Fuel injector of an improved type

摘要: Fuel injector (1), comprising a main tubular body (2), provided with at least one through pipe (3) which ends in spray nozzle (4) can the fuel present inside (3), and shutter unit (5), which is mobile axially inside said pipe (3), from towards position of closure, in which the (5) itself abuts sealing surface (7) provided on (4), seals it a fluid-tight manner; being made a cup-type body, base (9) defined by a sealing disc flexible material, which there are provided an annular projection (10) and stop (11), co-axial relative to former; (11) having height (h'') lower than annular sealing (10), such as abut sealing surface (7) only temporarily, subject resilient deformation (9) itself.