WO2008119588A1 - Procédé de diagnostic d'une soupape d'arrêt - Google Patents

Procédé de diagnostic d'une soupape d'arrêt Download PDF

Info

Publication number
WO2008119588A1
WO2008119588A1 PCT/EP2008/051707 EP2008051707W WO2008119588A1 WO 2008119588 A1 WO2008119588 A1 WO 2008119588A1 EP 2008051707 W EP2008051707 W EP 2008051707W WO 2008119588 A1 WO2008119588 A1 WO 2008119588A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
shut
fuel
pressure
expected
Prior art date
Application number
PCT/EP2008/051707
Other languages
German (de)
English (en)
Inventor
Juergen Foerster
Winfried Langer
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to JP2010500167A priority Critical patent/JP2010521625A/ja
Priority to BRPI0808027-5A2A priority patent/BRPI0808027A2/pt
Priority to EP08708931A priority patent/EP2132473A1/fr
Publication of WO2008119588A1 publication Critical patent/WO2008119588A1/fr

Links

Classifications

    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • 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
    • F02D19/025—Failure diagnosis or prevention; Safety measures; Testing
    • 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
    • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
    • 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
    • F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
    • 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
    • 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
    • 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
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to a method for diagnosing a shut-off valve in a fuel line according to the preamble of the independent claim and a fuel supply system.
  • Compressed gas (CNG) systems typically include a series connection of a tank shut-off valve, a pressure regulator shut-off valve, a pressure regulator module, and a low-pressure relief valve.
  • the pressure regulator module itself also has a valve function which shuts off the low-pressure region from the high-pressure region if the pressures are too high in order to prevent the injection valves or injection valves from reliably opening when the pressures are too high.
  • a CNG system is known by way of example in which fuel is stored under pressure in a tank and conducted via a fuel line to injection valves. After switching off the internal combustion engine and closing the tank valves, it is provided to check the fuel pressure in the fuel line, with an external leakage - ie a leak of the
  • Fuel system out to the environment - is detected when the fuel pressure drops faster than expected.
  • the inventive method with the features of the independent method claim has the advantage that a shut-off valve, which is arranged in a fuel line between at least one tank and at least one injection valve, in a few steps with typically already existing sensors or measuring means on its shut-off - ie internal leakage - can be checked.
  • the shut-off valve is closed and monitored the fuel pressure downstream of the closed shut-off valve, wherein further fuel is admitted via a blow-in valve for operating an internal combustion engine in a combustion chamber.
  • a downstream of the shut-off valve expected fuel pressure is determined, the shut-off of the valve is not recognized as sufficient if the fuel pressure downstream of the shut-off valve from the expected fuel pressure deviates or does not decrease as expected.
  • a fuel supply system having the features of the independent apparatus claim is equally advantageous.
  • a control device with an adjusting means and a monitoring means is provided, wherein the control device and the device means are arranged for carrying out the method according to the invention.
  • the shut-off is also recognized as insufficient if the fuel pressure downstream of the shut-off valve exceeds the expected fuel pressure and / or the fuel pressure deviates from an expected pressure profile.
  • a fuel mass in the system can be determined from the pressure and the temperature, and the shut-off effect of the valve can be recognized as insufficient if the fuel mass in the fuel line downstream of the shut-off valve does not fall below an expected fuel mass.
  • FIG. 1 An example of a fuel supply system according to the invention is shown in FIG.
  • FIG. 1 shows schematically a fuel supply system for the operation of an internal combustion engine with LPG or compressed gas, for example o- the hydrogen or natural gas.
  • the fuel is stored under pressure in a first and second tank 100, 110.
  • a first and second tank pressure sensor 200, 210 Of the Pressure of the fuel in the first and second tanks 100, 110, and thus indirectly also the fuel level, is monitored in each case via a first and second tank pressure sensor 200, 210.
  • the two tanks 100, 110 are connected to a common fuel line 50, which leads the fuel to a pressure control valve 300 and downstream of the pressure control valve 300 to four injection valves 700.
  • a Tankabsperrventil 500, 510 is arranged in each case.
  • a shut-off valve 400 is provided and between the pressure regulator 300 and the shut-off valve 400, a third pressure sensor 220 and between the pressure regulator 300 and the injection valves 700, a fourth pressure sensor 230.
