The goal of this study is to investigate the use of compressed natural gas in a diesel engine compared to diesel fuel, according to exergetic and exergoeconomic analyzes. For this purpose, compressed natural gas (CNG) injector has been mounted to intake manifold and small, single cylinder diesel engine was converted to dual mode. Experiments have been carried out according to ISO 8178 E2 test cycle, at maximum power and four different load as 25%, 50%, 75%, and 100%. CNG ratios were chosen as 0%, 20%, 40%, and 60% percentages as energy content. Exergetic and exergoeconomic analyses were executed to results considering capital, operation-maintenance, fuel and environmental damage costs. According to results, diesel fuel has superiority than CNG fuels except full load. In these loads, with using CNG, exergetic efficiency and exergoeconomic factor reduces as up to 38.3% and 32.8%, and also exergy destruction percentage, lost exergy rate and specific cost of shaft work exergy unit increases as up to 10.8%, 74.8%, and 41.7%, respectively. Besides CNG fuels need to improve lower load conditions performance, CNG20 has the favorable exergetic results at full load. According to environment related cost results, remarkable cost of UHC affects negatively to CNG fuel results at 25% and 50% loads. Last of all, CNG20 is preferable at 75% load and all CNG fuels are preferable at full load conditions according to total cost flow rates against diesel.

这项研究的目的是根据运动和经济分析，研究与柴油相比柴油发动机中压缩天然气的使用。为此，已将压缩天然气（CNG）喷油器安装到进气歧管，小型单缸柴油发动机转换为双模式。根据ISO 8178 E2测试周期进行了实验，最大功率和四种不同的负载分别为25％，50％，75％和100％。选择CNG比率作为能量含量的0％，20％，40％和60％百分比。进行了能效和能效经济分析，并考虑了资本，运营维护，燃料和环境破坏成本。根据结果​​，除满负荷外，柴油比压缩天然气具有优势。在这些负载中，使用CNG，用能效率和用能经济因素分别降低了38.3％和32.8％，并且能干破坏百分比，火用损失率和竖井工作火用单位的单位成本分别提高了10.8％，74.8％和41.7％。除了需要提高低负荷工况性能的CNG燃料外，CNG20在满负荷条件下还具有良好的充能效果。根据与环境相关的成本结果，在25％和50％的负荷下，UHC的显着成本会对CNG燃料结果产生负面影响。最后，根据相对于柴油的总成本流量，在75％的负荷下CNG20是优选的，在满负荷条件下所有CNG燃料是优选的。除了需要提高低负荷工况性能的CNG燃料外，CNG20在满负荷条件下还具有良好的充能效果。根据与环境相关的成本结果，在25％和50％的负荷下，UHC的显着成本会对CNG燃料结果产生负面影响。最后，根据相对于柴油的总成本流量，在75％的负荷下CNG20是优选的，在满负荷条件下所有CNG燃料是优选的。除了需要提高低负荷工况性能的CNG燃料外，CNG20在满负荷条件下还具有良好的充能效果。根据与环境相关的成本结果，在25％和50％的负荷下，UHC的显着成本会对CNG燃料结果产生负面影响。最后，根据相对于柴油的总成本流量，在75％的负荷下CNG20是优选的，在满负荷条件下所有CNG燃料是优选的。