The use of engine exhaust energy to drive turbochargers, known as exhaust gas turbochargers (referred to as turbocharging), as shown in the exhaust gas turbocharger system. Exhaust gas turbochargers are characterized by no mechanical connection between the turbocharger and the engine. They are connected by gas. Because the work done by the compressor is a part of the energy recovered by the turbine from the exhaust gas, the turbocharged engine can not only increase the power of the engine, but also improve its thermal efficiency and reduce the fuel consumption. If you see the Turbo or T logo in the rear of the car, it means that the car engine is turbocharged. Turbocharger is actually Taiwan's air compressor, which is the use of exhaust emissions from the engine to promote the turbine inertia, turbine and co-axial impeller impeller compressed air sent by the air filter pipe, the air pressurized into the cylinder. When the engine speed increases, the exhaust emission speed and turbine speed are also increased simultaneously, the impeller to compress more air into the cylinder, the air pressure and density increase can burn more fuel, the corresponding increase in fuel and adjust the engine speed, You can increase the engine's output power.