UPDATED ELECTROMECHANICAL GAS FUEL INJECTOR Russian patent published in 2008 - IPC F02M21/02 

FIELD: engines and pumps.

SUBSTANCE: invention allows producing a reliable and safe electromechanical injector with a minimised wear of moving parts, particularly, a mechanical element, a sealing element and feed line. The automotive internal combustion engine fuel feed electromechanical injector incorporates an electromagnetic actuator acting on a disk-like mechanical shut-off element intended for opening or closing the gas fuel passage from the feed line in delivery line communicating with the outlet. There is a sealing element arranged between the delivery line and aforesaid shut-off element, the sealing element being attached to the said shut-off element and moving together with it. The sealing element is furnished with a recess arranged on its end to interact with the delivery line end in the injector idle condition. The said end represents a taper-shape element. The truncated cone sealing element thrusts by its narrowing end upon the delivery line end in the injector idle condition and with the feed line blocked by the shut-off element. The elastomer material sealing element is fitted in a seat provided in the end face or the shut-off first end face facing the delivery line.

EFFECT: higher efficiency.

17 cl, 4 dwg