Effect of Engine Operating Conditions and Injection Strategy on Performance and Exhaust Characteristics of Biodiesel Engines - A review

Abstract

As the main fuel for modern transportation, navigation, and industrial and agricultural production processes, excessive use of diesel fuel has caused the depletion of fossil fuels, rising fuel prices, and environmental pollution, in order to solve these problems, more scholars have devoted themselves to the research of alternative fuels.Biodiesel is one of the most commonly alternative fuels used for alternative energy, it has the advantages of environmental protection, non-toxic, renewable and without changing the engine structure for using.Under different engine operating conditions and injection strategies, improve engine performance and reduce exhaust emissions.Therefore, this paper summarized the effects of physicochemical properties (such as cetane number, kinematic viscosity, calorific value, density, oxygen content, etc.) of some common biodiesels on engine performance (such as cylinder pressure, heat release rate, BTEand EGT, etc.) and exhaust emissions (such as CO, HC, NO_x, CO₂, smokeandPM, etc.); And the effects of engine performance (such as BSFC, BTE, EGT, etc.) and exhaust emissions under different engine operating conditions (such as engine load, engine speed, compression ratio, EGR system, etc.) and different injection strategies (such as injection time, injection pressure, injection angle, etc.).