| 摘要 |
The invention relates to an injector (2) for a common rail injection system of an internal combustion engine, said injector comprising an injector housing (4), a valve element (8) arranged in the injector housing (4), a sealing ring (22) used as a seal between a high-pressure region and a low-pressure region of the injector (2), and a bearing ring (24) used to support the sealing ring (22). Said bearing ring is arranged with the sealing ring (22) in an annular region (18) between the injector housing (4) and the valve element (8), and is provided with a plurality of relief grooves (36) arranged at a distance in the peripheral direction, in the lower side thereof opposing the sealing ring (22), and a plurality of recesses (34) arranged at a distance in the peripheral direction, in the outer peripheral edge (28) thereof. According to the invention, the relief grooves (36) and the recesses (34) are staggered in the peripheral direction.
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