【作者】

Christoph Kendlbacher,Thomas Lengenfelder

【摘要】

论文已在中国上海举行的2013年CIMAC大会上发表。论文的版权归CIMAC所有。 EPA Tier4, IMO Tie3 and EU3b emission limits require injection systems which enable full application flexibility and excellent mixture preparation. This applies to high speed as well as medium speed engines. NOx emission limits can either be reached by high EGR rates in the combustion chamber or by SCR after treatment of the exhaust gases.EGR applications require excellent mixture preparation and distribution to prevent soot formation during the combustion. Applications with SCR after treatment have a penalty due to additional reduction agent costs during engine operation. They have to compensate the reduction agent costs by significant improvement of fuel economy. This can be achieved by full flexibility of injection timing, the capability of multiple injections and excellent mixture preparation. Both approaches lead to the need of common rail injection systems with optimized mixture preparation. The papers presents system and component designs of the Modular Common Rail System for high and medium speed Diesel and medium speed HFO engines up to 2200 bar fuel pressure. These injection systems cover the full range from 100 to 350 kW/Cyl and have full system lay out flexibility for engines from L4 to V20 engines. The production roll out for the Diesel injection systems starts in 2013 for high speed and will be completed for medium speed engines in 2015. It is covering marine, Construction & Industry (C&I), locomotive and gen set applications. Measures to improve the performance, durability and robustness of the injection system down to component level are presented, focusing on the key components high pressure pump and injector. Optimizations of the high pressure injection components for fatigue stress, wear, cavitation and fuel atomization as well as the contribution of simulation tools are shown.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

3

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