There are two control methods of bypass valve turbochargers, one is mechanical supercharging, which is usually used in truck diesel engines; The other is electronic control, which is usually used in cars.

Exhaust gas turbocharger working principle: exhaust gas from the engine exhaust manifold is high temperature and high pressure, with a certain amount of energy.

Swiss engineer Bich first applied turbocharger to aircraft engine and tank engine, in the existing technical conditions, turbocharger as a mechanical device that can make the engine increase the output power under the same working efficiency.

It is not easy to modify the turbocharger, to improve the power, to rely on fuel combustion in the engine cylinder to do work, so as to output power.

The most obvious effect of turbocharger on the engine is that the turbocharger will increase the mechanical and thermal load of the main parts of the engine, which requires the use of stronger and more high-temperature resistant metals to strengthen the engine.

Properly maintained turbochargers are not easily damaged. The service life of the turbocharger is basically the same as that of the whole vehicle.

Marine turbochargers are divided into exhaust gas turbochargers, composite exhaust gas turbochargers and combined turbochargers according to the charging mode.

When the exhaust turbine pressure is too high, the turbocharger bypass valve will open, so that the exhaust gas from the engine will be directly discharged without passing through the exhaust turbine, so as to avoid the phenomenon of excessive pressure of the turbocharger.

Check whether the turbocharger air filter is blocked, whether there are foreign bodies in the compressor intake pipe or compressor housing.

The starting feeling of turbocharged engine is very poor. This kind of slow start is not that the turbocharger works slowly, but that the time required for the turbocharger to reach a stable state will be longer.

Turbochargers have simple structure, do not consume the power of the engine itself, and high boost value. These factors lead to the powerful advantages of turbocharging. But the principle of turbocharging poses one of its biggest pitfalls: high temperatures.

Turbocharger oil leakage often occurs at the compressor end of the turbocharger accessories, because the compressor sealing device is a low-pressure area by the impeller side, which is prone to oil leakage.