Upendra Rajak - Department of Mechanical Engineering, NIT Manipur-۷۹۵۰۰۱, India
Prerana Nashine - Department of Mechanical Engineering, NIT Rourkela-۷۶۹۰۰۸, India
Tikendra Verma - Department of Mechanical Engineering, NIT Manipur-۷۹۵۰۰۱, India

The unvarying condition diesel engines used for commercial applications, transportation and industries lead to the crisis of petroleum fuel diminution and ecological squalor caused due to exhaust gases. Therefore, in this paper optimization of the use of MSB in naturally aspirated, direct injection diesel engines, parameters of pure diesel (D۱۰۰), ۸۰% diesel + ۲۰% microalgae spirulina (B۲۰), ۶۰% diesel + ۴۰% microalgae spirulina (B۴۰) and pure microalgae spirulina biodiesel (B۱۰۰) were investigated at various fuel injection pressures (FIP) of ۱۸ to ۲۶ MPa and stationary injection timings (۲۳.۵° b TDC). The result shows that optimum effect can be obtained in ۲۲ MPa FIP, with B۲۰ bio-diesel without compromising the performance against diesel. B۲۰ blend presented less NOX and smoke emissions by ۱۳.۷% and ۲۲.۲% respectively with no significant change in engine performance when compared to diesel at full load operating condition. The simulation and experiment results are verified at the same operating conditions.

Numerical simulation, CI engine, pressure, performance, combustion, emission