Supercharger
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In an internal combustion engine, a supercharger is a device which compresses the intake gas, forcing more air into the engine in order to produce more power for a given displacement. It is a form of
Roots-type Eaton M62 supercharger (right) on a 2006 Saturn (GM) Ion Redline Ecotec LSJ 4-cylinder engine
Internals of a rotary-screw (Lysholm) supercharger
1929 Blower Bentley with the supercharger ("blower") located in front of the radiator
Centrifugal supercharger for a Bristol Centaurus radial engine
Turbocharger
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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.
Supercharger
…a given displacement. It is a form of forced induction that is mechanically powered (usually by a belt from the engine's crankshaft), as opposed to a turbocharger, which is powered by the kinetic energy of the exhaust gases. However, up until the mid-20th century, a turbocharger was called a "turbosupercharger…
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