FIELD: machine building.
SUBSTANCE: pressure regulator assembly (5) for gaseous fuel supply system (1) to internal combustion engine (2), having first pressure reducer (7) configured to be connected to fuel tank (3), and second pressure reducer (8) actuated by electric drive (42) and having inlet (38) connected to outlet (27) of first reducer (7), and reduced pressure gaseous fuel discharge chamber (39) directed to engine (2); barrier element (22) of first reduction gear (7), moved by piston (25), which separates outlet hole (27) of the first reduction gear (7) from intermediate chamber (28), in which there is mechanical spring (29) for pushing piston (25), and is under pressure equal to the pressure in outlet chamber (39) of the second reduction gear (8).
EFFECT: disclosed is a pressure regulator assembly for a system for supplying gaseous fuel to an internal combustion engine, also disclosed is a method of supplying gaseous fuel to an internal combustion engine using a pressure regulator assembly.
8 cl, 5 dwg
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