The Diesel Engine is an internal combustion engine in which ignition of the fuel that is administered into the combustion assembly is grounded by the raised temperature of the air in the container on account of the mechanical compression. Diesel engines work by pressing only the air. The engine is proffered with highest thermal efficiency of all practical internal or external combustion motor. Supplied with a very high expansion ratio as well as inherent lean burn, it enables heat dispersion by the excess air. Diesel Engine may be configured as either two-stroke or four-stroke cycles. It is originally employed as a more efficient substitution for stationary steam engines. The engine functions within a set series of events, which may be attained either in four or two strokes.