Evaluating combustion, performance and emission characteristics of diesel engine using karanja oil methyl ester biodiesel blends enriched with HHO gas

Effect of Biodiesel on the Performance and Emission Characteristics of Diesel Engines

“…Thangaraj el at. [41] found that at no load and at full load, BTE increases by 2.61% and 21.67% respectively for Karanja oil methyl ester biodiesel blend enriched with HHO gas when compared to diesel. Krishna et al [45] stated that, at a speed of 1800 rpm, BTE of EGR coupled semi adiabatic diesel engine fuelled with blended rubber seed biodiesel is increased by 7% when diesel is taken as reference.…”

“…It produces NOX but is completely free of SOX. It produces less amount of hydrocarbons (HC), CO, PM and CO2 [5,16,17,[19][20][21][22][23][24][25][31][32][33][34][35][36][37][38][39][40][41][42].Wang et al [32] concluded that with increase in blending, NOX emissions also increases. Same Conclusion was given by Leila et al [13].On the other hand, a study tells that other emissions like total Hydrocarbon, Smoke Opacity and PM decreases with blending [43].…”

“…Most of the researchers [20,21,33,35,37,60,71,72,[118][119][120][121][122] agreed with the fact that as the concentration of biodiesel in the blend increases, BTE decreases. But some of them also observed that BTE increases with increase of biodiesel in the blend [22,23,37,41,45]. Chiatti et al [33] did experiments for performance of engine with ULSD (ultralow sulphur Diesel) as biodiesel.…”

Emission evaluation on 3-hole and 4-hole nozzle diesel engine with Jatropha and Pongamia (Karanja) mixed bio oil

“…CO emissions for utilized B20 are found to be low and it can be accredited to the more efficient utilization of the biodiesel with more number of holes in nozzle [7]. Since the number of holes in 3H nozzle is less, it creates more concentrated diesel distribution and poor fuel atomization and as a result it ends in higher local equivalence ratio in the high fuel reactivity regions [12]. Consequently, partial oxidation of mixtures takes place in the fuel rich regions which tends to produce more CO. Figure 6a also confirms that the CO emission is less for biodiesel blend when compared to diesel alone in both 3H and 4H nozzles.…”

“…This reduced NO X gas emission by 3H nozzle is mainly due to decreased combustion temperature [13]. NO X emissions are significantly decreased with reduced nozzle holes, as fewer nozzle holes produce more concentrated diesel distribution [11,12]. Similarly, NO X emissions increase as load increases due to increase in the gas temperature in combustion chamber [14].…”