| 摘要 |
PCT No. PCT/DE98/02056 Sec. 371 Date Jun. 22, 1999 Sec. 102(e) Date Jun. 22, 1999 PCT Filed Jul. 22, 1998 PCT Pub. No. WO99/20892 PCT Pub. Date Apr. 29, 1999A fuel injection system with a common rail pressure reservoir which receives fuel at high pressure, and with a dual-substance nozzle for bifluid injection of fuel and a supplementary fluid into an intern combustion engine. The system includes a first 2/2-way valve (MV1) in the injection line between the common rail pressure reservoir and a pressure chamber surrounding the nozzle needle of the dual-substance nozzle, and a second 2/2-way valve (MV2), whose inlet communicates via a supply line with the injection line at a point between the first 2/2-way valve (MV1) and the pressure chamber (3.5), and whose outlet communicates with an outlet line on a fuel low-pressure side. The system is economical and at the same time, it becomes possible to shift the metering for supplementary fluid to a single metering valve that controls an entire group of injectors.
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