EP3455484A1 - Fuel supply system for a gas-operated internal combustion engine and method for operating a fuel supply system - Google Patents

Fuel supply system for a gas-operated internal combustion engine and method for operating a fuel supply system

Info

Publication number
EP3455484A1
EP3455484A1 EP17711625.8A EP17711625A EP3455484A1 EP 3455484 A1 EP3455484 A1 EP 3455484A1 EP 17711625 A EP17711625 A EP 17711625A EP 3455484 A1 EP3455484 A1 EP 3455484A1
Authority
EP
European Patent Office
Prior art keywords
fuel
pressure
supply system
fuel tank
gas
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.)
Withdrawn
Application number
EP17711625.8A
Other languages
German (de)
French (fr)
Inventor
Florian Herzenjak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3455484A1 publication Critical patent/EP3455484A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • F02D19/024—Control of components of the fuel supply system to adjust the fuel mass or volume flow by controlling fuel injectors
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
    • 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
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
    • 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
    • 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
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239—Pressure or flow regulators therefor
    • 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
    • F02M21/06—Apparatus for de-liquefying, e.g. by 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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into the cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel 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
    • 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
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2205/03—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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • 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
    • F17C2225/03—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
    • 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
    • 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
    • F17C2227/0388—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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • 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
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F17C2250/0491—Parameters measured at or inside 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
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • 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
    • F17C2265/02—Mixing fluids
    • F17C2265/022—Mixing fluids identical fluid
    • 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

Definitions

  • the invention relates to a fuel supply system for a gas-powered
  • Fuel supply system of the use of natural gas for operating the internal combustion engine are systems in which the natural gas in the liquefied state, i. in a cryogenic state, stored in a fuel tank.
  • the fuel or the natural gas has a temperature of less than -160 ° C. At these temperatures, the natural gas in the fuel tank is at a pressure between about 5bar and 16bar
  • the natural gas is typically at least 90% methane, and at most 10% others, heavier than the methane, i. at higher temperatures, volatiles such as ethane, propane and others.
  • the temperature of the fuel in the fuel tank may be during the
  • Safety or bursting reasons may only be operated up to a maximum pressure, which is for example 20bar, is to ensure that the pressure in the fuel tank does not exceed the mentioned critical pressure.
  • a device in the manner of a pressure control valve is used for this purpose, which has for example a spring-loaded valve member which opens a passage in the direction of a discharge line for the fuel in the direction of an evaporator device from a certain pressure.
  • the device is also known as a so-called "economizer regulator.”
  • the present invention seeks to provide a fuel supply system for a gas-fueled internal combustion engine and a method for operating a
  • An optimized operation of an internal combustion engine or a gas valve is understood in particular to be an optimized pilot control, for example a specific control frequency of the gas valve, in order to optimize the exhaust gas values.
  • the invention is based on the idea that with knowledge of the characteristics of the device for feeding the gaseous phase of the fuel into the extraction line, i. from which pressure the device starts to open and at which pressure the device reaches its maximum open position, it is aware of the pressure detected by a pressure sensor, which detects the mixing pressure of the liquid phase of the fuel and the gaseous phase of the fuel, on the composition of the Fuel can be closed. From the composition of the fuel can be in turn the
  • Pressure sensor detected pressure value is thus used, for example, to influence the required due to a load request driving time or driving frequency of a gas valve with a pilot value due to the composition of the fuel.
  • Fuel supply system for a gas-fueled internal combustion engine are listed in the subclaims.
  • the arrangement of the pressure sensor in the immediate vicinity in front of or behind an evaporator device which serves to heat the liquid phase of the fuel and thereby evaporate.
  • Fuel is conveyed from the fuel tank in the direction of the evaporator device only by the pressure in the fuel tank. It is thus not a separate, the cost-increasing fuel delivery device or the
  • Fuel pump required.
  • a fuel delivery device that conveys the liquid fuel toward the evaporator device.
  • Fig. 1 is a greatly simplified representation of a portion of a
  • Fig. 2 is a characteristic of a arranged in the fuel supply system according to FIG. 1 in the region of the fuel tank
  • FIG. 1 a fuel supply system 100 for a gas-fueled internal combustion engine using cryogenic fuel 1 in the form of natural gas is shown greatly simplified.
  • Fuel supply system 100 includes a fuel tank 10 configured to receive fuel 1 at cryogenic temperatures, i. at
  • the fuel tank 10 by way of example in a conventional manner a
  • a gap 13 between the outer shell 1 1 and the inner tank 12 is typically evacuated to thermally isolate the inner tank 12 and minimize heat input from the outer environment into the inner tank 12 and thus the fuel 1.
  • the inner tank 12, as known per se, is subdivided by means of a partition wall 14 or the like in order to allow a pressure equalization at different temperatures in the inner tank 12.
  • the fuel 1 has a fill level 2. Above the filling level 2, the fuel 1 is present (completely) in its gaseous phase, while below the filling level 2 the fuel 1 is present (completely) in the liquid phase.
  • the withdrawal line 16 promotes the fuel 1 from the fuel tank 10 due to the pressure prevailing in the fuel tank 10 overpressure, which is for example between 5bar and 16bar, in a Evaporator 20, which serves the frozen or
  • Evaporator 20 is followed by a pressure relief valve 21, which in turn has a connection to a buffer memory 22.
  • a shut-off valve 23 connects, which serves to prevent a non-operated internal combustion engine, a promotion of gaseous fuel 1 in the direction of the combustion chamber of the internal combustion engine.
  • a supply line 24 leads to a gas valve 30, which is arranged by way of example in the region of a suction pipe 3 of the internal combustion engine and serves to inject the gaseous fuel 1 in the region of the suction pipe 3. From there, the fuel reaches the area of a combustion chamber of the internal combustion engine, not shown, with the inlet valve correspondingly open.
  • the control of the gas valve 30 via a control device 50, the other
  • Input variables for controlling the gas valve 30 are supplied as input values, in particular a desired load and other parameters.
  • a device 40 acting as a pressure regulating valve is provided for feeding in the gaseous phase of the fuel 1 into the withdrawal line 16.
  • the device 40 is arranged above the fill level 2 in the inner tank 12 and has a Infeed line 41, which outside of the fuel tank 10 in the
  • Extraction line 16 in front of the evaporator device 20 in the extraction line 16 opens. Between the feed point 42 of the feed line 41 in the
  • a pressure sensor 45 is also arranged, which serves for detecting the pressure prevailing in the extraction line 16 pressure, and which supplies this pressure to the control device 50 as an input variable.
  • FIG. 2 shows the characteristic K of the open position Q of the device 40 above the pressure p in the inner tank 12.
  • the device 40 is fully closed, i. the opening position is 0%.
  • the maximum open position Q of the device 40 is 100%, from which only fuel 1 above the fill level 2 is removed from the inner tank 12.
  • the gaseous phase of the fuel 1 is finally fed to the evaporator unit 20.
  • the control device 50 has an algorithm or a map which allows a connection between the pressure p detected in the extraction line 16 by the pressure sensor 45 and the composition of the constituents of the fuel 1. Under a composition should be a percentage
  • the controller 50 calculates a pilot value V, which is used to adjust the control of the gas valve 30. Furthermore, by means of an exhaust gas or lambda probe, not shown, the actual exhaust gas quality or

