发明名称 Fuel injection device has differential pressure, high-pressure chambers re-filled via hydraulically operated non-return valves subject to pressure in high pressure chamber to vent differential chamber
摘要 The device has an injector supplied by a high-pressure source and a pressure booster with a piston separating a chamber connected to the source from a high pressure chamber connected to the injector and a differential pressure chamber with a 2/2-way valve for operating the booster. The chambers are re-filled via hydraulically operated non-return valves subjected to pressure in the high pressure chamber to vent the differential chamber. The device has a fuel injector (3) supplied by a high-pressure source (21) and a pressure booster (2) between the source and injector with a movable piston (5) separating a chamber connected to the source from a high pressure chamber (11) connected to the injector and a differential pressure chamber (10) with an associated 2/2-way valve for operating the booster. The differential pressure and high-pressure chambers are re-filled via hydraulically operated non-return valves (26,31) that are subjected to the pressure in the high pressure chamber for venting the differential pressure chamber.
申请公布号 DE10251932(A1) 申请公布日期 2004.05.19
申请号 DE20021051932 申请日期 2002.11.08
申请人 ROBERT BOSCH GMBH 发明人 GEYER, GERHARD
分类号 F02M47/02;F02M57/02;F02M59/36;F02M59/46;(IPC1-7):F02M57/02 主分类号 F02M47/02
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