Effect of fuel injection pressure on the diesel engine fuelled with Moringa oleifera oil biodiesel blends: vibration and noise study

Abstract

The purpose of the present study is to estimate the vibration and noise intensity of a single-cylinder direct injection diesel engine. The experiment was performed by varying the fuel injection pressures (FIP) such as 200 bar, 220 bar, and 240 bar respectively with four test fuel samples of Moringa oleifera oil biodiesel blends; BD0D100, BD10D90, BD20D80, and BD30D70. The intensity of vibration and noise has come down with the blends of Moringa oleifera biodiesel than regular diesel fuel (BD0D100). Besides, the increase in FIP looked at lower levels of vibration and noise disregarding fuel blends. Both the vibration and noise intensity was seen least with the BD20D80 fuel blend than leftover samples. The slightest RMS velocity and RMS noise were seen by 0.104 m/s and 39.71 dB correspondingly for BD20D80 than ordinary diesel at a FIP of 240 bar. Hence, the compression ignition engine can be operated with the BD20D80 fuel blend devoid of any amendment in the engine for the inferior vibration and noise. Keywords Biodiesel blends • Moringa oleifera • Noise • RMS velocity • Root mean square Abbreviations BD0D100 Clean biodiesel BD10D90 10% biodiesel in clean diesel BD20D80 20% biodiesel in clean diesel BD30D70 30% biodiesel in clean diesel CI Compression ignition ASTM American standards for testing materials ADC Analog to digital converter LDV Laser Doppler vibrometer RMS Root mean square CR Compression ratio FFT Fast Fourier transforms FIP Fuel injection pressure dB Decibel units KOH Potassium hydroxide B S. Jaikumar

Effect of diesel injection pressure for enhancing combustion and reducing mechanical vibration and noise emissions in a non-road diesel engine

“…In the literature, various studies can be found concerning the effects of DIP on engine performance, noise, and vibration. Jaikumar et al [14] conducted research to investigate vibration and noise in a diesel engine by varying the diesel injection pressure to 200, 220, and 240 bars. Additionally, they used diesel-biodiesel fuel blends as fuel.…”