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Due to the increased fuel costs and concern towards environmental emissions, the transportation interests of the people are leaning towards electric mobility. Since there is no ICE involved in electric vehicles, fuel and emission crisis can be eliminated. When EVs are considered, powertrain becomes the most important factor, which is responsible for driving the vehicle. Improving the powertrain is given more importance as it reflects the overall vehicle performance to a great extent. Most commonly used motor drives for EVs are permanent magnet and induction motors. The magnets, brushes involved in these motors results in complex construction as well as maintenance. Switch Reluctance Motor has various advantages over other motors such as simple construction due to absence of magnets, easy maintenance, good fault tolerance and good reliability. These advantages make it a very prominent and interesting alternative for electric vehicle applications.

Mobile Air Conditioner's (MAC) are becoming part of every mobility solution, both for goods and people. Developed nations have started reigning in the side effects for inevitable use of refrigerants during usage and service. The most stringent and current regulation related to servicing of MAC is SAE J2788 for R134a refrigerant. This paper will discuss the parameters influencing AC service and challenges there by. The SAE J standard mandates recharge accuracy of ±15°g at 21 to 24°C temperature on Chevy Suburban for a target charge quantity of 1360 g. Though the standard is limited to testing condition at laboratory temperature, actual conditions in a service workshop would demand higher degree of fine tuning to meet efficient functioning of MAC, despite many controllable and uncontrollable variables. This paper would examine some of such variables and technological approaches adopted in achieving the above requirements.

In this paper, benefits of high performance CFD computations for ground vehicle aerodynamics are discussed with the examples of Ahmed body and Formula SAE external aerodynamics. Both problems are highly compute intensive in terms of physics and their grid resolutions. Grid resolution is usually kept high to resolve flow separation, wake kind of complex physical phenomenon. For this, computations have been performed for more than 20 million cells grid. Firstly, Reynolds Averaged Navier-Stokes (RANS)-based turbulence study of Ahmed model is done for three slant angle variations, 25°, 30°, and 35°. Sensitivity of solver on solution is analyzed by a grid refinement study. The 2 million and 22 million cells mesh are used for the detailing of solution accuracies and solver speed up. Commercial solver, CFD++, and open source solver, OpenFOAM, are used for RANS computations. Their speed up test is done on supercomputer Eka.