  • a filler neck 600 is arranged at one end of the common fuel line 50 ,
  • hydrogen is stored in the two tanks 100, 110 under a pressure of up to 300 bar.
  • the Tankabsperrventile 500, 510 and the check valve 400 in the fuel line 50 are open.
  • the tank pressure of, for example, ⁇ 300 bar is measured via the third pressure sensor 220.
  • the pressure regulator 300 reduces the applied pressure, so that downstream of the pressure regulator 300, for example, a pressure of 2 to 6 bar is applied in the fuel line. With this low pressure, the fuel is then blown into the combustion chamber of an internal combustion engine, not shown, via the injection valves 700.
  • shut-off valves 500, 510, 400 In the event of a malfunction or under special operating conditions, it is planned to close the shut-off valves 500, 510, 400. For example, if there is a leakage of the injection valves 700 or the fuel line, so escape of the fuel is avoided in the environment. Due to the high safety relevance of the shut-off valves, it is desirable to check the shut-off effect of the shut-off valves routinely.
  • shut-off valve 400 To check the shut-off or the tightness of a shut-off valve, it is provided according to the invention to close the shut-off valve 400 and to monitor the fuel pressure downstream of the shut-off valve 400, wherein the injection valve 700 is further actuated to operate the internal combustion engine.
  • a fuel mass can be determined, which flows into the combustion chamber.
  • the injected fuel mass reduces the fuel mass in the fuel line and leads, in a closed and tight-fitting shut-off valve 400, to a pressure reduction in the fuel line. If the pressure reduction does not occur in the expected manner, it can be assumed that fuel will flow into the fuel line via the shut-off valve.
  • Each injection process also reduces the expected fuel pressure in the fuel line downstream of the closed shut-off valve. As the number of injections increases, the differential pressure between the upstream and downstream sides of the shut-off valve thus increases.
  • a threshold above the expected fuel pressure at which the blocking effect of the shut-off valve 400 is still tolerated as sufficient.
  • the threshold value has to be tracked in accordance with the fuel mass flowing out via the injection valve.
  • the pressure downstream of the closed shut-off valve 400 to be tested is lowered by blowing out the fuel via the injection valves 700 to a pressure below the pressure control threshold. If the pressure control threshold of the pressure regulator 300 is, for example, 6 bar, the pressure would be below 6 bar, for example 2 bar. Under these conditions, the pressure regulator 300 is fully open and the
  • Pressure sensor 230 thus measures the pressure directly on the downstream side of the shut-off valve 400.
  • This procedure has the advantage that, on the one hand, the differential pressure at the shut-off valve 400 becomes as large as possible and, on the other hand, the fourth pressure sensor 230 reacts more sensitively in the low-pressure region than through the smaller measuring range the third pressure sensor 220 in the high pressure Area. The accuracy and reliability of the measurement thus increases.
  • an additional calculation of the mass increase in the observed volume can be carried out by an additional temperature detection.
  • the temperature can be measured with a temperature sensor at the observed volume or a tank temperature sensor.
  • a fuel supply system can be dispensed with a first and second pressure sensor 200, 210 and the fuel pressure in other ways or for example via the third pressure sensor 220 can be determined.
  • the method according to the invention is furthermore not limited to the diagnosis of a shut-off valve 400.
  • the two tank valves 500, 510 can be examined for their shut-off.
  • a pressure threshold is expediently provided below which the diagnosis is not carried out, or a load threshold above which the diagnosis is not carried out.
  • the shut-off valve is closed until the fuel pressure downstream of the shut-off valve has noticeably dropped. This allows the further operation of the internal combustion engine as well as the implementation of the diagnosis.
  • the injected fuel mass is accumulated and compared to a maximum value defined for that shut-off valve at which a pressure drop is detectable.
  • the defined permissible maximum value of the accumulated injected fuel mass can be determined, for example, in advance and, if necessary, stored in maps for retrieval. If the stored permissible maximum value is exceeded, the shut-off valve is detected as faulty.
  • a suitable maximum permissible opening time of the shut-off valve can also be stored. Furthermore, it is also possible to provide a second pressure threshold, from which the shut-off valve is closed again. It is also conceivable to operate the shut-off valve periodically.
  • the shut-off effect is only recognized as insufficient if this has been established in several diagnoses.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

