发明名称 Boosted fuel injector with rapid pressure reduction at end of injection
摘要 A device for injecting fuel into the combustion chamber of an internal combustion engine including a high-pressure storage chamber, a pressure booster, and a metering valve. The pressure booster includes a work chamber and a control chamber separated from one another by an axially movable piston. A pressure change in the control chamber causes a pressure change in a compression chamber of the pressure booster. The compression chamber acts upon a nozzle chamber in the nozzle body. A pressure relief valve ( 40 ) is in a control line between the control chamber of the pressure booster and a 2/2-way metering valve, the pressure relief valve includes a valve body that acts upon at least one hydraulic chamber and can be made to communicate with the pressure prevailing in the high-pressure storage chamber.
申请公布号 US6892703(B2) 申请公布日期 2005.05.17
申请号 US20040488895 申请日期 2004.03.08
申请人 ROBERT BOSCH GMBH 发明人 MAGEL HANS-CHRISTOPH
分类号 F02M47/00;F02M45/00;F02M47/02;F02M57/02;F02M59/10;F02M61/10;(IPC1-7):F02M37/04 主分类号 F02M47/00
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