Abstract

The invention relates to a fuel supply system (100) for a gas-operated internal combustion engine, comprising at least one gas valve (30), which can be controlled by a control device (50) in order to at least indirectly blow gas into a combustion chamber of the internal combustion engine, comprising a fuel tank (10) for storing cryogenic fuel (1), an evaporating device (20) for the fuel (1), which evaporating device is connected to the fuel tank (10) by means of a removal line (16), and a device (40) for feeding a gaseous phase of the fuel (1) from the fuel tank (10) into the removal line (16), wherein the amount of the gaseous fuel (1) fed by the device (40) depends on the pressure (p) in the fuel tank.

Description

Beschreibung  description
Kraftstoffversorgungssvstem für eine gasbetriebene Brennkraftmaschine undKraftstoffversorgungssvstem for a gas-powered internal combustion engine and
Verfahren zum Betreiben eines Kraftstoffversorgungssystems Method for operating a fuel supply system
Stand der Technik Die Erfindung betrifft ein Kraftstoffversorgungssystem für eine gasbetriebeneThe invention relates to a fuel supply system for a gas-powered
Brennkraftmaschine nach dem Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung ein Verfahren zum Betreiben eines Kraftstoffversorgungssystems nach dem Oberbegriff des unabhängigen Verfahrensanspruchs. Aus der Praxis sind bereits Kraftstoffversorgungssysteme für gasbetriebeneInternal combustion engine according to the preamble of claim 1. Furthermore, the invention relates to a method for operating a fuel supply system according to the preamble of the independent method claim. In practice, fuel supply systems for gas-powered
Brennkraftmaschinen bzw. Verfahren zum Betreiben von Internal combustion engine or method for operating
Kraftstoffversorgungssystemen nach den Oberbegriffen der beiden Fuel supply systems according to the generic terms of the two
unabhängigen Ansprüche bekannt. Insbesondere dient ein derartiges independent claims known. In particular, such serves
Kraftstoffversorgungssystem der Verwendung von Erdgas zum Betreiben der Brennkraftmaschine. Bekannt sind hierbei Systeme, bei denen das Erdgas in verflüssigtem Zustand, d.h. in kryogenem Zustand, in einem Kraftstofftank gespeichert ist. Typischerweise weist der Kraftstoff bzw. das Erdgas dabei eine Temperatur von weniger als -160°C auf. Bei diesen Temperaturen ist das Erdgas in dem Kraftstofftank bei einem Druck zwischen etwa 5bar und 16bar Fuel supply system of the use of natural gas for operating the internal combustion engine. Known here are systems in which the natural gas in the liquefied state, i. in a cryogenic state, stored in a fuel tank. Typically, the fuel or the natural gas has a temperature of less than -160 ° C. At these temperatures, the natural gas in the fuel tank is at a pressure between about 5bar and 16bar
gespeichert. Weiterhin besteht das Erdgas typischerweise zu wenigstens 90% aus Methan, und aus maximal 10% aus anderen, gegenüber dem Methan schwerer, d.h. bei höheren Temperaturen verflüchtenden Bestandteilen, wie Ethan, Propan und anderen. Die Temperatur des Kraftstoffs in dem Kraftstofftank kann sich während dessaved. Furthermore, the natural gas is typically at least 90% methane, and at most 10% others, heavier than the methane, i. at higher temperatures, volatiles such as ethane, propane and others. The temperature of the fuel in the fuel tank may be during the
Fahrbetriebs oder aber aufgrund äußerer Bedingungen ändern. Dies bewirkt ebenfalls eine Änderung des Drucks in dem Kraftstofftank. Insbesondere findet bei einer Erwärmung des Kraftstofftanks eine Druckerhöhung des Kraftstoffs bzw. Erdgases im Kraftstofftank statt. Da der Kraftstofftank jedoch aus Driving operation or due to external conditions. This also causes a change in the pressure in the fuel tank. In particular, during a heating of the fuel tank, an increase in pressure of the fuel or natural gas takes place in the fuel tank. However, since the fuel tank off
Sicherheits- bzw. Berstgründen nur bis zu einem maximalen Druck betrieben werden darf, der beispielsweise 20bar beträgt, ist sicherzustellen, dass der Druck im Kraftstofftank den angesprochenen kritischen Druck nicht übersteigt. In der Praxis wird hierzu ein Einrichtung in Art eines Druckregelventils verwendet, das beispielsweise über ein federbelastetes Ventilglied verfügt, das ab einem bestimmten Druck einen Durchlass in Richtung einer Entnahmeleitung für den Kraftstoff in Richtung einer Verdampfereinrichtung öffnet. Eine derartige Safety or bursting reasons may only be operated up to a maximum pressure, which is for example 20bar, is to ensure that the pressure in the fuel tank does not exceed the mentioned critical pressure. In practice, a device in the manner of a pressure control valve is used for this purpose, which has for example a spring-loaded valve member which opens a passage in the direction of a discharge line for the fuel in the direction of an evaporator device from a certain pressure. Such
