolierung (7) umgeben ist, die so dimensioniert ist, dass Flüssiggas im Reservebehälter (4) am Sieden eingeschränkt wird, so dass im Reservebehälter (4) in einem Speicherraum (17) Flüssiggas gespeichert wird; einen Leerzustandssensor (5), der bei Erschöpfen des Inhalts der Gasflasche (11) ein Warn- und Stellsignal abgibt; und ein Sperrventil (6), das den Durchgang der Treibstoffabgabeleitung (2) beherrscht, dadurch gekennzeichnet, dass der Leerzustandssensor ein Grenzwert-Druckschalter (5) mit zwei abwechselnd spannungsführenden Ausgängen ist, von denen der erste Ausgang (51) das Sperrventil (6) offen hält und der zweite Ausgang (52) einen Signalgeber (21; 53) mittelbar oder unmittelbar betätigt, wobei wegen Nachverdampfung in der Gasflasche (11) nach Leerzustandsfeststellung es zu periodischen Druckerhöhungen und Umschaltungen des Druckschalters (5) kommen kann mit der Folge der periodischen Ansteuerung des Sperrventils (6) im Öffnungssinne.A reserve circuit for liquefied gas powered vehicles, comprising: a fuel supply line ( 1 ) for connection to a replaceable gas cylinder ( 11 ) with LPG; a fuel delivery line ( 2 ) for connection to a drive motor ( 12 ) of the vehicle; a reserve delivery line ( 3 ) for connection to the drive motor ( 12 ) of the vehicle; a reserve tank ( 4 ) into which the fuel supply line ( 1 ) arbitrarily, the fuel delivery line ( 2 ) at an upper and the reserve discharge line ( 3 ) at a lower point, with the largest part of the reserve container ( 4 ) of a thermal insulation ( 7 ), which is dimensioned so that LPG in the reserve tank ( 4 ) is restricted to boiling, so that in the reserve container ( 4 ) in a memory space ( 17 ) LPG is stored; an empty condition sensor ( 5 ), which when exhausting the contents of the gas cylinder ( 11 ) emits a warning and control signal; and a check valve ( 6 ), the passage of the fuel delivery line ( 2 ), characterized in that the empty state sensor is a limit pressure switch ( 5 ) with two alternating live outputs, of which the first output ( 51 ) the check valve ( 6 ) and the second output ( 52 ) a signal generator ( 21 ; 53 ) indirectly or directly actuated, wherein due to re-evaporation in the gas cylinder ( 11 ) after empty state detection it to periodic pressure increases and switching the pressure switch ( 5 ) can come with the result of periodic control of the check valve ( 6 ) in the opening direction. Reserveschaltung nach Anspruch 1, dadurch gekennzeichnet, dass zur mittelbaren Betätigung des Signalgebers (21) eine Selbsthalteschaltung (9), die über den Zündschalter (20) des Fahrzeugs mit elektrischer Spannung versorgt wird, an den zweiten Ausgang (52) des Druckschalters (5) angeschlossen ist, um bei dessen erstmaligem Umschalten den Signalgeber (21) einzuschalten.Reserve circuit according to claim 1, characterized in that for the indirect actuation of the signal generator ( 21 ) a self hold circuit ( 9 ), via the ignition switch ( 20 ) of the vehicle is supplied with electrical power to the second output ( 52 ) of the pressure switch ( 5 ) is connected in order to switch the signal generator ( 21 ). Reserveschaltung nach Anspruch 2, dadurch gekennzeichnet, dass die Selbsthalteschaltung (9) durch Wegnahme der über den Zündschalter (20) zugeführten Spannung rücksetzbar ist.Reserve circuit according to claim 2, characterized in that the self-holding circuit ( 9 ) by removing the via the ignition switch ( 20 ) supplied voltage can be reset. Reserveschaltung nach Anspruch 1, dadurch gekennzeichnet, dass bei unmittelbarer Betätigung des Signalgebers (53) dieser periodisch aufleuchtet, wenn der Reservebehälter (4) bei der Fahrt des Fahrzeugs angezapft wird.Reserve circuit according to Claim 1, characterized in that when the signal generator is actuated directly ( 53 ) this periodically lights up when the reserve tank ( 4 ) is tapped while driving the vehicle.
DE202008010057U 2008-07-25 2008-07-25 Reserve circuit for LPG-powered vehicles Expired - Lifetime DE202008010057U1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040297A1 (en) 2006-08-29 2008-03-06 Franz-Josef Leis Reserve circuit for e.g. fork-lift truck, has empty condition sensor giving warning and adjusting signal during exhausting of contents of gas cylinder, and check valve checking passage of fuel delivery line and controlled by sensor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040297A1 (en) 2006-08-29 2008-03-06 Franz-Josef Leis Reserve circuit for e.g. fork-lift truck, has empty condition sensor giving warning and adjusting signal during exhausting of contents of gas cylinder, and check valve checking passage of fuel delivery line and controlled by sensor

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