The situation is like you take an electric fan and blow it into the cylinder

Turbocharger bearings are mainly divided into two categories, one is floating bearings (commonly known as Boss bearings), and the other is ball bearings.. Generally speaking, the engine can increase the extra power by at least 30%-40% after cooperating with such a 'forced intake' action. Ball bearings have many advantages: less friction, so there will be better turbine response (reduce turbo lag), and it is more favorable to the ultimate extraction of power; it has more stable dynamic control of the rotation of the turbine shaft (the traditional way is to rely on

The oil is used as the bearing and the stroke floats); the requirements for oil pressure and quality can be relatively reduced, which indirectly increases the service life of the turbine. After all, NA engine air is sucked in by vacuum. Even if the cylinder is full of air, the air pressure in the cylinder is less than or equal to one atmosphere.

The situation is like you take an electric fan and blow it into the cylinder, and you just pour the wind into it to increase the amount of air inside to get a larger horsepower, but this fan does not use an electric motor, but uses exhaust gas from the engine. Some NA engines switch to high-angle camshafts (Hi Cam to increase the overlap angle of the intake and exhaust valves), which can obtain high power at high speeds, but the disadvantage is that the torque at low speeds is poor, and if the angle is too large, There will be an unstable engine idling.

The turboshaft (Bearing) looks like a simple metal tube, but in fact it is a China Clutch Release Bearings precision part that is responsible for 120000-160000rpm rotation and ultra-high temperature. The floating bearing is actually a ring sleeved on the shaft.