Einrichtung ist auch als sogenannter„Economizer Regulator" bekannt. Je höher der Druck im Kraftstofftank, desto mehr gasförmige Bestandteile des Kraftstoffs werden über die Druckregeleinrichtung der flüssigen Phase des Kraftstoffs in der Entnahmeleitung beigegeben bzw. zugemischt. Wesentlich ist dabei, dass in der gasförmigen Phase des Kraftstoffs, d.h. oberhalb des Füllpegels des flüssigen Kraftstoffs im Kraftstofftank, sich hauptsächlich die zuerst verflüchtenden Bestandteile des Kraftstoffs, d.h. hauptsächlich Methan, befindet. Dies wiederum hat zur Folge, dass mit steigendem Druck in dem Kraftstofftank mehr und mehr Methan der flüssigen Phase des Kraftstoffs beigemengt und anschließend vor dem Zuführen zu einem Gasventil verdampft wird. Da jedoch Methan ein anderes stöchiometrisches Verhältnis (mit Sauerstoff bzw. Luft) zur optimalen The device is also known as a so-called "economizer regulator." The higher the pressure in the fuel tank, the more gaseous constituents of the fuel are added or admixed via the pressure regulating device to the liquid phase of the fuel in the withdrawal line of fuel, ie above the fill level of the liquid fuel in the fuel tank, is primarily the first volatilizing constituents of the fuel, ie mainly methane, which in turn causes more and more methane of the liquid phase of the fuel as the pressure in the fuel tank increases is then added to a gas valve before being fed to a gas valve, however, since methane has a different stoichiometric ratio (with oxygen or air) to the optimum
Verbrennung benötigt als der flüssige Bestandteil des Kraftstoffs, der neben Methan noch die schwerer verflüchtbaren Bestandteile aufweist, wird ein Combustion is required as the liquid component of the fuel, which in addition to methane still has the heavier volatiles
Gasventil in der Praxis in Abhängigkeit von jeweils herrschenden Druck im Kraftstofftank mit Gas versorgt, das ein anderes stöchiometrisches Verhältnis zur optimalen Verbrennung benötigt. Da beim Betrieb der Brennkraftmaschine nicht nur ein Leistungs- bzw. Lastwunsch erfüllt werden soll, sondern auch die Gas valve in practice, depending on the prevailing pressure in the fuel tank supplied with gas that requires a different stoichiometric ratio for optimum combustion. Since the operation of the internal combustion engine not only a power or load request to be met, but also the
Einhaltung von Abgaswerten erforderlich ist, die mittels einer Abgassonde überwacht bzw. geregelt werden können, ist es wünschenswert, die Compliance with exhaust levels is required, which can be monitored or regulated by means of an exhaust gas probe, it is desirable that
Zusammensetzung des dem Gasventil zugeführten Gases zu kennen, um durch eine entsprechende (Vor-) Ansteuerung des Gasventils eine optimale, d.h. To know the composition of the gas supplied to the gas valve to an optimal, i.
möglichst abgasarme Verbrennung des Gases zu ermöglichen. To allow for low-emission combustion of the gas.
Offenbarung der Erfindung Disclosure of the invention
Ausgehend von dem dargestellten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Kraftstoffversorgungssystem für eine gasbetriebene Brennkraftmaschine sowie ein Verfahren zum Betreiben eines Based on the illustrated prior art, the present invention seeks to provide a fuel supply system for a gas-fueled internal combustion engine and a method for operating a
Kraftstoffversorgungssystems nach den Oberbegriffen der beiden unabhängigenFuel supply system according to the generic terms of the two independent
Ansprüche derart weiterzubilden, dass ein optimierter Betrieb der Brennkraftmaschine bzw. des Gasventils ermöglicht wird. Unter einem optimierten Betrieb einer Brennkraftmaschine bzw. eines Gasventils wird insbesondere eine optimierte Voransteuerung, zum Beispiel eine bestimmte Ansteuerfrequenz des Gasventils verstanden, um die Abgaswerte zu optimieren. Develop further claims such that an optimized operation of the Internal combustion engine or the gas valve is made possible. An optimized operation of an internal combustion engine or a gas valve is understood in particular to be an optimized pilot control, for example a specific control frequency of the gas valve, in order to optimize the exhaust gas values.
Diese Aufgabe wird erfindungsgemäß bei einem Kraftstoffversorgungssystem für eine gasbetriebene Brennkraftmaschine sowie einem Verfahren zum Betreiben eines Kraftstoffversorgungssystems mit den Merkmalen der beiden This object is achieved in a fuel supply system for a gas-fueled internal combustion engine and a method for operating a fuel supply system with the features of the two
unabhängigen Ansprüche gelöst. solved independent claims.
Der Erfindung liegt die Idee zugrunde, dass bei Kenntnis der Charakteristik der Einrichtung zur Einspeisung der gasförmigen Phase des Kraftstoffs in die Entnahmeleitung, d.h. ab welchem Druck die Einrichtung zu öffnen beginnt und bei welchem Druck die Einrichtung ihre maximale Öffnungsstellung erreicht, es in Kenntnis des von einem Drucksensor erfassten Drucks, der den Mischdruck aus der flüssigen Phase des Kraftstoffs und der gasförmigen Phase des Kraftstoffs erfasst, auf die Zusammensetzung des Kraftstoffs geschlossen werden kann. Aus der Zusammensetzung des Kraftstoffs lässt sich wiederum das The invention is based on the idea that with knowledge of the characteristics of the device for feeding the gaseous phase of the fuel into the extraction line, i. from which pressure the device starts to open and at which pressure the device reaches its maximum open position, it is aware of the pressure detected by a pressure sensor, which detects the mixing pressure of the liquid phase of the fuel and the gaseous phase of the fuel, on the composition of the Fuel can be closed. From the composition of the fuel can be in turn the