La présente invention concerne un procédé de diagnostic d'une soupape d'arrêt (400, 500, 510) dans une conduite de carburant (50). Ladite soupape d'arrêt est placée dans la conduite de carburant, entre au moins un réservoir et au moins une soupape d'injection (70). Afin d'effectuer le diagnostic, la soupape d'arrêt est fermée et du carburant conçu pour faire fonctionner un moteur à combustion interne est prélevé par une soupape d'injection. L'effet de blocage de la soupape d'arrêt est identifié comme n'étant pas suffisant lorsque la pression dans la conduite de carburant ne chute pas de manière escomptée.
PCT/EP2008/051707 2007-03-30 2008-02-13 Procédé de diagnostic d'une soupape d'arrêt WO2008119588A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2010500167A JP2010521625A (ja) 2007-03-30 2008-02-13 遮断弁の診断方法
BRPI0808027-5A2A BRPI0808027A2 (pt) 2007-03-30 2008-02-13 Processo para diagnose de uma válvula de bloqueio
EP08708931A EP2132473A1 (fr) 2007-03-30 2008-02-13 Procédé de diagnostic d'une soupape d'arrêt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007015783.7 2007-03-30
DE102007015783A DE102007015783A1 (de) 2007-03-30 2007-03-30 Verfahren zur Diagnose eines Absperrventils

Publications (1)

Publication Number Publication Date
WO2008119588A1 true WO2008119588A1 (fr) 2008-10-09

Family

ID=39362501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/051707 WO2008119588A1 (fr) 2007-03-30 2008-02-13 Procédé de diagnostic d'une soupape d'arrêt

Country Status (8)

Country Link
EP (1) EP2132473A1 (fr)
JP (1) JP2010521625A (fr)
KR (1) KR20100014658A (fr)
CN (1) CN101646892A (fr)
BR (1) BRPI0808027A2 (fr)
DE (1) DE102007015783A1 (fr)
RU (1) RU2009139911A (fr)
WO (1) WO2008119588A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018033295A1 (fr) * 2016-08-17 2018-02-22 Bayerische Motoren Werke Aktiengesellschaft Procédé pour faire fonctionner une soupape d'un système de récipient sous pression et système de récipient sous pression
WO2023285571A1 (fr) * 2021-07-14 2023-01-19 ComAp a.s. Injection de carburant à points multiples dans des moteurs à combustion tri-carburant
WO2023285572A1 (fr) * 2021-07-14 2023-01-19 ComAp a.s. Injection de carburant à point unique dans des moteurs à combustion polycarburants
WO2023016742A1 (fr) * 2021-08-09 2023-02-16 ComAp a.s. Injection de carburant à points multiples dans des moteurs à combustion bi-carburant

