METHOD FOR PRESSURE REGULATION OF GASEOUS FUEL IN DRIVE (VERSIONS) AND FUEL SUPPLY SYSTEM FOR GASEOUS FUEL DRIVE Russian patent published in 2017 - IPC F02D19/06 F02M21/02 F02M25/08 

FIELD: engines and pumps.

SUBSTANCE: mechanical pressure regulator can be modified for gaseous fuel pressure regulation for pressure variation on grounds of an electronic communication on pressure signal, and also of running conditions. According to the version, the regulating pressure in a low-pressure chamber of a pressure reducer can be modified by virtue of a control of a delivery of a gaseous fuel into or out of a pressure reducer reference chamber and by virtue of a following control of a gaseous fuel outlet from a reference chamber into a drive for combustion. The gaseous fuel pressure variation enhances the amplitude operating range of a fuel-injecting nozzle. A fuel supply under a lower pressure in the context of a low fuel requirement allows increasing a fuel injection pulse width. According to the version, the gaseous fuel pressure regulation permits the use of a lower gaseous fuel pressure in the process of a cold start involving only a limit stress for nozzle opening while a lower stress of nozzle opening can be sufficient for gaseous fuel priming with low-pressure priming. According to the other version, the pressure variation permits to obtain rare needs for peak fuel level without the creation of the abnormal loads upon the fuel-injecting nozzles in the context of the continuous injection of a gaseous high-pressure fuel.

EFFECT: capability of realizing the minority iteration count of a fuel injection.

18 cl, 5 dwg