stöchiometrische Verhältnis berechnen, bei der der Kraftstoff bzw. das Gas optimal verbrennt, um möglichst gute Abgaswerte zu erzielen. Der von einemCalculate the stoichiometric ratio at which the fuel or the gas burns optimally in order to achieve the best possible exhaust gas values. The one by one
Drucksensor erfasste Druckwert wird somit dazu benutzt, um beispielsweise die aufgrund eines Lastwunsches erforderliche Ansteuerzeit bzw. Ansteuerfrequenz eines Gasventils mit einem Vorsteuerwert aufgrund der Zusammensetzung des Kraftstoffs zu beeinflussen. Pressure sensor detected pressure value is thus used, for example, to influence the required due to a load request driving time or driving frequency of a gas valve with a pilot value due to the composition of the fuel.
Vorteilhafte Weiterbildungen des erfindungsgemäßen Advantageous developments of the invention
Kraftstoffversorgungssystems für eine gasbetriebene Brennkraftmaschine sind in den Unteransprüchen aufgeführt. Besonders bevorzugt ist die Anordnung des Drucksensors in unmittelbarer Nähe vor bzw. hinter einer Verdampfereinrichtung, die dazu dient, die flüssige Phase des Kraftstoffs zu erwärmen und dadurch zu verdampfen. Durch die relativ nahe der Verdampfereinheit und somit auch dem Kraftstofftank vorgesehene vorteilhafte Anordnung werden insbesondere andere Einflüsse, die ggf. zu einer Druckerhöhung des Kraftstoffs führen, minimiert bzw. ausgeschlossen. Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, dass der Fuel supply system for a gas-fueled internal combustion engine are listed in the subclaims. Particularly preferably, the arrangement of the pressure sensor in the immediate vicinity in front of or behind an evaporator device, which serves to heat the liquid phase of the fuel and thereby evaporate. By virtue of the advantageous arrangement provided relatively close to the evaporator unit and thus also to the fuel tank, in particular other influences which possibly lead to an increase in the pressure of the fuel are minimized or eliminated. A further advantageous embodiment of the invention provides that the
Kraftstoff aus dem Kraftstofftank in Richtung der Verdampfereinrichtung lediglich durch den Überdruck in dem Kraftstofftank gefördert wird. Es ist somit keine separate, die Kosten erhöhende Kraftstofffördereinrichtung bzw. die Fuel is conveyed from the fuel tank in the direction of the evaporator device only by the pressure in the fuel tank. It is thus not a separate, the cost-increasing fuel delivery device or the
Kraftstoffpumpe erforderlich. Alternativ ist es selbstverständlich möglich, eine Kraftstofffördereinrichtung vorzusehen, die den flüssigen Kraftstoff in Richtung der Verdampfereinrichtung fördert. Fuel pump required. Alternatively, it is of course possible to provide a fuel delivery device that conveys the liquid fuel toward the evaporator device.
Bevorzugt ist darüber hinaus der Einsatz von Gasventilen, die im In addition, the use of gas valves is preferred in the
Saugrohrbereich der Brennkraftmaschine angeordnet sind. Die Erfindung soll jedoch grundsätzlich auch für Gasventile Verwendung finden können, bei dem jedem Brennraum der Brennkraftmaschine ein unmittelbar in den Brennraum einblasendes Gasventil zugeordnet ist. Saugrohrbereich the internal combustion engine are arranged. However, the invention should in principle also be used for gas valves, in which each combustion chamber of the internal combustion engine is associated with a directly injecting into the combustion chamber gas valve.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung. Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing.
Diese zeigt in: This shows in:
Fig. 1 eine stark vereinfachte Darstellung eines Teilbereichs eines Fig. 1 is a greatly simplified representation of a portion of a
Kraftstoffversorgungssystem für eine gasbetriebene Brennkraftmaschine und  Fuel supply system for a gas-powered internal combustion engine and
Fig. 2 eine Kennlinie einer bei dem Kraftstoffversorgungssystem gemäß der Fig. 1 im Bereich des Kraftstofftanks angeordneten Fig. 2 is a characteristic of a arranged in the fuel supply system according to FIG. 1 in the region of the fuel tank
Druckregeleinrichtung.  Pressure control device.
In der Fig. 1 ist stark vereinfacht ein Kraftstoffversorgungssystem 100 für eine gasbetriebene Brennkraftmaschine unter Verwendung von kryogenem Kraftstoff 1 in Form von Erdgas stark vereinfacht dargestellt. Das In FIG. 1, a fuel supply system 100 for a gas-fueled internal combustion engine using cryogenic fuel 1 in the form of natural gas is shown greatly simplified. The
Kraftstoffversorgungssystem 100 umfasst einen Kraftstofftank 10, der dazu ausgebildet ist, den Kraftstoff 1 bei kryogenen Temperaturen, d.h. bei Fuel supply system 100 includes a fuel tank 10 configured to receive fuel 1 at cryogenic temperatures, i. at
