Multi‐fuel performance and emission characteristics of an optimized thermal barrier coated diesel engine

Abstract

Owing to the depletion of world oil reserves and increased environmental issues, engine modifications amid alternative fuels to improve performance are alluring a lot of attention nowadays. More than half of the total energy generated in the internal combustion engines are dissipated from the system through frictional losses, engine part cooling, exhaust, etc. The minimisation of these energy losses through heat transfer can improve the engine performance to an extent. The finest alternative for minimizing the energy losses through heat dissipations from the engine is with the use of thermal barrier coated (TBC) combustion chambers. In this paper optimum working condition of a single cylinder Kirloskar diesel engine with a ceramic thermal barrier coating (Yttriastabilized zirconia) on the piston was determined using Design of Experiments (DOE) software and predictions were validated experimentally. Further the multi-fuel performance of a diesel engine with ceramic coated piston was also analyzed. The fuels used were diesel, pure biodiesel and optimized biodiesel blend B20. The optimum working condition was determined by using central composite design method in Design Expert-7 software. The B20 fuel with TBC engine resulted to the maximum efficiency. Further it was validated experimentally by performing experiment at rated revolutions per minute (RPM) in a Kirloskar made single cylinder direct injection computerized diesel engine.Eventually a mathematical equation for the relationship between brake power, brake specific fuel consumption and brake thermal efficiency was derived using DOE software.

Efficiency of preparation for solid fuel burning

“…Replacing natural gas with sawdust fuel, which is obtained from the waste of the wood processing industry in the north-western region of Ukraine, is a very promising and successful option (Ma et al 2022). Work on solid fuels is economical, effective and optimal for energy-generating enterprises of Ukraine, which helps to obtain energy in a high-quality and fast manner and supply it to industrial enterprises and other consumers (Surina et al 2022) A comprehensive positive solution to the problems of increasing the technical, economic efficiency and reliability of the operation of boiler plants due to the activation of solid fuel combustion can be obtained by creating an environment of simultaneous multiple electrodeless pulse ignition of plasma in the flame volume at the end of the pre-flame processes and, of course, in the location of the flame I, as a result of micro-explosions of her liquid (Sankar et al 2022). The rapid development of the development of effective methods of preparation for the burning of solid fuel at the moment will help in the effective solution of problems at a higher speed and will bring the quality of the results to a new modern level.…”