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5518537B2 (ja) * 2010-03-18 2014-06-11 株式会社ケーヒン 遮断弁故障診断装置
JP2013104343A (ja) * 2011-11-14 2013-05-30 Toyota Motor Corp 燃料遮断弁診断装置
JP2014118844A (ja) * 2012-12-13 2014-06-30 Denso Corp 内燃機関の燃料噴射制御装置
DE102014211880A1 (de) 2014-06-20 2015-12-24 Robert Bosch Gmbh Kraftstoffzuführungssystem und Verfahren zum Lokalisieren eines Lecks in einem Kraftstoffzuführungssystem
DE102015215490A1 (de) * 2015-08-13 2017-02-16 Continental Automotive Gmbh Verfahren zum Betreiben einer Vorrichtung zur Kraftstoffversorgung, Vorrichtung zur Kraftstoffversorgung und Computerprogrammprodukt
DE102016207743A1 (de) * 2016-05-04 2017-11-09 Robert Bosch Gmbh Einrichtung zur Zumessung eines gasförmigen Brennstoffs zu einem Injektor
SE540146C2 (en) * 2016-06-21 2018-04-10 Scania Cv Ab Method for determining the proper operation of a valve in a gas tank system
CN107165731B (zh) * 2017-07-21 2019-06-07 中国第一汽车股份有限公司 天然气发动机减压器截止阀内漏的检测方法
DE102020203888B4 (de) 2020-03-25 2021-10-14 Mtu Friedrichshafen Gmbh Brennkraftmaschine mit wenigstens einem Brennraum und Verfahren zum Betreiben einer Brennkraftmaschine
DE102020207253A1 (de) * 2020-06-10 2021-12-16 Argo Gmbh Ventileinrichtung, Intankventil und Gasdruckspeichersystem, insbesondere für Brennstoffzellensysteme, sowie Verfahren zum Detektieren einer Leckage
CN112302793B (zh) * 2020-10-29 2021-08-20 潍柴动力股份有限公司 截止阀关闭检测方法、装置、电子控制单元以及存储介质
WO2024056212A1 (fr) * 2022-09-15 2024-03-21 Robert Bosch Gmbh Procédé de détection d'un dysfonctionnement, système de réservoir, produit-programme informatique et moyen de stockage
DE102022209697A1 (de) * 2022-09-15 2024-03-21 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und System zum Detektieren einer Fehlfunktion in einem Brennstoffzellensystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19727794C1 (de) * 1997-06-30 1999-01-28 Siemens Ag Verfahren zum Überprüfen einer Kraftstoffversorgung
US6125869A (en) * 1998-01-19 2000-10-03 Smc Kabushiki Kaisha Self-diagnosis method for mass flow controller
EP1243772A2 (fr) * 2001-03-23 2002-09-25 C.R.F. Società Consortile per Azioni Système de diagnose pour des fuites des systèmes de refoulement à gaz et procédé d'inspection des soupapes de ces systèmes
US6467466B1 (en) * 1999-07-30 2002-10-22 Fujitsu Ten Limited Gas leakage detection and fail-safe control method for gas-fueled internal combustion engine and apparatus for implementing the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3708471A1 (de) * 1987-03-16 1988-09-29 Kromschroeder Ag G Verfahren und vorrichtung zur dichtheitskontrolle von zwei hintereinander in einer fluidleitung angeordneten ventilen
JP2001234814A (ja) * 2000-02-24 2001-08-31 Denso Corp ガス燃料供給装置の異常検出装置
JP3949348B2 (ja) 2000-04-20 2007-07-25 本田技研工業株式会社 ガス燃料供給装置
DE102004005027A1 (de) * 2004-01-30 2005-08-18 Siemens Building Technologies Ag Verfahren zur Dichtheitsprüfung einer Gasversorgungsstrecke
DE102005048456A1 (de) 2005-10-07 2007-04-12 Robert Bosch Gmbh Verfahren zur Diagnose eines Absperrventils

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19727794C1 (de) * 1997-06-30 1999-01-28 Siemens Ag Verfahren zum Überprüfen einer Kraftstoffversorgung
US6125869A (en) * 1998-01-19 2000-10-03 Smc Kabushiki Kaisha Self-diagnosis method for mass flow controller
US6467466B1 (en) * 1999-07-30 2002-10-22 Fujitsu Ten Limited Gas leakage detection and fail-safe control method for gas-fueled internal combustion engine and apparatus for implementing the same
EP1243772A2 (fr) * 2001-03-23 2002-09-25 C.R.F. Società Consortile per Azioni Système de diagnose pour des fuites des systèmes de refoulement à gaz et procédé d'inspection des soupapes de ces systèmes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018033295A1 (fr) * 2016-08-17 2018-02-22 Bayerische Motoren Werke Aktiengesellschaft Procédé pour faire fonctionner une soupape d'un système de récipient sous pression et système de récipient sous pression
US11372430B2 (en) 2016-08-17 2022-06-28 Bayerische Motoren Werke Aktiengesellschaft Method for operating a valve of a pressure vessel system, and pressure vessel system
WO2023285571A1 (fr) * 2021-07-14 2023-01-19 ComAp a.s. Injection de carburant à points multiples dans des moteurs à combustion tri-carburant
WO2023285572A1 (fr) * 2021-07-14 2023-01-19 ComAp a.s. Injection de carburant à point unique dans des moteurs à combustion polycarburants
WO2023016742A1 (fr) * 2021-08-09 2023-02-16 ComAp a.s. Injection de carburant à points multiples dans des moteurs à combustion bi-carburant

