FIELD: engines and pumps.
SUBSTANCE: proposed system comprises the following components: switching electronic control unit, fuel tank, fuel feed means, standard high-pressure pump 7 at transport facility, tank for liquefied natural gas/ammonia and liquefied natural gas/ammonia feed means, extra radiator 10 with cooling fan, standard high-pressure fuel system 17 at transport facility and adapter 19 connected to high-pressure pump 7. Pump 7 serves to circulate and return liquefied natural gas/ammonia into tank. Said system comprises also a standard electronic control unit 20 at transport facility and hydraulic control valve assembly with solenoids 21 and/or check valves integrating ducts for circulation and return of liquefied natural gas/ammonia into tank. Control conditions, sequence of steps and time intervals of hydraulic control valve assembly solenoids 21 are preset in compliance with the conditions of engine running on liquefied natural gas/ammonia or on gasoline/diesel fuel selected by driver.
EFFECT: better starting, improved switching over from one fuel to another.
20 cl, 3 dwg
