Ramachander Jatoth, Gugulothu Santhosh Kumar, Sastry Gadepalli Ravikiran, Bhsker Burra
Department of Mechanical Engineering, National Institute of Technology Andhra Pradesh, Andhra Pradesh, India.
Department of Mechanical Engineering, GITAM University, Hyderabad, India.
Environ Sci Pollut Res Int. 2022 Jan;29(1):119-132. doi: 10.1007/s11356-021-13909-3. Epub 2021 Apr 19.
Optimization of fuel injection strategies can maximize the utilization of ternary fuel by addressing the issues concerning fuel consumption, engine performance, and exhaust gas emission. In the midst of the pervasiveness of plant-based biofuel, this paper focused on maximizing the mahua oil biodiesel usage in a diesel engine having a common rail direct injection (CRDI) system without any engine modifications. The crude oil extracted from the seeds of Madhuca longifolia is known in India as mahua butter and has shown impressive fuel properties such as lower viscosity, flashpoint, boiling point, and comparable calorific value to diesel. 1-Pentanol, which has a chain of five carbons and can easily be blended with both diesel and biodiesel, is a promising type of alcohol for the future. In this study, the influence of fuel injection pressure with ternary fuel (diesel + mahua methyl ester + pentanol) on engine characteristics of CRDI diesel engine was analyzed. The fuel injection pressure is varied from 20 to 50 MPa so that ternary fuel can be properly utilized. The high injection pressure of 50 MPa has better combustion characteristics and higher brake thermal efficiency (4.39%) value than other injection pressure values. A better mixture is formed due to well-atomized spray, and as a result, the levels of CO (22.24%), HC (9.49%), and smoke (7.5%) fall with the increase in injection pressure. The usage of ternary fuel raised the NO emission (12.46%) value and specific fuel consumption (SFC) with a decrease in the BTE (brake thermal efficiency) which attributes to its properties and combustion characteristics.
通过解决与燃油消耗、发动机性能和废气排放相关的问题，优化燃油喷射策略可以最大限度地提高三元燃料的利用率。在植物基生物燃料普遍存在的背景下，本文重点研究了在不进行任何发动机改装的情况下，如何在具有共轨直喷（CRDI）系统的柴油发动机中最大限度地使用麻疯树油生物柴油。从长柄马胡卡种子中提取的原油在印度被称为麻疯树黄油，它具有令人印象深刻的燃油特性，如较低的粘度、闪点、沸点，以及与柴油相当的热值。1-戊醇有五个碳链，很容易与柴油和生物柴油混合，是未来一种很有前景的醇类。在本研究中，分析了三元燃料（柴油+麻疯树甲酯+戊醇）的燃油喷射压力对CRDI柴油发动机发动机特性的影响。燃油喷射压力在20至50MPa之间变化，以便三元燃料能够得到合理利用。50MPa的高喷射压力具有比其他喷射压力值更好的燃烧特性和更高的制动热效率（4.39%）。由于喷雾雾化良好，形成了更好的混合气，结果，随着喷射压力的增加，CO（22.24%）、HC（9.49%）和烟度（7.5%）水平下降。三元燃料的使用提高了NO排放（12.46%）值和特定燃油消耗（SFC），同时制动热效率（BTE）降低，这归因于其特性和燃烧特性。