Also Published As

Publication number Publication date
EP2132473A1 (fr) 2009-12-16
JP2010521625A (ja) 2010-06-24
CN101646892A (zh) 2010-02-10
KR20100014658A (ko) 2010-02-10
RU2009139911A (ru) 2011-05-10
BRPI0808027A2 (pt) 2014-06-17
DE102007015783A1 (de) 2008-10-02

Similar Documents

Publication Publication Date Title
WO2008119588A1 (fr) Procédé de diagnostic d'une soupape d'arrêt
DE112010005532B4 (de) Brennstoffleckage-Erfassungssystem und Erfassungsverfahren
DE102012206810B4 (de) System und verfahren zum diagnostizieren eines ventillecks in einem fahrzeug
EP1781934B1 (fr) Procede pour diagnostiquer un systeme d'alimentation en carburant d'un moteur a combustion interne
EP0819213B1 (fr) Detecteur de fuite dans un systeme d'alimentation en carburant
DE102012005692B4 (de) Verfahren und Anordnung zum Überprüfen einer Dichtheit eines Brennstoffzellensystems
DE19527367C2 (de) Verfahren und Vorrichtung zum Diagnostizieren einer Leckage in einem System zur Wiedergewinnung von Kraftstoff
WO2007042388A1 (fr) Procede de diagnostic d'une soupape d'arret
DE112012005026B4 (de) Verfahren zum Ermitteln einer Leckage in einem Dampfmanagementsystem eines Kraftstoffsystems eines Kraftfahrzeugs sowie Dampfmanagementsysteme für ein Kraftfahrzeug mit Mitteln zum Ermitteln von Leckagen
WO2017089015A1 (fr) Surveillance de fuites dans un système de pile à combustible
DE102007002752A1 (de) Verfahren zum Überwachen einer Brennstoffversorgungsanlage eines Fahrzeuges
DE102020112830A1 (de) Steuereinheit und Verfahren zum Betrieb eines Druckbehälter-Ventils eines Druckbehälters
DE102020113995A1 (de) Steuereinheit und Verfahren zur Einstellung des Drucks in der Entnahmeleitung eines Druckbehälters
DE4216067A1 (de) Verfahren und Vorrichtung zur Tankentlüftungs-Diagnose bei einem Kraftfahrzeug
DE102020123039A1 (de) Verfahren zur Überwachung eines Druckbehältersystems, Druckbehältersystem und Kraftfahrzeug
DE102014211880A1 (de) Kraftstoffzuführungssystem und Verfahren zum Lokalisieren eines Lecks in einem Kraftstoffzuführungssystem
DE102007039564A1 (de) Verfahren und Vorrichtung zur Diagnose eines Abscheidermoduls in einem Brennstoffzellensystem
DE102016209170A1 (de) Verfahren zum Überprüfen der Funktionsfähigkeit eines katalytischen Konverters zum Umwandeln eines Brennstoffs, insbesondere von Wasserstoff, in einem Fahrzeug
WO2008092538A1 (fr) Système de piles à combustible équipé d'un capteur conçu pour détecter des variations de pression dans une ligne d'alimentation hydraulique
WO2023001744A1 (fr) Dispositif de remplissage pour réservoirs d'hydrogène, réservoir d'hydrogène doté du dispositif de remplissage et procédé de remplissage d'un réservoir d'hydrogène
EP2918894A1 (fr) Dispositif et procédé de blocage de sécurité d'installations à gaz liquéfié
DE102007014325B4 (de) Verfahren und Vorrichtung zur Überwachung eines Drucksignals, insbesondere eines Raildrucksignals eines Common-Rails-Systems
DE102004005446A1 (de) Mit Brennstoff betreibbare Vorrichtung zur Wandlung von Energie, insbesondere Brennstoffzellenvorrichtung
DE102013007324A1 (de) Verfahren und Vorrichtung zur Durchführung einer Dichtigkeitsprüfung eines Flüssiggas-treibstoffsystems eines Kraftfahrzeugs
DE102005004741A1 (de) Verfahren und Vorrichtung zur Diagnose von Sensoren einer Luftzuführung einer Brennkraftmaschine

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880010639.0

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08708931

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2008708931

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2010500167

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1020097020313

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 6339/CHENP/2009

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2009139911

Country of ref document: RU

ENP Entry into the national phase

Ref document number: PI0808027

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20090831