The present disclosure envisages an engine operating on Jaypal cycle. The engine comprises a compressed air source. A combustion chamber is in fluid communication with the compressed air source and afuel source, wherein the combustion chamber is configured to allow combustion of a fuel charge to produce combusted fuel charge. A first storage tank is in fluid communication with the combustion chamber, wherein the first storage tank is configured to store the combusted fuel charge, which is high pressure high temperature gas to perform work as per application requirements.