Combined impact and coating on diesel engine using diesel-biodiesel blends

Abstract

The purpose of this study is to determine the optimal fuel injection pressure and the split injection technique by comparing the performance, combustion, and emission characteristics of biodiesel blends made from jatropha and karanja at a variety of fuel injection pressures. Both jatropha and karanja are combined with diesel in a ratio of 20 (biodiesel makes up 20 % of the mixture, and diesel makes up 80 %). J20 had a lower BSFC and a higher thermal efficiency than diesel, with the exception of when it was operating at full load. Additionally, increasing and decreasing the injection pressure as well as performing split injection helped reduce emissions. The information gathered from the pressure sensor located inside the cylinder was measured, and then the lab view programme was used to calculate the combustion characteristics. These characteristics included the mass fraction burned and the rate of heat release. the peak in-cylinder pressure increased by 5–6 bar because the split injection helped to improve the combustion behaviour of the engine. Splitting the injection reduced NO emissions at all loads, with the exception of full load, where it had no effect when the fuel injection pressure was raised to 1200 bar. Split injection achieves a marginally higher efficiency of 25 % even when working with light loads. The split injection techniques help to improve the performance and emissions in CI engines using biodiesel mixes.