Due to the rapid depletion of fossil fuels and the need of regulating environmental pollution caused by growing exhaust emissions, a viable alternative fuel for use in diesel engines is desperately required. Blend of biodiesel B20 with Aluminium Oxide (Nanoparticles) was tested to improve efficiency and reduce emissions. When compared to ordinary diesel, there was a significant improvement in engine performance. The brake thermal efficiency, specific fuel consumption, volumetric efficiency, peak cylinder pressure, smoke, CO, HC, NO and exhaust gas temperatures were analysed. With the blends, the engine produced less smoke, CO and HC emissions. According to the engine test results, biodiesel blend with Aluminium Oxide can also be used as fuel to replace diesel without requiring any engine modifications.

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