FUEL INJECTION NOZZLE,申请号WO2003JP12715-传众专利搜索

FUEL INJECTION NOZZLE

申请公布号：WO2004036033(A1)

申请号：WO2003JP12715

申请日期：2003.10.03

申请公布日期：2004.04.29

申请人：

BOSCH AUTOMOTIVE SYSTEMS CORPORATION;YOKOTA, TORU;IINO, KENICHI

发明人：YOKOTA, TORU;IINO, KENICHI

分类号：F02M47/02;F02M61/16;F16J15/48;(IPC1-7):F02M61/16;F16J15/46

主分类号：F02M47/02

摘要：<p>A seal structure (30) of a fuel injection nozzle for sealing high-pressure fuel in a pressure introducing chamber (21) with a high pressure annularly formed between an injector housing (2) and a valve body (6) in which a valve piston (5) is slidably inserted so as not to be leaked to a low pressure side from a clearance (28) formed between the injector housing (2) and the valve body (6), wherein an annular seal member (31) is installed in the pressure introducing chamber (21), the outer diameter dimension of the seal member (31) is made smaller than the diameter dimension of an outer annular wall (2B) on the outside of the pressure introducing chamber (21) to increase a tightness between the seal member (31) and the valve body (6), whereby a sealing function in the pressure introducing chamber (21) of the fuel injection nozzle (1) can be increased.</p>