As we all know , the car engine is by burning fuel in the engine cylinder so that the external power output. Under certain circumstances the engine displacement , if you want to increase the engine output power , in addition to multi-fuel combustion to provide more air.

Supercharged engine technology is a way to improve the intake capacity . It does this by using a special compressor , advance into the cylinder to compress the gas , into the cylinder gas density increase , increasing the amount of intake air , to better meet the needs of the combustion of fuel , so as to achieve the purpose of increasing engine power.

Methods supercharged engines are mainly three types: mechanical supercharger , exhaust gas turbocharger and supercharger complex . Turbocharged diesel vehicles previously used domestic cars 1998 Audi began using the 200 CC 1.8 , after another Audi A6 1.8T (ie Turbocharaed, turbocharged) until the latest Passat 1 .8 T.

Turbocharged advantages are obvious , not on the basis of an increase in engine displacement , can greatly improve the power and torque , the maximum power output can be increased approximately 40% , such as about 1.8T car exhaust and 2.3 liters considerable amount of power the car . In addition , after the introduction of the supercharged engine technology , but also improve fuel economy and reduce emissions . Of course , after the introduction of engine exhaust gas turbocharger technology , the maximum explosion pressure and average temperatures generated in the work will be greatly improved , so that the engine's mechanical properties , lubrication performance will be affected . This is by far, the main reasons turbocharger technology not widely used in gasoline.

Advantages: no increase in engine displacement , based on the power and torque can be greatly improved . Disadvantages: turbo work hysteresis and high maintenance costs.