To talk about which is better, let us look at the essential difference between the two. Turbocharged engine is the use of high temperature exhaust gas to drive the turbocharger, supercharger and crank the engine power is used to drive the supercharger.

So supercharged relatively easy to produce heat. Its biggest advantage is that there is no turbo lag phenomenon. When the engine is idling, the mechanical supercharger actually had to work, so having sensitive low speed boost response.

Meanwhile, the power output will increase as supercharged crankshaft speed gradually increased, the torque curve is very flat, linear driving feel more like a large displacement naturally aspirated engine, very suitable for everyday driving.

Although the mechanical supercharger has a simple structure, low maintenance cost, high stability advantages, but also has its own limitations. Limited to the interior of the rotor can not reach as high-speed turbine (turbine blades up to 100,000 rev / min), supercharged engine at high rpm when power extension no turbo good.

Compared turbocharged, supercharged power boost is limited. And Supercharger Pulley belt crankshaft via connecting disk drives, will "eat" some of the engine power. Not only did not the turbine efficiency is high, it also means more fuel. Now, with the turbo lag phenomenon has been significantly alleviated, so from the depot production car, the turbo prevailed in the application.