6 Most Common Types Of Turbochargers

Turbochargers increases the intake air volume and pressure of an engine by harnessing the kinetic energy of the engine’s exhaust gas flow. It consists of two main components: the turbine and the compressor.In order to increase the engine’s output power and efficiency, exhaust gases are forced into a turbine rotor which allows it to spin and move its centrifugal pressurizer that squeezes massive amounts of air onto an engine for delivery.In particular,in mountainous regions or applications that require more power, turbochargers can make a significant contribution to engine performance.

What Are The Common Types Of Turbo?

Single Turbo

 A single turbocharger system consists of only one turbocharger. Diesel vehicles and some gasoline vehicles commonly employ single turbochargers. Single turbos are driven by exhaust gas flow, thereby increasing the engine’s power and efficiency.


Widely used in gasoline and diesel engines, including various types of vehicles such as sedans, trucks, SUVs.

Twin Scroll Turbo

A twin scroll turbocharger features two separate intake passages and turbines. This design reduces interference between turbines and enhances engine responsiveness and efficiency. Twin scroll turbos are typically used in high-performance cars and diesel engines.


Typically found in high-performance cars and some high-performance diesel engines.

Variable Geometry Turbo(VGT Turbo)

VA variable geometry turbocharger has adjustable turbine inlet vanes that can adjust the turbine’s geometry based on engine load and speed. This design optimizes boost performance under different conditions, improving low-end torque and high-end power. Variable geometry turbos are commonly used in modern diesel engines and high-performance cars.


 Widely used in modern diesel engines, including passenger cars, commercial vehicles, agricultural machinery.

Electric Turbochargers

 Electric turbochargers drive the turbine using an electric motor rather than exhaust gas flow. This design offers quicker response times and a broader operating range, particularly suitable for turbocharging systems in hybrid vehicles and electric cars.


Mainly used in turbocharging systems for hybrid vehicles and electric cars.

Sequential Turbo

A sequential turbocharger system has two or more turbos of different sizes, with one turbo operating at low speeds and the other at high speeds. This design provides smooth power delivery and a wide torque curve to adapt to various driving conditions and demands.


Common in high-performance cars, especially turbocharged performance models.

Wastegate Turbochargers

Wastegate turbochargers control turbine speed and boost pressure using a wastegate. The wastegate regulates exhaust gas flow to prevent turbine overspeed and limit boost pressure. This design ensures the engine receives adequate boost under all conditions and prevents damage from excessive pressure.


Virtually all turbocharged engines are equipped with wastegates.

When Choosing Turbochargers, What should be Considered:

Engine Requirements:

 First and foremost, it’s essential to consider the performance needs of the engine, including desired power and torque output. Depending on the engine’s design and anticipated usage conditions, selecting a suitable turbocharger to meet these requirements is crucial.

Operating Environment: 

Consider where the vehicle will be operating. For instance, if it will be operating in high-altitude regions or requires high-altitude performance, a larger turbocharger may be needed to compensate for the thin air.

Brand and Quality: 

Choose reputable brands and turbochargers known for their reliability and quality. Turbochargers of higher quality typically offer longer lifespans and better performance.


Ensure that the chosen turbocharger matches other components of the engine and vehicle. This includes considering the turbocharger’s size, intake capacity, and exhaust flow to ensure compatibility with the engine and optimal performance.


 Lastly, consider budget constraints. Turbochargers vary widely in price, so it’s essential to find a balance between performance needs and available budget.

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