What turbocharging does is to compress the air entering the engine, allowing the cylinder to hold more air and then inject more fuel, generating greater power. If a car has a certain displacement, then its number of cylinders and the volume of each cylinder are fixed, and the amount of air it can hold in a naturally aspirated state is fixed. So if you want to enter more air, you can only compress the air. The turbocharger does this job by compressing the air and increasing the intake volume.

A car determines the amount of fuel injected by calculating and controlling the amount of intake air. The throttle we step on controls the throttle, which is the amount of intake air. So if you want to increase the fuel injection volume, you can only increase the intake volume, otherwise more oil and less air will lead to incomplete combustion. For cars with turbocharging, the air is compressed and the intake volume increases, resulting in a corresponding increase in fuel injection. With a lot of mixture and limited space, the explosive force generated is stronger, so cars with turbocharging will feel more powerful.

The force that drives the turbocharger to rotate comes from the exhaust gas, so it does not consume additional energy. However, there is a drawback that the turbocharger can only function when the engine speed is increased, and most cars need to operate at 1500 rpm or above.

Just like our family car usually uses exhaust gas turbocharging, which fully utilizes the energy of exhaust gas to apply power to the turbocharger. After a series of operations, the impeller will compress the air, achieving the goal of entering more air.

The speed of the turbocharger turbine and impeller is very high, often exceeding 100000 revolutions, so it uses floating bearings, which is like removing the steel balls from ordinary bearings and replacing them with oil films. The shaft and bearings are also oil films and do not directly contact each other, relying solely on oil for lubrication and protection. So turbocharged cars have higher requirements for engine oil, usually using fully synthetic engine oil and requiring timely maintenance!