Patent ID: 8006669
Filing Date: 2011-08-30
Classification: F02M

Abstract:
1. A sealing arrangement of a piezoactuator for a fuel injection valve of an internal combustion engine, comprising: connecting pins projecting from the piezoactuator and a head arrangement placed onto the piezoactuator, the head arrangement including first openings for each of the connecting pins to pass through, an insulating disk arranged on top of said head arrangement having second openings corresponding to said first openings, and a sealing element formed from a material forming a seal against liquid the sealing element including (a) a disk shaped portion located outside of the first openings and on top of said insulating disk and (b) sealing portions extending through the second openings in the insulating disk and into each of the openings in the head arrangement, wherein the sealing portion extending into each opening directly seals against both (a) a radially exterior outer surface of the respective connecting pin extending through that opening and (b) a radially interior surface in said first openings of the head arrangement.