Multiple injection strategies for optimizing mixture formation and combustion in large-sized Diesel engines aiming for lowest CO2- and pollutant emission using maritime fuels

将电控共轨系统引入到大型柴油发动机中，可以根据不同燃料（例如EN 590柴油、MFO、HFO）的特性进行可变喷射和燃烧。从而给出了燃烧低质量且因此难以点燃的燃料的新选择。为了设定合适的喷射参数，必须获得关于喷射行为、混合物形成、燃烧和污染物形成的知识。在这方面，关于使用船用燃料（MDO、HFO）的科学资料很少。创建合适的仿真工具需要对缸内过程有广泛的了解。为了验证模型的光学和激光光学分析是必要的。在罗斯托克大学的活塞机械和内燃机研究所，一个光学可访问的高压/高温喷射室和一个能够运行重质燃油的单缸研究发动机，也是光学可访问的，满足给定的要求。高端废气测量系统和化学废气分析可以验证污染物形成的模型。本项目的目的是扩大关于燃烧和污染物形成的知识库，使用几乎没有研究过的但典型的海洋燃料，这可能与蒸馏燃料有很大不同。在此基础上，应开发新的喷射策略，以实现大型柴油机的低排放燃烧。

Introducing electronically controlled common rail systems to large-sized Diesel engines offers the potential of variable injection and combustion of different fuels (e.g. EN 590 Diesel, MFO, HFO) tailored to their individual properties. Thereby new options for combusting low quality and hence hardly ignitable fuels are given. For setting suitable injection parameter knowledge about injection behavior, mixture formation, combustion and pollutant formation has to be gained. In this matter scientific information regarding the use of maritime fuels (MDO, HFO) are rare. Creating suitable simulation tools requires broad knowledge about the in-cylinder processes. To validate the models optical and laser-optical analyses are necessary. At the University of Rostock, Institute of Piston Machines and Internal Combustion Engines an optically accessible high-pressure / high-temperature injection chamber and a single-cylinder research engine capable of running heavy fuel oils, also optically accessible, fulfill the given requirements. High-end exhaust gas measuring systems and chemical exhaust gas analytic can validate models of pollutant formation.The purpose of this project is to enlarge the knowledge base regarding combustion and pollution formation using hardly studied, but marine-typically fuels, which may differ significantly from distillate fuels. Based on that knowledge new injection strategies for low emission combustion in large-sized Diesel engines shall be developed.