THE FUNCTION OF TURBOCHARGER Turbos are, at times, fitted after market by car tuners and enthusiasts, although most cars and trucks come with them installed from the manufacturer. Though particular reasons may differ, all turbos boost power output from an engine that would otherwise be limited to less engine power. The main function of a turbocharger is to enhance the power output of an engine without making modification in the engine itself. Generally, an engine would have to be designed larger and accordingly heavier to gain power. In contrast, turbo chargers are much smaller and lighter. Moreover, a turbo is powered by the exhaust gases of the engine, which would normally leave the vehicle unused. The purpose of a turbo can be considered of as starting at the exhaust opening. Exhaust emissions from the engine go through the turbo before leaving through the exhaust system of the vehicle. The flow of these gaseous emissions prompts a turbine wheel inside the turbo to spin. On the other side of this turbine, along the same axis, there is a different wheel at the intake opening of the turbo. At the intake opening of the turbo, here is a second wheel that spins everytime the exhaustside turbine wheel spins because they are linked by the same shaft. This second wheel is called the impeller wheel because it’s revolving constricts the air coming into the turbocharger on the intake opening. This compressed air is then transported into the engine intake and because of the higher density of oxygen molecules, the engine supplies more fuel for each piston stroke ensuing in amplifying power. Inside the engine, the compressed air is used up and the remnants become exhaust emissions. This exhaust gas has more energy because it had been compressed and burnt with more fuel. This will result in the exhaust end turbine of the turbo to spin faster than earlier. The cycle will continue again and due to this, the turbo will continue to increase the compression of the intake air. However, too much power can damage the engine. To control the amount of air pressure a turbo produces, a control system must be used. Restricting the speed of the turbine wheel limits the speed of the intake opening compressor wheel, which will limit the quantity of air compression.