Effects of a 70% biodiesel blend on the fuel injection system operation during steady-state and transient performance of a common rail diesel engine
Effects of a 70% biodiesel blend on the fuel injection system operation during steady-state and transient performance of a common rail diesel engine
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DOI：
10.1016/j.enconman.2011.10.028
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发表时间：
2012-08
影响因子：
10.4
通讯作者：
D. Tziourtzioumis;A. Stamatelos
中科院分区：
文献类型：
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作者：
D. Tziourtzioumis;A. Stamatelos
在一台2.0升共轨轿车柴油机上进行了燃用B70生物柴油的稳态和瞬态台架试验，并与燃用标准EN 590柴油的基线试验结果进行了比较。相同发动机的宏观稳态性能和排放已经在其他地方介绍过。当前的研究演示了发动机管理系统如何响应不同的燃料特性，重点是燃料系统动态和发动机的瞬态响应。一组特征瞬态操作点被选择用于测试。通过印加软件/ETAS Mac 2接口进行发动机ECU变量的数据采集。有关发动机性能的其他数据采集基于外部传感器。结果表明，在高燃料流量下，B70混合物的燃料系统动态特性和瞬态发动机操作存在显著差异。提出了对发动机ECU图和控制参数的某些修改，旨在改善现代发动机在高百分比生物柴油混合物上运行的瞬态性能。然而，在使用B70混合物长时间运行后观察到的高压泵故障暗示了在燃料中使用更保守的生物柴油混合物。
The results of steady state and transient engine bench tests of a 2.0l common-rail passenger car diesel engine fuelled by B70 biodiesel blend are compared with the corresponding results of baseline tests with standard EN 590 diesel fuel. The macroscopic steady-state performance and emissions of the same engine has already been presented elsewhere. The current study demonstrates how the engine management system responds to different fuel properties, with focus to the fuel system dynamics and the engine’s transient response. A set of characteristic transient operation points was selected for the tests. Data acquisition of engine ECU variables was made by means of INCA software/ETAS Mac2 interface. Additional data acquisition regarding engine performance was based on external sensors. The results indicate significant differences in fuel system dynamics and transient engine operation with the B70 blend at high fuel flow rates. Certain modifications to engine ECU maps and control parameters are proposed, aimed at improvement of transient performance of modern engines run on high percentage biodiesel blends. However, a high pressure pump failure that was observed after prolonged operation with the B70 blend, hints to the use of more conservative biodiesel blending in fuel.