Which engine component uses exhaust gas energy to increase the volume within the cylinder?

Which engine component uses exhaust gas energy to increase the volume within the cylinder?

• A. Supercharger
• B. Turbocharger
• C. Intake Manifold
• D. Piston Ring

Answer: (B)

Turbocharging uses exhaust energy to drive a turbine, which powers a compressor that forces more air into the cylinder. That increased air charge means more fuel can burn each cycle, boosting power. The exhaust energy is the key here—the turbine uses that energy rather than a belt or crankshaft drive. The other components don’t serve this purpose: a supercharger is belt-driven from the crankshaft, not the exhaust; the intake manifold simply distributes incoming air (it doesn’t compress it); piston rings are seals around the piston and don’t affect air charging.

Turbocharging uses exhaust energy to drive a turbine, which powers a compressor that forces more air into the cylinder. That increased air charge means more fuel can burn each cycle, boosting power. The exhaust energy is the key here—the turbine uses that energy rather than a belt or crankshaft drive.

The other components don’t serve this purpose: a supercharger is belt-driven from the crankshaft, not the exhaust; the intake manifold simply distributes incoming air (it doesn’t compress it); piston rings are seals around the piston and don’t affect air charging.