【作者】

Marco Coppo

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC大会上发表，论文的版权归CIMAC所有。OMT’s new generation of common rail injector concept was presented during CIMAC Congress 2013. Since then, this concept was developed into different implementations suitable for two-stroke engines and for four-stroke medium speed engines of various bore sizes. The paper describes how the two-stroke version was designed for operating up to 1250 bar system pressure and to be capable of realising long injection cycles up to 40 ms typical of low speed engines without significant system pressure drop, while at the same time retaining the possibility to precisely operate in multishot mode with up to five injections per cycle. This was achieved with a system layout design that included an accumulator integrated in the injector body as well as external accumulators to act both as fuel reservoirs and as connection points from cylinder to cylinder, arranged in such a way that the two injectors mounted on each cylinder would draw fuel from different accumulators, so as to minimise their size. This injector design is currently undergoing a field test on a shuttle tanker engine. At the time of writing this abstract, the injectors had cumulated several hundreds of operating hours without any problem.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

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