FUEL-INJECTION VALVE-TYPE NOZZLE Russian patent published in 2001 - IPC

FIELD: mechanical engineering; injection systems of internal combustion engines with compression of working mixture and forced ignition. SUBSTANCE: fuel-injection vale-type nozzle has a body, movable shutoff element engaging with support surface of seat made on bushing forming valve seat and changing into outlet hole on its lower end in direction of fuel flow. Outlet hole reaches lower end face side of bushing. Spraying plate is connected by the first weld seam with lower end face side of bushing. Spraying plate has at least one spray hole. Slot is made in lower end face side of bushing between outlet and the first weld seam. Said slot encircles outlet hole with radial gap. EFFECT: improved sealing of valve in closed state. 4 cl, 2 dwg