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Effect of ternary fuel blends on performance and emission characteristics of stationary VCR diesel engine
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects ( IF 2.9 ) Pub Date : 2020-07-02 , DOI: 10.1080/15567036.2020.1785591
Chandan Kumar 1, 2 , Kunj Bihari Rana 1 , Brajesh Tripathi 1
Affiliation  

From last two decades, research in the field of alternative, clean and renewable bio-fuels has been increased dramatically for performance improvement, emission control, and running cost reduction in internal combustion engines due to the continuous increase of fuel pricing and depletion of the available nonrenewable fuels. In the present study, mixture of diethyl ether and nitromethane is proposed as a bio-fuel to evaluate the feasibility of diesel-diethyl ether-nitromethane (D-DEE-NM) ternary blends as compared to pure diesel. For the experiments, a VCR diesel engine was used to determine the performance and emission characteristics of D-DEE-NM ternary fuel blends at different concentrations, loads, and compression ratios. In the first phase of experiments, D-DEE7.5-NM2.5 blend (diesel 90%, diethyl ether 7.5 %, nitromethane 2.5 %) was observed as best fuel at standard engine parameters. The improvement in engine performance (BTE increased 17.39% and BSFC decreased 19.44%) and emission reduction (smoke 27.94%, NO x 23.33%, and CO 28.57%) was noticed using D-DEE7.5-NM2.5 blend as compared to pure diesel at full load condition; however, slight increment (3.57%) was found in HC emission. Further, the experiments were performed using selected blend (D-DEE7.5-NM2.5) at different compression ratios (CR), in which CR 19.5 was found best among all CRs under existing engine conditions. By increasing CR from 18.5 (standard) to 19.5, improvement in engine performance (3.70% increment in BTE and 6.89% decrement in BSFC) and emission reduction (smoke 12.24%, CO 20.00%, and HC 65.51%) were found using D-DEE7.5-NM2.5 blend; however, slightly higher level of NO x with tolerable increment of 6.52% was observed. D-DEE7.5-NM2.5 fuel blend was also found economic as compared to pure diesel.



中文翻译:

三元混合燃料对固定式VCR柴油机性能和排放特性的影响

在过去的二十年中,由于燃料价格的不断上涨和可用燃料的枯竭,替代性,清洁和可再生生物燃料领域的研究已大大增加,以改善内燃机的性能,减少排放并降低运行成本。不可再生燃料。在本研究中,建议使用乙醚和硝基甲烷的混合物作为生物燃料,以评估与纯柴油相比柴油-乙醚-硝基甲烷(D-DEE-NM)三元混合物的可行性。对于实验,使用VCR柴油机确定D-DEE-NM三元混合燃料在不同浓度,负荷和压缩比下的性能和排放特性。在实验的第一阶段,将D-DEE7.5-NM2.5混合(柴油90%,乙醚7.5%,硝基甲烷2。在标准发动机参数下,5%的燃油被视为最佳燃油。发动机性能的改善(BTE增加17.39%,BSFC减少19.44%)和排放减少(烟气27.94%,NO 与纯柴油在满载条件下相比,发现使用D-DEE7.5-NM2.5混合物时,发现x 23.33%,CO 28.57%);但是,发现HC排放量略有增加(3.57%)。此外,使用选定的混合物(D-DEE7.5-NM2.5)以不同的压缩比(CR)进行了实验,在现有发动机条件下,在所有CR中,CR 19.5最佳。通过将CR从18.5(标准)提高到19.5,可以发现使用D-可以改善发动机性能(BTE增加3.70%,BSFC减少6.89%)和减少排放(烟气12.24%,CO 20.00%和HC 65.51%)。 DEE7.5-NM2.5共混物;然而,观察到NO x含量略高,可忍受的增量为6.52%。还发现与纯柴油相比,D-DEE7.5-NM2.5燃料混合物经济。

更新日期:2020-07-03
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