Temperaturen von typischerweise weniger als -160°C, zu speichern. Hierzu weist der Kraftstofftank 10 beispielhaft in an sich bekannter Art und Weise eine Temperatures of typically less than -160 ° C, store. For this purpose, the fuel tank 10 by way of example in a conventional manner a
Außenhülle 11 auf, die einen Innentank 12 umschließt. Ein Zwischenraum 13 zwischen der Außenhülle 1 1 und dem Innentank 12 ist typischerweise evakuiert, um den Innentank 12 thermisch zu isolieren bzw. einen Wärmeeintrag von der äußeren Umgebung in den Innentank 12 und somit den Kraftstoff 1 zu minimieren. Weiterhin ist der Innentank 12, wie an sich bekannt, mittels einer Trennwand 14 oder ähnlichem unterteilt, um einen Druckausgleich bei unterschiedlichen Temperaturen im Innentank 12 zu ermöglichen. Innerhalb eines Bereichs 15 des Innentanks 12, aus dem die Förderung von Kraftstoff 1 stattfindet, weist der Kraftstoff 1 einen Füllpegel 2 auf. Oberhalb des Füllpegels 2 ist der Kraftstoff 1 (vollständig) in seiner gasförmigen Phase vorhanden, während unterhalb des Füllpegels 2 der Kraftstoff 1 (vollständig) in flüssiger Phase vorliegt. Outer shell 11, which encloses an inner tank 12. A gap 13 between the outer shell 1 1 and the inner tank 12 is typically evacuated to thermally isolate the inner tank 12 and minimize heat input from the outer environment into the inner tank 12 and thus the fuel 1. Furthermore, the inner tank 12, as known per se, is subdivided by means of a partition wall 14 or the like in order to allow a pressure equalization at different temperatures in the inner tank 12. Within a region 15 of the inner tank 12 from which the delivery of fuel 1 takes place, the fuel 1 has a fill level 2. Above the filling level 2, the fuel 1 is present (completely) in its gaseous phase, while below the filling level 2 the fuel 1 is present (completely) in the liquid phase.
Unterhalb des Füllpegels 2 des Kraftstoffs 1 mündet in dem Innentank 12 eine Entnahmeleitung 16 für den Kraftstoff 1. Die Entnahmeleitung 16 fördert den Kraftstoff 1 aus dem Kraftstofftank 10 aufgrund des in dem Kraftstofftank 10 herrschenden Überdrucks, der beispielsweise zwischen 5bar und 16bar beträgt, in eine Verdampfereinrichtung 20, die dazu dient, den tiefgekühlten bzw. Below the filling level 2 of the fuel 1 opens into the inner tank 12, a discharge line 16 for the fuel 1. The withdrawal line 16 promotes the fuel 1 from the fuel tank 10 due to the pressure prevailing in the fuel tank 10 overpressure, which is for example between 5bar and 16bar, in a Evaporator 20, which serves the frozen or
flüssigen Kraftstoff 1 zu erwärmen bzw. zu vergasen. An die to heat or gasify liquid fuel 1. To the
Verdampfereinrichtung 20 schließt sich ein Überdruckventil 21 an, welches wiederum Verbindung zu einem Pufferspeicher 22 hat. An den Pufferspeicher 22 schließt sich ein Absperrventil 23 an, das dazu dient, bei nicht betriebener Brennkraftmaschine eine Förderung von gasförmigem Kraftstoff 1 in Richtung des Brennraums der Brennkraftmaschine zu verhindern. Von dem Pufferspeicher 23 führt eine Zuführleitung 24 zu einem Gasventil 30, das beispielhaft im Bereich eines Saugrohrs 3 der Brennkraftmaschine angeordnet ist und dazu dient, den gasförmigen Kraftstoff 1 im Bereich des Saugrohrs 3 einzublasen. Von dort gelangt der Kraftstoff bei entsprechend geöffnetem Einlassventil in den Bereich eines Brennraums der nicht dargestellten Brennkraftmaschine. Die Ansteuerung des Gasventils 30 erfolgt über eine Steuereinrichtung 50, der weitere Evaporator 20 is followed by a pressure relief valve 21, which in turn has a connection to a buffer memory 22. At the buffer memory 22, a shut-off valve 23 connects, which serves to prevent a non-operated internal combustion engine, a promotion of gaseous fuel 1 in the direction of the combustion chamber of the internal combustion engine. From the buffer memory 23, a supply line 24 leads to a gas valve 30, which is arranged by way of example in the region of a suction pipe 3 of the internal combustion engine and serves to inject the gaseous fuel 1 in the region of the suction pipe 3. From there, the fuel reaches the area of a combustion chamber of the internal combustion engine, not shown, with the inlet valve correspondingly open. The control of the gas valve 30 via a control device 50, the other
Eingangsgrößen zur Ansteuerung des Gasventils 30 als Eingangswerte zugeführt werden, insbesondere ein Lastwunsch sowie andere Parameter. Input variables for controlling the gas valve 30 are supplied as input values, in particular a desired load and other parameters.
Vorzugsweise innerhalb des Innentanks 12 ist eine als Druckregelventil wirkende Einrichtung 40 zur Einspeisung der gasförmigen Phase des Kraftstoffs 1 in die Entnahmeleitung 16 angeordnet. Insbesondere ist die Einrichtung 40 oberhalb des Füllpegels 2 in dem Innentank 12 angeordnet und weist eine Einspeiseleitung 41 auf, die außerhalb des Kraftstofftanks 10 in der Preferably, within the inner tank 12, a device 40 acting as a pressure regulating valve is provided for feeding in the gaseous phase of the fuel 1 into the withdrawal line 16. In particular, the device 40 is arranged above the fill level 2 in the inner tank 12 and has a Infeed line 41, which outside of the fuel tank 10 in the
