How many forms of turbocharging are there?
1. Exhaust turbocharger:
The exhaust gas from the engine is used to achieve the purpose of supercharging. The supercharger has no mechanical connection with the engine and is driven by a turbine driven by the exhaust gas of the internal combustion engine.
2. Mechanical booster:
The device is installed on the engine and is connected with the crankshaft of the engine by a transmission belt, and the power is obtained from the output shaft of the engine to drive the rotor of the supercharger to rotate, thereby blowing the air into the supercharger.
3. Compound booster:
It is to combine the two systems of supercharging and turbocharging on one engine, so that the advantages and disadvantages of both sides can complement each other to achieve a better supercharging effect.
4. Air wave booster:
It is a new type of supercharger by using the high pressure of the exhaust gas to pressurize the fresh air in the intake pipe by the propagation of the air pressure wave through a special rotating chamber.
Compound supercharging technology
Compound supercharging technology adopts both mechanical supercharging technology and turbocharging technology, which theoretically can completely eliminate the problem of turbo lag. However, due to the complex structure of the compound supercharger, its application has been limited for a long time, and it is generally only used in two-stroke diesel engines and some special occasions.
When the engine speed is low, the supercharger is used to provide intake air, thereby eliminating the problem of power drop caused by insufficient compression ratio before the turbo intervenes; when the engine speed reaches a certain level and the turbo is fully started, the supercharger is automatically disconnected , the intake air is supplied by the turbocharger.
The compound supercharged engine makes good use of the advantages of supercharging technology and turbocharging technology, improves the output power and output torque of the engine in the full range of engine operating conditions, and completely eliminates the problem of turbo lag, which represents the future turbocharger. The development direction of supercharging technology.