What does turbo mean?


Release time:

2023-09-27

A turbocharger (Tubro) is actually an air compressor. It uses the exhaust gas from the engine as power to push the turbine in the turbine chamber (located in the exhaust duct), and the turbine drives the coaxial impeller in the intake duct?, The impeller compresses the fresh air sent by the air filter pipe, And then sent to the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase simultaneously, and the degree of air compression is increased, and the intake air volume of the engine is increased accordingly, and the output power of the engine can be increased.

A turbocharger (Tubro) is actually an air compressor. It uses the exhaust gas from the engine as power to push the turbine in the turbine chamber (located in the exhaust duct), and the turbine drives the coaxial impeller in the intake duct?, The impeller compresses the fresh air sent by the air filter pipe, And then sent to the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase simultaneously, and the degree of air compression is increased, and the intake air volume of the engine is increased accordingly, and the output power of the engine can be increased.
The biggest advantage of turbocharging is that it can greatly increase the power and torque of the engine without increasing the engine displacement. After an engine is equipped with a turbocharger, its maximum output power can be increased by about 40% or more compared with that without a turbocharger.
There are four main categories of supercharged engines:
1. Mechanical supercharging system (Supercharger): It is installed on the engine and connected to the crankshaft of the engine by a belt. Power is obtained from the output shaft of the engine to drive the rotor of the supercharger to rotate, thereby boosting the air into the intake manifold.
Advantages: The speed of the rotor corresponds to the engine speed, so there is no lag or lead, and the power output is smoother;
Disadvantages: Because it consumes part of the engine power, it will lead to low supercharging efficiency.
2. Exhaust gas turbocharging system: Use the exhaust gas discharged from the engine to achieve the purpose of supercharging. The supercharger has no mechanical connection with the engine, and the compressor is driven by the turbine driven by the exhaust gas of the internal combustion engine. General boost pressure up to 180 ~ 200kPa, or 300
About kPa, it is necessary to add an air intercooler to cool the high-temperature compressed air. Domestic cars began to be used in Audi 200 with 1.8 displacement in 1998. Later, there were 1.8T and Audi A41.8T of Audi A6 until Passat 1.8T and Bora 1.8T.
Advantages: increased efficiency is higher than mechanical supercharging;
Disadvantages: The power output of the engine lags slightly behind the opening of the throttle. It usually takes a while to increase the throttle. Later, the engine will have an amazing power explosion.
3. Compound supercharging system: that is, exhaust gas turbocharging and mechanical supercharging are used together, and high-power diesel engines are used more. The compound supercharging system engine has high output power, low fuel consumption and low noise, but the structure is too complicated.
4. Air wave supercharging system: The pulse air wave of high-pressure exhaust gas is used to force air compression. This system has good low-speed supercharging performance, good acceleration, and a wide range of working conditions; but it is large in size, heavy and noisy.