Performance and Emission analysis of Compression Ignition engine in Dual fuel mode using Rice bran biodiesel and LPG

摘要

In the modern world, pollution levels are increasing to a great extent mainly due to vehicular emissions which drives the industries towards finding alternative fuel sources like Hydrogen, CNG, LPG, Vegetable oil and many more. In the present study, Rice bran biodiesel was used along with liquefied petroleum gas in the dual fuel mode in a single cylinder, air cooled compression ignition engine and its performance and emission characteristics were studied. Rice bran ethyl ester was derived using ethanol and sodium hydroxide through Transesterification process. 7.5 mg/cycle of rice bran ethyl ester was injected with liquefied petroleum gas as pilot fuel. The experimental investigation revealed that the brake thermal efficiency was fo und to be comparatively better than straight diesel. The brake specific energy consumption was noticed to be lower for dual fuel mode than straight diesel mainly at part load operations. The CO and UBHC emissions was found to be reducing with an increase in NO x at high loading condition due to better co mbustion.