A turbocharger helps a car’s engine get more air into the combustion chamber, upping the horsepower and making it more powerful. A turbocharger has two main parts: a turbine and a compressor. Both are mounted together and placed on the engine’s exhaust stream. When the car speeds up, the turbine’s blades spin faster, pulling more air in.
At the same time, the turbine prompts the compressor to work. The compressor – true to its name – compresses that air, condensing oxygen in that air to create a higher density, higher pressure air stream. That air is then forced into the engine, allowing more fuel to be injected into each engine cylinder for ignition. This process gives smaller engines a bigger power boost, comparable to the horsepower and torque of a larger engine – but with better fuel efficiency.