| 摘要 |
<p>A fuel injector (1) provided with an injection valve (7) comprising a mobile plunger (15); an injection jet (3) having a plurality of first through-holes (24) made starting from a chamber (25) arranged downstream from the injection valve (7); a supporting body (4) having a tubular shape and comprising a supply channel (5); and a sealing body (17), in which a valve seat (16) of the injection valve (7) is defined and the injection jet (3) is provided; the sealing body (17) is monolithic and has a disc-shaped plug member (18) passed through by the injection jet (3), and a guide member (19), which rises up from the plug member (18), is tubular in shape, receives within it the plunger (15) and has an external diameter smaller than the internal diameter of the supply channel (5), so as to define an external annular channel (20) for the fuel; in the lower part of the guide member (19) there are provided a number of second through-holes (21) which open into the valve seat (16).</p> |
