This paper deals with analysis of the influence of fuel injection pressure with ternary fuel (diesel + Mahua methyl ester + Pentanol) on the emission, combustion and performance characteristics of a four stroke, single cylinder, common rail direct injection diesel engine working at a constant speed and varying operating scenarios. The usage of ternary fuel raised the NO_x 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. The combustion process was affected by the physical properties of the blended fuel such as volatility and viscosity and this eventually affected the performance of the engine. The fuel injection pressure is varied from 20 MPa 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 %) falls with the increase in injection pressure.

本文分析了使用三元燃料（柴油+马华甲酯+戊醇）的喷油压力对恒定工作的四冲程，单缸，共轨直喷柴油发动机的排放，燃烧和性能特征的影响。速度和变化的操作方案。三元燃料的使用提高了氮氧化物的_排放排放（12.46％）值和比燃料消耗（SFC），而BTE（制动热效率）降低，这归因于其性能和燃烧特性。燃烧过程受混合燃料的物理特性（如挥发性和粘度）的影响，最终影响了发动机的性能。燃料喷射压力在20 MPa至50 MPa之间变化，从而可以适当地利用三元燃料。50 MPa的高喷射压力比其他喷射压力值具有更好的燃烧特性和更高的制动热效率（4.39％）值。良好的雾化喷雾形成了更好的混合物，结果，随着注射压力的增加，CO（22.24％），HC（9.49％）和烟气（7.5％）的含量下降。