A method for determining the functionality of a pressure regulator and a liquefied gas fuel system

The invention relates to a method for determining the functionality of a pressure regulator (140). The pressure regulator (140) alternating between a first state, where fuel gas in liquid phase (111 ) is drawn from the gas storage device (110), and a second state, where fuel gas in gaseous phase (11...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Marcus Gralde, Svante Löthgren
Format:	Patent
Sprache:	eng ; swe
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES FIXED-CAPACITY GAS-HOLDERS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING STORING OF DISTRIBUTING GASES OR LIQUIDS SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a method for determining the functionality of a pressure regulator (140). The pressure regulator (140) alternating between a first state, where fuel gas in liquid phase (111 ) is drawn from the gas storage device (110), and a second state, where fuel gas in gaseous phase (112) is drawn from the gas storage device (110). The method comprising: determining (s101 ), at a first time, a first thermodynamic state of the gas storage device (110); determining (s102), at a second time, a second thermodynamic state of the gas storage device (110); calculating (s103) an expected thermodynamic state of the gas storage device (110) for said second time, based on the setting of the pressure regulator (140); the first thermodynamic state and the mass of the fuel gas outtake between the first time and the second time; and determining (s104) the functionality of the pressure regulator (140) by comparing the expected thermodynamic state with the determined second thermodynamic state.