| 摘要 |
<p>The invention relates to a fuel injector for injecting fuel into the combustion chamber of an internal combustion engine having a nozzle needle (3) which is guided in a hole (1) of a housing part (2) such that it can move in a reciprocating motion for opening and closing at least one injection opening (4) and a magnet assembly (5) for the direct or indirect actuation of the nozzle needle (3), wherein the magnet assembly (5) comprises an armature component (6) which is of single-piece or multiple-piece configuration and can move in a reciprocating motion. According to the invention, the magnet assembly (5) comprises, furthermore, a sleeve-shaped component (7) in order to enlarge the magnetic circuit, which sleeve-shaped component (7) can be used as a clamping sleeve (8) and/or to connect the housing part (2) to at least one further housing part (9, 15), with the result that the sleeve-shaped component (7) defines the maximum external diameter D of the fuel injector in the region which is critical for installation space.</p> |
