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Ethers and esters as alternative fuels for internal combustion engine: A review
International Journal of Engine Research ( IF 2.5 ) Pub Date : 2021-09-15 , DOI: 10.1177/14680874211046480
Yang Hua 1
Affiliation  

Ether and ester fuels can work in the existing internal combustion (IC) engine with some important advantages. This work comprehensively reviews and summarizes the literatures on ether fuels represented by DME, DEE, DBE, DGM, and DMM, and ester fuels represented by DMC and biodiesel from three aspects of properties, production and engine application, so as to prove their feasibility and prospects as alternative fuels for compression ignition (CI) and spark ignition (SI) engines. These studies cover the effects of ether and ester fuels applied in the form of single fuel, mixed fuel, dual-fuel, and multi-fuel on engine performance, combustion and emission characteristics. The evaluation indexes mainly include torque, power, BTE, BSFC, ignition delay, heat release rate, pressure rise rate, combustion duration, exhaust gas temperature, CO, HC, NOx, PM, and smoke. The results show that ethers and esters have varying degrees of impact on engine performance, combustion and emissions. They can basically improve the thermal efficiency of the engine and reduce particulate emissions, but their effects on power, fuel consumption, combustion process, and CO, HC, and NOx emissions are uncertain, which is due to the coupling of operating conditions, fuel molecular structure, in-cylinder environment and application methods. By changing the injection strategy, adjusting the EGR rate, adopting a new combustion mode, adding improvers or synergizing multiple fuels, adverse effects can be avoided and the benefits of oxygenated fuel can be maximized. Finally, some challenges faced by alternative fuels and future research directions are analyzed.



中文翻译:

醚和酯作为内燃机的替代燃料:综述

醚和酯燃料可以在现有的内燃机 (IC) 发动机中工作,具有一些重要的优势。本工作从性能、生产和发动机应用三个方面对以DME、DEE、DBE、DGM、DMM为代表的醚类燃料和以DMC、生物柴油为代表的酯类燃料的文献进行了全面梳理和总结,以证明其可行性和可行性。作为压缩点火 (CI) 和火花点火 (SI) 发动机的替代燃料的前景。这些研究涵盖了以单一燃料、混合燃料、双燃料和多燃料形式应用的醚和酯燃料对发动机性能、燃烧和排放特性的影响。评价指标主要包括扭矩、功率、BTE、BSFC、点火延迟、放热率、升压率、燃烧持续时间、废气温度、CO、HC、NOx、PM 和烟雾。结果表明,醚和酯对发动机性能、燃烧和排放有不同程度的影响。它们基本上可以提高发动机的热效率并减少颗粒排放物,但它们对功率,燃油消耗,燃烧过程中,与CO,HC和NO的影响X的排放量是不确定的,这是由于操作条件下,燃料的耦合分子结构、缸内环境和应用方法。通过改变喷射策略、调整EGR率、采用新的燃烧模式、添加改进剂或协同多种燃料,可以避免不利影响,最大限度地发挥含氧燃料的好处。最后,分析了替代燃料面临的一些挑战和未来的研究方向。

更新日期:2021-09-15
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