Effect on the Emissions, Combustion, and Performance Characteristics of Karanja Oil Biodiesel and Di- tert Butyl Peroxide Assisted Using Hydrogen as a Secondary Fuel in a Diesel Engine

The world faces major problems due to the growing need for fuel in daily life. Biodiesel is a desirable alternative fuel source that lowers engine emissions. In this paper, the effect on the emissions, combustion, and performance characteristics of Karanja oil biodiesel has been studied at a higher load (69%) in comparison to pure diesel fuel. The enhancement in the brake thermal efficiency (BTE) was observed to be 12.7% by the addition of 5% di- tert butyl peroxide (DTBP), 40% biodiesel of Karanja oil (BKO), and 16% hydrogen. The diminishment in nitrogen oxide (NOx) emission was observed to be 14.38% with 5% DTBP, 40% BKO, and 7% hydrogen. Similarly, the diminishment in carbon monoxide (CO) emission was observed to be 5.01% by adding 3% DTBP, 30% BKO, and 25% hydrogen. The reduction in carbon dioxide (CO2) emission was 39.19% by adding 5% DTBP, 40% BKO, and 25% hydrogen as a secondary fuel. The diminishment in unburnt hydrocarbon (HC) emission has also been found. Finally, the diminishment in the net heat release rate (NHRR) and mean gas temperature (MGT) by the addition of biodiesel of Karanja oil (10%-40%) with or without hydrogen fuel in a diesel engine.