Quiz: What is the principle behind a turbocharger, and how does it September 8, 2025 by Alex Turner What is the principle behind a turbocharger, and how does it increase engine efficiency? Discover more about Vehicle Engine and Automobile at our home page. A) A turbocharger uses exhaust gases to spin a turbine, which forces more air into the engine for better combustion. B) A turbocharger compresses the fuel before it enters the engine, increasing the overall fuel efficiency. C) A turbocharger cools the engine intake air, which allows for a denser mix of air and fuel. D) A turbocharger reduces the engine’s size, which in turn increases horsepower without additional fuel consumption. Submit Answer