DETERMINATION OF COMPLEX FUEL-ECOLOGICAL CRITERION FOR DIESEL WORKING ON WATER-FUEL EMULSION

Q4 Engineering
A. Marchenko, I. Parsadanov, A. Savchenko
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Abstract

Today, internal combustion engines are very common as energy sources in many countries around the world. This makes the tasks related to improving the environmental performance of internal combustion engines relevant. The introduction of alternative fuels in internal combustion engines is an effective way to reduce their negative impact on the environment. One of the most available and widespread alternative fuels for diesels is a water-fuel emulsion. The use of water-fuel emulsion makes it possible to reduce the specific fuel consumption of petroleum origin, as well as to achieve a significant reduction in emissions of harmful substances from diesel exhaust. However, due to differences in the physical properties of traditional diesel fuel and water-fuel emulsion, the course of the processes of mixture formation and combustion in the diesel cylinder changes significantly. This may be due to the emergence of a reserve for further improvement of the diesel engine by selecting the parameters of the diesel engine running on water-fuel emulsion. The study selected the following parameters for variation: compression ratio, boost pressure, duration of the injection process, injection timing. The article considers the influence of these parameters on the Brake-specific fuel consumption of diesel, the specific emission of particulate matter and nitrogen oxides, the maximum pressure in the cylinder. The nature and degree of influence of changes in the parameters of the diesel engine on its performance was determined using mathematical modeling. It should be noted that the influence of each of the parameters selected for variation is quite complex and often ambiguous. That is, when some indicators improve, others may deteriorate somewhat. Therefore, in order to select the most rational parameters of a diesel engine running on a water-fuel emulsion, it is necessary to simultaneously assess the economic and environmental performance of the diesel engine. For this assessment, a method was used to determine a comprehensive fuel and environmental criterion for a diesel engine running on a water-fuel emulsion. Thus, the article shows the potential for comprehensive improvement of environmental and economic performance of the diesel engine by choosing rational parameters.
水-燃料乳化柴油复合燃料生态标准的测定
今天,内燃机作为能源在世界上许多国家都很普遍。这使得与改善内燃机环境性能相关的任务变得相关。在内燃机中引入替代燃料是减少其对环境负面影响的有效途径。水-燃料乳化液是一种最有效和最广泛的柴油替代燃料。使用水-燃料乳化液可以减少石油源的特定燃料消耗,并大大减少柴油废气中有害物质的排放。然而,由于传统柴油和水-燃料乳化液的物理性质不同,使得混合气在柴油缸内形成和燃烧的过程发生了较大的变化。这可能是由于出现了一种储备,可以通过选择柴油机运行在水-燃料乳化液上的参数来进一步改进柴油机。研究选择了以下参数进行变化:压缩比、增压压力、喷射过程持续时间、喷射时机。本文考虑了这些参数对柴油机制动比油耗、颗粒物和氮氧化物比排放、缸内最大压力的影响。利用数学模型确定了柴油机参数变化对其性能影响的性质和程度。应该指出的是,选择用于变化的每一个参数的影响是相当复杂的,而且往往是模糊的。也就是说,当一些指标改善时,其他指标可能会有所恶化。因此,为了选择最合理的水-燃料乳化液柴油机运行参数,有必要同时对柴油机的经济性能和环境性能进行评估。为了进行评估,采用了一种方法来确定在水-燃料乳化液上运行的柴油机的综合燃料和环境标准。因此,通过选择合理的参数,可以全面提高柴油机的环保性能和经济性能。
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