Performance evaluation of Nahar oil–diesel blends in a single cylinder direct injection diesel engine

ABSTRACT

This study attempts to use plentiful available high oil content (67% of Nahar seed kernel) non-edible feedstock as a source for powering diesel engine. Various performance and emission characteristics of prepared Nahar oil–diesel blends (5%, 10%, 20%, 30%, and 40%) are analyzed in a single cylinder direct injection diesel engine at different load spectrum, in order to judge the optimum blend, which can be efficiently used in a diesel engine. 10% blending of Nahar oil with diesel fuel has shown a reduction in hydrocarbon and carbon monoxide emission by 8.64% and 8.34%, respectively. With the increase in blend concentration, the nitrogen oxide emission decreased considerably and smoke emission increased slightly. Further pressure crank angle and heat release rate analysis of 10% blending of Nahar oil with diesel confirms its smooth combustion inside the engine combustion chamber.

KEYWORDS:

• Alternative fuel
• combustion
• diesel engine
• emission
• Nahar oil
• performance

Acknowledgment

The authors thank Dr. Supriya Chavan Bobade, Indian Biodiesel Corporation, Pune for her support in laboratory.