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Each after treatment system design should be done in such a way that considering the complete system objectives. Energy efficient exhaust system development requires minimum fuel consumption and maximum utilization of exhaust energy for reduction of the exhaust emissions and also for effective waste energy recovery system such as in turbocharger, heat pipe etc. from C.I. engine. Traditional manifold optimization has been based on tests on Exhaust system. This trial & error method can be effective but is very expensive & time consuming. Beside this method cannot provide any information about the actual flow structure inside the system. This vital information can be obtained using 3-D CFD analysis. The design engineers can study the flow structures & understand whether a particular system performs correctly or not.

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All have always wondered how the vehicles of future generation will look like. How will new developing technologies make their impact on the design & Development, operation, handling and aesthetics of our future cars? In the present work, the experimental investigation on single-cylinder, four stroke diesel engine has been carried out further modified by supercharged, turbocharged, and combination of super-turbocharged engine. It has been found that using super-turbocharging there is increase in brake power by 48.9 %, volumetric efficiency increases by 39.17 %, but thermal efficiency can increases upto3.15 % only because of 50 % loading condition, & ultimately it will increase loading capacity of the vehicle. These results will definitely be useful for future research work which may result in revolution in automobile sector.