Fuel injection valve for internal combustion engines with a housing (3) in which a pressure chamber (5) that can be filled with fuel under high pressure is formed, in which a nozzle needle (7) for opening and closing at least one injection opening (11) is ...

A valve for metering fluid is provided, which has a valve needle (13) actuated by a valve closing spring (14) and an electromagnet (15) for controlling a metering opening (12). The electromagnet (15) has a hollow cylindrical magnetic core (21) and a magnet...

In the disclosed electromagnetic fuel-injection valve: a non-magnetic or weakly magnetic guide bush (19) is affixed at the inner periphery of an immobile core (6); the front end of the guide bush (19) protrudes from the suction surface (6a) of the immobile...

A needle for use in a needle valve, such as the needle valve of a fuel injector, comprises a tip section (2), a first guide section (1) and a second guide section (3). The tip section (2) has a needle tip. The first guide section (1) is remote from the nee...

Valve assembly (4) of an injection valve (2), the valve assembly (4) comprising a valve body (10) including a central longitudinal axis (L), the valve body (10) having a cavity (11) which comprises an inner guide surface (12) in a guide area of the valve b...

An electromagnetic fuel injection valve is provided that includes a fuel inlet tube (26) extending from an outer end of a hollow fixed core (5), and a retainer pipe (23) that is inserted from the fuel inlet tube (26) into a hollow portion (21) of the fixed...

A fuel injection device has a valve body 34 that includes a downstream end opening 51, a fuel passage 31 communicated with the downstream end opening 51 and a valve seat 36 located adjacent to the downstream end opening 51. A valve member 42 is located in ...

A nozzle plate (26) has a cover wall (28), which covers the axial end surface of a valve body (21), having a reinforcing rib (30) on the radial outer side of a nozzle (29). A root portion (33) is welded to the valve body at a position lower than the protru...

In a spray characteristic in a direct injection system gasoline engine use electromagnetic system fuel injector (1), to a piston cavity a mixture of fuel and air having a combustible concentration is converged and making rich the mixture having the combust...