Entnahmeleitung 16 vor der Verdampfereinrichtung 20 in der Entnahmeleitung 16 mündet. Zwischen der Einspeisestelle 42 der Einspeiseleitung 41 in die Extraction line 16 in front of the evaporator device 20 in the extraction line 16 opens. Between the feed point 42 of the feed line 41 in the
Entnahmeleitung 16 und der Verdampfereinheit 20 ist darüber hinaus ein Drucksensor 45 angeordnet, der zur Erfassung des in der Entnahmeleitung 16 herrschenden Drucks dient, und der diesen Druck der Steuereinrichtung 50 als Eingangsgröße zuführt. Extraction line 16 and the evaporator unit 20, a pressure sensor 45 is also arranged, which serves for detecting the pressure prevailing in the extraction line 16 pressure, and which supplies this pressure to the control device 50 as an input variable.
In der Fig. 2 ist die Kennlinie K der Öffnungsstellung Q der Einrichtung 40 über dem Druck p im Innentank 12 dargestellt. Hierbei ist beispielhaft erkennbar, dass bist zu einem Druck p von 5bar in dem Innentank 12 die Einrichtung 40 vollständig geschlossen ist, d.h. die Öffnungsstellung 0% beträgt. Das bedeutet, dass bis zu einem Druck p von 5bar aus dem Innentank 12 ausschließlich Kraftstoff 1 in flüssiger Form, d.h. unterhalb des Füllpegels 2, entnommen wird. Ab einem Druck p von beispielhaft 10bar ist demgegenüber die maximale Öffnungsstellung Q der Einrichtung 40 von 100% erreicht, ab dem ausschließlich Kraftstoff 1 oberhalb des Füllpegels 2 aus dem Innentank 12 entnommen wird. Es wird somit ab einem Druck p von 10bar schließlich die gasförmige Phase des Kraftstoffs 1 der Verdampfereinheit 20 zugeführt. Bei einem Druck p von 7,5bar - unter der Voraussetzung, dass die Kennlinie K linear verläuft - wird hingegen 50% des Kraftstoffs 1 unterhalb des Füllpegels 2, d.h. in flüssiger Form, und 50% des Kraftstoffs 1 oberhalb des Füllpegels 2, d.h. in gasförmigem Zustand, der Verdampfereinheit 20 zugeführt. FIG. 2 shows the characteristic K of the open position Q of the device 40 above the pressure p in the inner tank 12. By way of example, it will be appreciated that to a pressure p of 5bar in the inner tank 12, the device 40 is fully closed, i. the opening position is 0%. This means that, up to a pressure p of 5 bar from the inner tank 12, only fuel 1 in liquid form, i. below the filling level 2, is taken. By contrast, starting at a pressure p of, for example, 10 bar, the maximum open position Q of the device 40 is 100%, from which only fuel 1 above the fill level 2 is removed from the inner tank 12. Thus, starting at a pressure p of 10 bar, the gaseous phase of the fuel 1 is finally fed to the evaporator unit 20. At a pressure p of 7.5 bar, on the assumption that the characteristic curve K is linear, on the other hand, 50% of the fuel 1 will be below the filling level 2, i. in liquid form, and 50% of the fuel 1 above the fill level 2, i. in a gaseous state, the evaporator unit 20 is supplied.
Die Steuereinrichtung 50 weist einen Algorithmus oder ein Kennfeld auf, das eine Verbindung zwischen dem von dem Drucksensor 45 erfassten Druck p in der Entnahmeleitung 16 und der Zusammensetzung der Bestandteile des Kraftstoffs 1 ermöglicht. Unter einer Zusammensetzung soll dabei eine prozentuale The control device 50 has an algorithm or a map which allows a connection between the pressure p detected in the extraction line 16 by the pressure sensor 45 and the composition of the constituents of the fuel 1. Under a composition should be a percentage
Zusammensetzung hinsichtlich niederverflüchtender und höherverflüchtender Bestandteile des Kraftstoffs 1 verstanden sein. In Kenntnis der Composition with regard to volatile and volatile constituents of the fuel 1 to be understood. In knowledge of
Zusammensetzung des Kraftstoffs 1 , der der Verdampfereinrichtung 20 und somit auch dem Gasventils 30 zugeführt wird, berechnet die Steuereinrichtung 50 einen Vorsteuerwert V, der dazu verwendet wird, die Ansteuerung des Gasventils 30 anzupassen. Weiterhin wird mittels einer nicht dargestellten Abgas- bzw. Lambdasonde die tatsächliche Abgasqualität bzw. Composition of the fuel 1, which is the evaporator means 20 and thus also supplied to the gas valve 30, the controller 50 calculates a pilot value V, which is used to adjust the control of the gas valve 30. Furthermore, by means of an exhaust gas or lambda probe, not shown, the actual exhaust gas quality or
Abgaszusammensetzung erfasst. Kennt man diese Zusammensetzung bei beispielsweise zwei erfassten Drücken p von 5bar und 15bar, kann bei dazwischenliegenden Drücken durch Extrapolation den zunächst vorgesehenen Vorsteuerwert V weiter optimieren bzw. anpassen. Das soweit beschriebene Kraftstoffversorgungssystem 100 kann in vielfältiger Art und Weise abgewandelt bzw. modifiziert werden, ohne vom Erfindungsgedanken abzuweichen. Exhaust gas composition detected. Is this composition known? For example, two detected pressures p of 5bar and 15bar, at additional pressures by extrapolation can further optimize or adjust the initially provided precontrol value V. The fuel supply system 100 described so far can be modified or modified in many ways without departing from the spirit of the invention.

