Demand for the petroleum products is increasing continuously at a global level and their existence comes to an end soon in future. Also, they produce large amounts of exhaust emissions when used in internal combustion (IC) engines. Diesel engines, in particular, emit a higher quantity of toxic engine exhaust emissions, which are harmful to living things especially human beings. This demands feasible, sustainable and renewable energy resources to solve the above two concerns mentioned. The advancement in IC engine technology powered with the combination of biofuels both liquid and gaseous fuels also contributed a lot in addressing the above two issues. The work reported here focuses on the development of new combustion concept called homogeneous charge compression ignition (HCCI) engine with a high-pressure injection system to inject biodiesel in combination with gaseous fuel to address the above two issues. The extensive use of a combination of both biodiesel and gaseous fuel will pave way for the energy security of the country besides not affecting to global climate change.

The extensive work reported here is broadly classified into Production of Biodiesel, dual fuel (DF), Common rail direct injection (CRDI) and homogeneous charge compression ignition (HCCI) engines operations: