What is the Difference Between Supercharging and Turbocharging?
2 Answers
Supercharging and turbocharging differ in the following ways: 1. Method: A supercharger is directly connected to the engine output via a belt, transmitting power as soon as the engine starts running; a turbocharger is driven by the engine's exhaust gases. 2. Rotation speed: A supercharger rotates relatively quickly; a turbocharger spins more slowly, with less noticeable boosting effects until the engine reaches a certain RPM. 3. Linear power output: The power source of a supercharger comes from the engine's output, which places a burden on the engine. Small-displacement engines generally do not use superchargers. Turbochargers are often installed on small-displacement engines to achieve high power output from a small displacement.
Both supercharging and turbocharging are methods to enhance engine power, but they operate on different principles. Superchargers are directly connected to the engine's crankshaft via a belt, so they spin as soon as the engine starts, delivering immediate power and a strong sense of acceleration when you hit the throttle. Turbochargers, on the other hand, are driven by exhaust gases and require sufficient exhaust flow to spin the turbine, resulting in a slight delay known as turbo lag. However, turbochargers are more efficient at high speeds and can save some fuel. Car enthusiasts often say turbochargers have greater potential—just a tune-up can significantly boost power—but they run hotter and are more prone to failure. While superchargers offer quick response, they consume some of the engine's power and tend to have higher fuel consumption.
