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What You Must Know About The Turbocharger

Turbochargers are critical to the power output and efficiency of the diesel engines. The function of a turbocharger is to compress more air flowing into the engine’s cylinder. When air is compressed, more fuel can be added to the engine for the same size, which then can promote the increased mechanical power and the overall efficiency of the combustion process. All in all, a turbocharged engine contributes to better packaging, weight saving benefits and improved fuel economy.

How does a turbocharger work?

The turbocharger mainly consists of two sections: the turbine and the compressor. The turbine part includes the turbine wheel and turbine housing. The turbine housing will guide the exhaust gas into the turbine wheel and the energy from the exhaust gas turns the turbine wheel, while the gas then exists in the turbine housing. The compressor also has two parts called the compressor wheel and compressor housing. The compressor wheel is attached to the turbine. When the turbine turns the compressor wheel, the high-velocity spinning draws in air and compresses it. Then the compressor housing transforms the high-velocity, low-pressure air stream into a low-velocity, high-pressure air stream in process of diffusion. The compressed air is pushed into the engine that helps the engine to burn more fuel to produce more power.

How to maintain the turbocharger?

Due to the turbocharger often works at high speed(8000-11000r/min) and high temperature(about 600°C), we must pay attention to the maintenance of it to extend its lifetime. Here are some main points should be noted.

  1. Allow the idle time

After the engine is started, especially in winter, it should be allowed to idle for a period of time to allow the lubricating oil to fully lubricate the bearings before the turbocharger rotor runs at high speed.

  1. Don’t turn off the engine immediately

After the engine runs at high speed for a long time, it cannot be turned off immediately. If the engine is stopped suddenly when the engine is hot, it will cause the oil retained in the turbocharger to overheat and damage the bearings and shafts.

  1. Keep it clean

When disassembling the turbocharger, keep it clean, and plug each pipe joint with a clean cloth to prevent debris from falling into the it and damaging the rotor. During maintenance, care should be taken not to collide and damage the impeller. If the impeller needs to be replaced, a dynamic balance test should be performed on it. After reassembly is complete, remove the blockage.

  1. keep regular cleaning

Because the turbocharger often runs at high temperature, its lubricating oil pipeline is prone to partial coking due to the high temperature, which will cause the turbocharger bearing to be damaged due to insufficient lubrication. Therefore, the lubricating oil line should be cleaned after a period of operation.

  1. Pay attention to daily maintenance

Before getting on of getting off the vehicle, check the connection of each pipe in the air passage to prevent them from being loose and falling off, which may cause the failure of the turbocharger and the short-circuit of the air into the cylinder.

After the engine is turbocharged, the structure of the parts is strengthened. In terms of use and maintenance, the maintenance of the engine must be strengthened, and the correct operation method must be adopted.

 

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