What is a car impeller?

Automotive impeller is a common mechanical component in automotive engineering, also known as turbine or turbine blade. It is an important power transmission device, which is widely used in the turbocharging system of automotive engines to improve the output power and combustion efficiency of the engine.

Automotive impellers are made of metal materials, usually aluminum alloy or titanium alloy with good strength and high temperature resistance. The shape of the impeller is similar to that of a disk, and several specially designed blades are installed on its surface. These blades have been carefully designed according to the requirements of the principles of hydrodynamics, aiming to achieve the best aerodynamic and hydrodynamic performance.

Automobile impellers are mainly divided into two types: compressor impellers and turbine impellers. The compressor impeller is responsible for compressing the air entering the engine to provide more oxygen to the combustion chamber, thus achieving higher combustion efficiency. The turbine impeller uses the energy when the exhaust gas is discharged to drive the compressor impeller to achieve the effect of pressurizing and increasing work.

The working principle of automobile impeller is based on turbocharging principle and fluid dynamics principle. When the exhaust gas is discharged through the car engine exhaust valve, it will pass through the exhaust pipe and enter the turbocharger. In a turbocharger, the high-speed flow of exhaust gas causes the turbine impeller to spin. The coaxial compressor impeller then rotates, thereby compressing the intake air, increasing the intake density of the combustion chamber, allowing more fuel to burn and providing more power output.

The design and manufacturing process of automotive impellers is very strict. First, the shape and number of blades need to be determined according to the specific application requirements and engine parameters. Secondly, the selection of impeller materials needs to take into account the heat resistance and strength requirements in high temperature environments. The manufacturing process requires the use of advanced processing technology, such as CNC milling, cold extrusion, heat treatment, etc., to ensure that the impeller has accurate size, excellent surface quality and good strength characteristics.

With the development of the automotive industry, turbocharging technology is more and more widely used in the automotive field. As the core component of turbocharging system, automobile impeller plays an important role in improving engine power performance, fuel economy and environmental protection performance. In the future, with the development of new energy vehicles and hybrid vehicles, the design and manufacturing of automotive impellers will continue to innovate to meet new technical challenges and market demands.