Introduction to the principle of turbocharger

As global vehicle production grows and demand for high-performance, low-energy engines increases, more and more engines use turbochargers, and the production of impellers is changing. The tradition of machining aluminum alloy casings by impellers The way is gradually replaced by milling.

Turbocharger principle

The core components of the turbocharger are the turbine and the compressor wheel (see picture), which are connected together by a rotating shaft. The working principle of the turbocharger is very simple. The high-pressure exhaust gas impacts the turbine to make it rotate at a high speed. This speed is very high. Now the turbocharged speed of the vehicle (12~20)×104r/min, at the same time, the impeller can rotate at a high speed, and the impeller can High speed compressed air. The function of the turbine is to convert the kinetic energy of the exhaust gas into a high-speed rotation of the rotating shaft. The function of the impeller is to compress the air. The shapes of the two are completely different, and the direction of movement of the airflow is completely inconsistent. Because the turbine is subjected to the high-temperature and high-pressure exhaust gas of the engine, Therefore, the requirements for materials are very high.

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