Effect of blends of karanja oil on performance of a twin cylinder dual fuel diesel engine using producer gas

Abstract

In the present study, a twin cylinder 4-stroke dual fuel diesel engine is tested using diesel, K10 (10 % neat oil + 90% diesel) and K20 (20% neat oil + 80% diesel) with woody biomass producer gas. The test is performed using the above test fuels in dual fuel mode at different gas flow rates under a constant load of 10 kW. This work demonstrates the effect of gas flow rates and neat oil blends on performance, emission and pilot fuel savings of the test engine. It is observed that with increase in gas flow rates for all test fuels, performance parameters like brake specific energy consumption (BSEC) and exhaust gas temperature (EGT) increases, whereas brake thermal efficiency decreases. The emission parameters like carbon monoxide, hydrocarbon and carbon dioxide values are increases. However, the oxide of nitrogen (NOx) and smoke emission parameters are decreases with increase in gas flow rates. Similarly, in comparing between liquid fuels, with increase in blend percentage, BSEC and EGT increases compared to diesel. The BTE is the reverse case of BSEC. In case of blended fuels, all the above mentioned emission parameters shows lower values compared to diesel. The highest pilot fuel savings occurs in case of diesel, K10 and K20 are. 56%, 54% and 52% respectively at highest gas flow rates.