In a supercharger, the temperature rise due to compression ensures two things: 1) complete vaporization of fuel; 2) more even delivery of the mixture to the cylinders.

• A. Complete vaporization of fuel; 2) More even delivery of the mixture to the cylinders.
• B. Reduced wear; 2) Higher fuel consumption.
• C. Increased torque; 2) Lower RPM.
• D. Lower temperature; 2) Reduced pressure.

Answer: (A)

The temperature rise from compressing the intake charge in a supercharger is a key factor in how the fuel mixes with the air. When the air is compressed, its temperature goes up, and that extra heat helps fuel vaporize more completely as it enters the intake. A better-vaporized fuel-air mixture burns more cleanly and predictably, which means the engine can rely on a more uniform combustion process across the cylinders. At the same time, the increased pressure from the supercharger makes the charge denser and pushes it into the cylinders more evenly, helping each cylinder receive a similar amount of mixture. Put together, these effects explain why fuel vaporization becomes more complete and the mixture is delivered more evenly to the cylinders.

The other scenarios don’t align with what compression heating does: they either describe effects not directly caused by the heat of compression (like wear or specific fuel economy changes), or mix torque with RPM in a way that isn’t a direct result of the temperature rise. Also, compression raises temperature and pressure, not lowers them.