What is the principle of turbocharging?

1, turbocharging, in fact, it is realized by turbocharger. The common understanding of turbocharger is air compressor, which increases the air intake by compressing air.

2. The turbocharger uses the inertia impulse of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller to pressurize the air sent by the air cleaner pipeline into the cylinder.

3. When the engine speed increases (when accelerating), the exhaust gas discharge speed increases synchronously with the turbine speed, and the impeller compresses more air into the cylinder. With the increase of air pressure and density, more fuel can be burned, and the fuel quantity and engine speed can be increased accordingly, thus increasing the output power of the engine.

4. Under the existing technical conditions, the turbocharger is a mechanical device to increase the "output power" of the engine under the condition of "unchanged working efficiency". Generally, it can increase the engine output power 10% to about 40%. Then it can be inferred that if PassatB5/ 1.8 engine is used, the "output power" after adding turbocharger should be equivalent to the output power of 2.3L displacement engine.

As you can imagine, this thing keeps the efficiency of the engine unchanged. With such a large machine, people can do more work, add a turbocharger to compress the air, expand the air intake, and thus increase the output power. It actually means overclocking the computer's CPU. I think people are still very smart and the engine is not strong enough. Try to make it strong enough.

Extended data:

The purpose of turbocharging:

The main function of turbocharging is to increase the air intake of the engine, thus improving the power and torque of the engine and making the car more dynamic. After the engine is equipped with turbocharger, its maximum power can be increased by 40% or even higher than that without turbocharger.

This means that the same engine can output more power after being supercharged. Take our most common 1.8T turbocharged engine as an example. After supercharging, the power can reach the level of 2.4L engine, but the fuel consumption is not much higher than that of 1.8L engine. Another level is to improve fuel economy and reduce exhaust emissions.

Baidu encyclopedia-turbo charging

Baidu Encyclopedia-Turbocharging Technology