In an internal combustion engine, a turbocharger is a forced induction device that compresses the intake air, forcing more air into the engine in order to produce more power for a given displacement.
Turbine section of a Garrett GT30 with the turbine housing removed
Cutaway view showing the two scrolls of a Mitsubishi twin-scroll (the larger scroll is illuminated in red)
Transparent exhaust manifold and turbo scrolls on a Hyundai Gamma engine, showing the paired cylinders (1 & 4 and 2 & 3)
Cutaway view of a Porsche variable-geometry turbocharger
Turbochargers have been used on various petrol engines since 1962, in order to obtain greater power or torque output for a given engine displacement.
Turbocharger
…Turbochargers have been used in the following applications: Petrol-powered car engines Diesel-powered car and van engines…
1962 Turbo Jetfire engine
1970 Toyota 7, twin-turbocharged racing car