A __________ induction system uses a forward-facing scoop and pressure created by the vehicle's movement to increase static air pressure.

A __________ induction system uses a forward-facing scoop and pressure created by the vehicle's movement to increase static air pressure.

• A. Ram air
• B. Sequential injection
• C. Direct injection
• D. Venturi induction

Answer: (A)

Ram air induction uses a forward-facing scoop and the vehicle’s motion to raise the air pressure entering the intake. As the car speeds up, air has momentum and creates stagnation pressure in the intake path. The scoop directs some of this air into the plenum, boosting the static pressure above ambient. That extra pressure effectively increases the amount of air the engine can take in, which can improve power, especially at higher speeds on naturally aspirated engines. This approach is different from a Venturi induction, which relies on accelerating air through a narrow passage to create low pressure and draw air in, rather than increasing pressure with speed. The other options describe fuel delivery methods or a different air-flow principle, not pressurizing intake air via vehicle motion.

Ram air induction uses a forward-facing scoop and the vehicle’s motion to raise the air pressure entering the intake. As the car speeds up, air has momentum and creates stagnation pressure in the intake path. The scoop directs some of this air into the plenum, boosting the static pressure above ambient. That extra pressure effectively increases the amount of air the engine can take in, which can improve power, especially at higher speeds on naturally aspirated engines. This approach is different from a Venturi induction, which relies on accelerating air through a narrow passage to create low pressure and draw air in, rather than increasing pressure with speed. The other options describe fuel delivery methods or a different air-flow principle, not pressurizing intake air via vehicle motion.