Claims

Kraftstoffversorgungssystem (100) für eine gasbetriebene Fuel supply system (100) for a gas-powered
Brennkraftmaschine, mit wenigstens einem Gasventil (30), das von einer Steuereinrichtung (50) zum zumindest mittelbaren Einblasen von Gas in einen Brennraum der Brennkraftmaschine ansteuerbar ist, mit einem Kraftstofftank (10) zur Speicherung von kryogenem Kraftstoff (1), mit einer mit dem Kraftstofftank (10) über eine Entnahmeleitung (16) verbundenen Verdampfereinrichtung (20) für den Kraftstoff (1), und mit einer Einrichtung (40) zur Einspeisung einer gasförmigen Phase des Kraftstoffs (1) aus dem Kraftstofftank (10) in die Entnahmeleitung (16), wobei Menge des von der Einrichtung (40) eingespeisten gasförmigen Kraftstoffs (1) in Abhängigkeit von dem im Kraftstofftank herrschenden Druck (p) erfolgt, dadurch gekennzeichnet, dass ein Drucksensor (45) vorgesehen ist, der dazu ausgebildet ist, den Druck (p) des aus der flüssigen und der gasförmigen Phase bestehenden Kraftstoffs (1) zu erfassen, und dass die Steuereinrichtung (50) dazu ausgebildet ist, die Ansteuerung des wenigstens einen Gasventils (30) in Abhängigkeit von dem von dem Drucksensor (45) erfassten Drucks (p) vorzunehmen. Internal combustion engine, with at least one gas valve (30), which is controllable by a control device (50) for at least indirectly blowing gas into a combustion chamber of the internal combustion engine, with a fuel tank (10) for storing cryogenic fuel (1), with a with the Fuel tank (10) via a withdrawal line (16) connected evaporator means (20) for the fuel (1), and with means (40) for feeding a gaseous phase of the fuel (1) from the fuel tank (10) into the withdrawal line (16 in which quantity of the gaseous fuel (1) fed in by the device (40) is effected as a function of the pressure (p) prevailing in the fuel tank, characterized in that a pressure sensor (45) is provided which is designed to reduce the pressure ( p) of the liquid and the gaseous phase fuel (1) to detect, and that the control device (50) is adapted to control the at least a gas valve (30) in response to the of the pressure sensor (45) detected pressure (p) make.
Kraftstoffversorgungssystem nach Anspruch 1 , Fuel supply system according to claim 1,
dadurch gekennzeichnet, characterized,
dass der Drucksensor (45) in der Entnahmeleitung (16) nach einer Einspeisestelle (42) der gasförmigen Phase in die Entnahmeleitung (16) oder nach der Verdampfereinrichtung (20) angeordnet ist. the pressure sensor (45) is arranged in the extraction line (16) downstream of a feed point (42) of the gaseous phase into the extraction line (16) or downstream of the evaporator device (20).
Kraftstoffversorgungssystem nach Anspruch 1 oder 2, Fuel supply system according to claim 1 or 2,
dadurch gekennzeichnet, characterized,
dass die Förderung des Kraftstoffs (1) in Richtung der that the promotion of the fuel (1) in the direction of
Verdampfereinrichtung (20) ausschließlich aufgrund des Drucks (p) des Kraftstoffs (1) im Kraftstofftank (10) erfolgt. Kraftstoffversorgungssystem nach einem der Ansprüche 1 bis 3, Evaporator (20) exclusively due to the pressure (p) of the fuel (1) in the fuel tank (10). Fuel supply system according to one of claims 1 to 3,
dadurch gekennzeichnet, characterized,
dass das Gasventil (30) im Bereich eines Saugrohrs (3) der that the gas valve (30) in the region of a suction pipe (3) of the
Brennkraftmaschine angeordnet ist. Internal combustion engine is arranged.
Kraftstoffversorgungssystem nach einem der Ansprüche 1 bis 4, Fuel supply system according to one of claims 1 to 4,
dadurch gekennzeichnet, characterized,
das die Einrichtung (40) zur Einspeisung einer gasförmigen Phase des the means (40) for feeding a gaseous phase of
Kraftstoffs (1) aus dem Kraftstofftank (10) in die Einspeiseleitung (16) Fuel (1) from the fuel tank (10) into the feed line (16)
gleichzeitig als Überdruckventil zur Begrenzung des Drucks (p) in dem at the same time as a pressure relief valve to limit the pressure (p) in the
Kraftstofftank (10) ausgebildet ist. Fuel tank (10) is formed.
Verfahren zum Betreiben eines Kraftstoffversorgungssystems (100), das insbesondere nach einem der Ansprüche 1 bis 5 ausgebildet ist, wobei in Abhängigkeit des in einem Kraftstofftank (10) zur Speicherung von kryogenem Kraftstoff (1) herrschenden Drucks (p) mittels einer Einrichtung (40) zur Method for operating a fuel supply system (100), which is designed in particular according to one of claims 1 to 5, wherein, depending on the pressure (p) prevailing in a fuel tank (10) for storing cryogenic fuel (1), by means (40). to
Einspeisung einer gasförmigen Phase des Kraftstoffs (1) aus dem Kraftstofftank (10) in eine Entnahmeleitung (16) eine Menge an gasförmigem Kraftstoff (1) in die flüssige Phase des Kraftstoffs (1) eingespeist wird, dadurch gekennzeichnet, dass der Druck (p) des aus der gasförmigen und der flüssigen Phase Feeding of a gaseous phase of the fuel (1) from the fuel tank (10) into a withdrawal line (16) an amount of gaseous fuel (1) in the liquid phase of the fuel (1) is fed, characterized in that the pressure (p) of the gaseous and the liquid phase
bestehenden Kraftstoffs (1) mittels eines Drucksensors (45) erfasst und einerexisting fuel (1) detected by a pressure sensor (45) and a
Steuereinrichtung (50) zur Ansteuerung wenigstens eines Gasventils (50) als Eingangswert zugeführt wird, dass die Steuereinrichtung (50) aufgrund des Drucks (p) auf ein Mischungsverhältnis der gasförmigen und der flüssigen Phase des Kraftstoffs (1) schließt und daraus einen Vorsteuerwert (V) generiert, und dass die Ansteuerung des wenigstens einen Gasventils (30) aufgrund des Vorsteuerwerts (V) erfolgt. Control means (50) for controlling at least one gas valve (50) is supplied as an input value that the control means (50) due to the pressure (p) to a mixing ratio of the gaseous and the liquid phase of the fuel (1) closes and from a pilot control value (V ), and that the control of the at least one gas valve (30) takes place on the basis of the pilot control value (V).
EP17711625.8A 2016-05-12 2017-03-15 Fuel supply system for a gas-operated internal combustion engine and method for operating a fuel supply system Withdrawn EP3455484A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016208166.7A DE102016208166A1 (en) 2016-05-12 2016-05-12 A fuel supply system for a gas powered internal combustion engine and method for operating a fuel supply system
PCT/EP2017/056138 WO2017194227A1 (en) 2016-05-12 2017-03-15 Fuel supply system for a gas-operated internal combustion engine and method for operating a fuel supply system

Publications (1)

