A fuel injection valve includes a valve body, a fixed core, a movable core, a spring, a cup, and a guide. The cup contacts the spring and the valve body to transmit a valve closing elastic force to the valve body, and includes a cylindrical portion having a cylindrical shape. The guide has a sliding surface on which an outer peripheral surface of the cylindrical portion slides so as to guide the movement of the cylindrical portion in an axial direction while restricting the movement of the cylindrical portion in a radial direction. The guide has a recessed surface connected to the sliding surface and recessed to increase a gap between the recessed surface and the cup in the radial direction.

A valve assembly for a fluid injector is disclosed. The valve assembly includes a valve body having a longitudinal axis, an armature, a valve needle having a needle tip and a damping element. The armature and the damping element include penetrating first openings in which the valve needle is arranged. The damping element is fixed to the valve needle and arranged between the armature and the needle tip with respect to the longitudinal axis to attenuate a movement of the valve needle relative to the valve body during the operation of the valve assembly.

A fuel injection valve includes: a circular plate portion that is abuttable against an end surface of a needle opposite from a valve seat while the needle being provided to open and close an injection hole upon lifting and seating of the needle relative to the valve seat; and a tubular portion that extends from the circular plate portion toward the valve seat and has an end part, which is opposite from the circular plate portion and is abuttable against a movable core second contact surface of a movable core opposite from the valve seat. In a state where the circular plate portion abuts against the needle, and the tubular portion abuts against the movable core, a gap is formed between a flange member end surface of a flange of the needle and a movable core first contact surface of the movable core opposite from the valve seat.

A fuel injection valve includes: a holder which accommodates a valve body, has a surface magnetically facing the outer periphery of an armature, and is joined to a core; a housing which is press-fitted onto the outer periphery of the holder and accommodates a coil; and a cap which covers the fuel upstream side of the coil in a lid shape and is press-fitted onto the outer periphery of the core. The lower surface of the cap is brought into contact with the upper end surface of the housing in a radially slidable state and then an outer peripheral portion of a contact surface between the cap and the housing is joined by laser welding.

The present disclosure relates to a nozzle for a fuel injector that comprises a pivotably symmetrical nozzle member having a hollow space for introducing a nozzle needle, a nozzle tip that is provided at a longitudinal end of the nozzle member, and at least one opening for discharging fuel, and a nozzle needle arranged in the hollow space for a selective blocking of a fuel inflow to the at least one opening, wherein the nozzle needle is designed as tubular in the region of the nozzle tip and is adapted to conduct fuel in the interior of the tubular region to the at least one opening.

This invention refers to an optimized structure of a high flow fuel dosing valve applied to automobiles in general, particularly to high power racing cars with the purpose of opening and closing an orifice for fuel injection in internal combustion engines for power gain through an innovative and improved mechanical constructiveness of the coil body (1), coil (2), spring (3), needle (4), guide ring (5), lock (6), seat (7), sieve (8), needle body (9) and o-ring (10), with advantages of greater and faster fuel flow, durability, efficiency and power gain.

A fuel injector includes an injector housing having a fuel connector, and an outer housing surface extending around a longitudinal axis of the injector housing. The outer housing surface includes a cylindrical upper section, a cylindrical lower section, and a middle section. The fuel connector defines a connector axis oriented normal to a longitudinal axis of the injector housing and extending between a first connector end attached to the middle section, and a terminal connector end radially outward of the outer housing surface and having therein a fuel inlet. The fuel connector includes an outer connector surface having an unthreaded base section, and an externally threaded end section adjacent to the terminal connector end.

A fuel injection valve includes a valve body, a fixed core, a movable core, a spring, and a cup. The spring is elastically deformed according to valve opening operation of the valve body, and exerts a valve closing elastic force for closing the valve body. The cup contacts a valve closing contact surface of the valve body, and transmits the valve closing elastic force to the valve body. At a start of predetermined-distance movement of the movable core together with the cup, the cup is in contact with the valve closing contact surface, and the valve body or the cup has a supply flow channel through which fuel is supplied to the valve body closing contact surface which is in a state contacting the cup.

A fixed core generates a magnetic attraction force with energization of a coil. A movable core has an attracted surface facing an attracting surface of the fixed core is attracted to the fixed core to cause the valve body to open a nozzle hole. A stopper member abuts against the movable core to restrict movement of the movable core. The movable core has an abutment portion that abuts against the stopper member, and a core body portion in which the attracted surface is formed. The attracting surface and the attracted surface extend annularly around an axis line of the fixed core, are formed so as to be separated from each other in an axis line direction in a state where the abutment portion abuts against the stopper member, and a separation distance from each other increases toward a radially outer side.

A metering system for a fluid atomizer includes a housing, first and second metering members, and at least one solenoid. The housing includes a mixing chamber. The first metering member is operable to control flow of a first fluid to the mixing chamber. The second metering member is arranged coaxial with the first metering member and operable to control flow of a second fluid to the mixing chamber. The at least one solenoid is configured to operate at least one of the first and second metering members.