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首页> 外文期刊>Energy Conversion & Management >Performance and exhaust emission characteristics of direct-injection Diesel engine when operating on shale oil
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Performance and exhaust emission characteristics of direct-injection Diesel engine when operating on shale oil

机译：页岩油运转时直喷式柴油机的性能和废气排放特性

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This article presents the comparative bench testing results of a naturally aspirated, four stroke, four cylinder, water cooled, direct injection Diesel engine when running on Diesel fuel and shale oil that is produced in Estonia from local oil shale. The purpose of this research is to investigate the possibility of practical usage of the shale oil as the alternative fuel for a high speed Diesel engine as well as to evaluate the combustion efficiency, brake specific fuel consumption, emission composition changes and the smoke opacity of the exhausts. Test results show that when fuelling a fully loaded engine with shale oil, the brake specific fuel consumption at the maximum torque and rated power is correspondingly higher by 12.3% and 20.4%. However, the brake thermal efficiencies do not differ widely and their maximum values remain equal to 0.36-0.37 for Diesel fuel and 0.32-0.33 for shale oil. The total nitrogen oxide emissions from the shale oil at engine partial loads remain considerably lower although when running at the maximum torque and rated power, the NO_x emissions become correspondingly higher by 21.8% and 27.6%. The smoke opacity of the fully loaded engine at a wide range of speeds is lower by 30-35%, whereas the carbon monoxide and unburned hydrocarbon emissions in the exhausts at moderate and full load regimes do not undergo significant changes.
机译：本文介绍了自然吸气，四冲程，四缸，水冷，直喷式柴油发动机在爱沙尼亚由当地油页岩生产的柴油和页岩油上运行时的对比台架试验结果。这项研究的目的是研究页岩油作为高速柴油发动机替代燃料的实际用途的可能性，并评估其燃烧效率，制动比油耗，排放成分变化和烟气的不透明度。排气。测试结果表明，当使用页岩油为满负荷发动机供油时，在最大扭矩和额定功率下，制动比油耗分别增加了12.3％和20.4％。但是，制动器的热效率差异不大，柴油的最大值和页岩油的最大值保持等于0.36-0.37，而等于0.32-0.33。尽管在最大扭矩和额定功率下运行时，页岩油的总氮氧化物排放量仍然相当低，尽管在最大扭矩和额定功率下运行时，NO_x排放量分别增加了21.8％和27.6％。满载发动机在很宽的转速范围内的烟气不透明度降低了30％至35％，而在中等和满载条件下废气中的一氧化碳和未燃烧的碳氢化合物排放量并未发生明显变化。

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