Publication Number Publication Date
EP3455484A1 true EP3455484A1 (en) 2019-03-20

Family

ID=58358590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17711625.8A Withdrawn EP3455484A1 (en) 2016-05-12 2017-03-15 Fuel supply system for a gas-operated internal combustion engine and method for operating a fuel supply system

Country Status (4)

Country Link
EP (1) EP3455484A1 (en)
CN (1) CN109154256B (en)
DE (1) DE102016208166A1 (en)
WO (1) WO2017194227A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017219157A1 (en) * 2017-10-25 2019-04-25 Robert Bosch Gmbh A method of operating an internal combustion engine with natural gas, fuel supply system for an internal combustion engine operable with natural gas
DE102018203210A1 (en) * 2018-03-05 2019-09-05 Robert Bosch Gmbh Method and device for operating an internal combustion engine
DE102019201177A1 (en) * 2019-01-30 2020-07-30 Robert Bosch Gmbh Method for operating a fuel system and control unit
IT202000003377A1 (en) * 2020-02-19 2021-08-19 Graf Ind S P A FUEL SYSTEM FOR LIQUEFIED NATURAL GAS VEHICLES

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1211435A1 (en) * 1984-07-16 1986-02-15 Центральный Ордена Трудового Красного Знамени Научно-Исследовательский Автомобильный И Автомоторный Институт System of feeding liquified gas into internal combustion engine
JPS61268856A (en) * 1985-05-22 1986-11-28 Nippon Carbureter Co Ltd Liquefied-gas controller
US5421161A (en) * 1993-09-27 1995-06-06 Minnesota Valley Engineering, Inc. Storage system for cryogenic fluids
JP2002071095A (en) * 2000-08-29 2002-03-08 Yazaki Corp Liquefied gas feeder
KR101405582B1 (en) * 2008-09-09 2014-06-10 현대자동차주식회사 Fuel supplying device for liquefied natural gas vehicle
CA2653643C (en) * 2009-02-26 2010-08-31 Westport Power Inc. Pressure control system and method
US8459241B2 (en) * 2009-12-17 2013-06-11 Northstar, Inc. Liquefied natural gas system for a natural gas vehicle
KR101105839B1 (en) * 2010-01-08 2012-01-13 코아텍주식회사 A Gas Supply Equipment with vaporizer
JP6026648B2 (en) * 2012-05-16 2016-11-16 テーゲーエー、マリン、ガス、エンジニヤリング、ゲーエムベーハー Gas supply device
CN103712056B (en) * 2012-10-02 2017-11-14 查特股份有限公司 Cryogenic liquid conveying and pressure charging system and method with active boosting capability
CA2796794C (en) * 2012-11-23 2015-06-16 Westport Power Inc. Method and system for delivering a gaseous fuel into the air intake system of an internal combustion engine
JP5837869B2 (en) * 2012-12-06 2015-12-24 株式会社フジキン Raw material vaporizer
US9279541B2 (en) * 2013-04-22 2016-03-08 Air Products And Chemicals, Inc. Method and system for temperature-controlled gas dispensing
CN204403779U (en) * 2014-12-25 2015-06-17 十堰厚发汽车零部件有限公司 A kind of can the LNG mounted gas cylinder system of Automatic-boosting
US10400712B2 (en) * 2015-04-30 2019-09-03 Westport Power Inc. Intelligent pressure management system for cryogenic fluid systems

Also Published As

Publication number Publication date
DE102016208166A1 (en) 2017-11-16
CN109154256B (en) 2023-12-08
WO2017194227A1 (en) 2017-11-16
CN109154256A (en) 2019-01-04

Similar Documents

Publication Publication Date Title
WO2017194227A1 (en) Fuel supply system for a gas-operated internal combustion engine and method for operating a fuel supply system
EP3029301B1 (en) Method and a system for operating at least one functional unit of a motor vehicle
EP2459922B1 (en) Combustion-gas system, in particular for cargo vessels
EP2909524B1 (en) Method for filling a fuel storage system of a motor vehicle
DE112015004382T5 (en) Hydrogen fuel supply system
EP3292297A1 (en) Water injection device of an internal combustion engine
EP3084202B1 (en) Dual-fuel fuel injector
DE19957742A1 (en) Fuel supply device for an internal combustion engine
EP3633177B1 (en) Combustion engine and method for operating a combustion engine
DE102017210630A1 (en) A fuel supply device for a direct injection gasoline engine and start-up control method for a direct injection gasoline engine with the fuel supply device
DE102012111262A1 (en) LPI fuel system and return fuel minimization process
WO2017148604A1 (en) Method for cooling a first cryogenic pressure vessel
DE102013205452A1 (en) Arrangement for determining a vaporization of fuel in fuel supply system in motor car, has pressure-temperature sensor to determine vaporization of fuel based on pressure and temperature of fuel, in locked state of isolatable portion
WO2016120154A1 (en) Method for starting an internal combustion engine
DE102017222080A1 (en) Method for issuing a refueling approval of a motor vehicle and motor vehicle
DE102015214563B3 (en) Power generating assembly, vehicle having a power generating assembly and method for adjusting an inert gas pressure
DE102012218856A1 (en) Fuel storage system for motor vehicle, has auxiliary storage downstream check valve in supply line, which is closed during filling process of mail tank, and is attached toe supply line in such way that consumer is operated by fuel
WO2019115167A1 (en) Fuel delivery device for an internal combustion engine
WO2017174309A1 (en) Pressure control system for a gas-operated internal combustion engine and use of the pressure control system
DE102019201703A1 (en) Method for operating a fuel system, control unit and fuel system
WO2021069412A1 (en) Method for refuelling a motor vehicle, motor vehicle, filling station and computer-readable storage medium
DE102019201177A1 (en) Method for operating a fuel system and control unit
EP3707433A1 (en) Method for controlling a combustion-gas operated heating device
DE4427710A1 (en) Extn. of gas from cryogenic storage vessels with min. relief to the atmosphere
DE102017105251A1 (en) Gas supply, internal combustion engine and method for switching off a gas-powered internal combustion engine

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181212

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190702