A review on performance of biogas and hydrogen on diesel engine in dual fuel mode

The growing concern of energy demand and environmental pollution using fossil fuel influences the requirement of alternative fuel for a clean and healthy environment. Numerous research works have been carried out to use alternative fuels in order to optimize the energy requirement. This review presents an in-depth analysis on the impact of alternative fuel in compression ignition (CI) engine in order to develop performance, emission and combustion characteristics. Deterioration in the performance parameters such as brake thermal efficiency (BTE) and exhaust gas temperature (EGT) has been found between 2 and 22% whereas a significant increase in brake specific fuel consumption (BSFC) was reported up to 36% by using gaseous fuel as an alternative source of energy in dual fuel engine. Further the analysis on combustion indicates increase in peak cylinder pressure and heat release rate up to 23% and 30% respectively. Emission analysis shows reduction in nitrogen oxides and smoke emission between 20 and 60%. However the dual fuel engine shows a significant increase in hydrocarbon (HC) and carbon monoxide (CO) emission up to 30% when compared with normal diesel engine.