Which device increases air flow into the cylinders by using exhaust gas energy to drive a turbine?

Which device increases air flow into the cylinders by using exhaust gas energy to drive a turbine?

• A. Supercharger
• B. Induction
• C. Forced induction
• D. Turbocharger

Answer: (D)

Using exhaust gas energy to drive a turbine that increases air flow into the cylinders is the principle of a turbocharger. In a turbocharger, exhaust gases spin a turbine connected to a compressor on the intake side. The spinning turbine drives the compressor, which pressurizes the incoming air before it enters the cylinders. More pressurized air means higher air density, so more oxygen is available for combustion, allowing more fuel to be burned and producing more power. This is a form of forced induction that relies on exhaust energy rather than being belt-driven like a supercharger. Induction refers to the intake system in general, not a turbine-driven device. Turbochargers optimize the use of waste energy, though they can experience turbo lag and typically use a wastegate to regulate boost.

Using exhaust gas energy to drive a turbine that increases air flow into the cylinders is the principle of a turbocharger. In a turbocharger, exhaust gases spin a turbine connected to a compressor on the intake side. The spinning turbine drives the compressor, which pressurizes the incoming air before it enters the cylinders. More pressurized air means higher air density, so more oxygen is available for combustion, allowing more fuel to be burned and producing more power. This is a form of forced induction that relies on exhaust energy rather than being belt-driven like a supercharger. Induction refers to the intake system in general, not a turbine-driven device. Turbochargers optimize the use of waste energy, though they can experience turbo lag and typically use a wastegate to regulate boost.