What term describes forcing additional air into the cylinder to boost engine power?

What term describes forcing additional air into the cylinder to boost engine power?

• A. Scavenging
• B. Supercharging
• C. Turbocharging
• D. Induction

Answer: (B)

Pushing more air into the cylinder to increase power is achieved by a supercharger. A supercharger uses a compressor that is directly driven by the engine (often by a belt or gears) to force air into the intake at a higher pressure than atmospheric. With more dense air entering the cylinder, more oxygen is available for combustion, so more fuel can be burned, producing more power across the engine’s operating range. This differs from turbocharging, which also increases air intake pressure but uses exhaust gas to drive a turbine attached to the compressor, so boost depends on exhaust flow and can lag at low RPM. Scavenging refers to the flow of exhaust and fresh charge to clear the cylinder and prepare it for the next cycle, which improves efficiency rather than specifically increasing the forced air for power. Induction generally describes the intake process or system rather than the act of mechanically boosting the air pressure for extra power.

Pushing more air into the cylinder to increase power is achieved by a supercharger. A supercharger uses a compressor that is directly driven by the engine (often by a belt or gears) to force air into the intake at a higher pressure than atmospheric. With more dense air entering the cylinder, more oxygen is available for combustion, so more fuel can be burned, producing more power across the engine’s operating range.

This differs from turbocharging, which also increases air intake pressure but uses exhaust gas to drive a turbine attached to the compressor, so boost depends on exhaust flow and can lag at low RPM. Scavenging refers to the flow of exhaust and fresh charge to clear the cylinder and prepare it for the next cycle, which improves efficiency rather than specifically increasing the forced air for power. Induction generally describes the intake process or system rather than the act of mechanically boosting the air pressure for extra power.