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What Is the Function of Air Intake System And Exhaust System?

Air intake system and exhaust system play an important role in diesel generator. The exhaust system collects the hot gases generated from the combustion and routes them out to the atmosphere. In addition, it also helps to reduce the noise caused by the high speed flow of these gases. The air intake system works in conjunction with the exhaust system in the turbocharged engines to pull the fresh air through the filters to the cylinders. The air filters must be maintained clean and the air going through them to the engine should have as much as possible the same ambient temperature. 

What you should pay attention to is that the exhaust system must be designed to keep the resistance to exhaust flow through the system as low as possible and within the limits specified for a particular engine.

After learning the function of air intake system and exhaust system, now let's turn to know about its main components. The main parts are as follows:

1. Turbocharger (both hot and cold parts)
2. Muffler (Silencer)
3. Air filters
4. Pipes (elbows, flexible and tail pipes)

Turbocharger

As soon as the hot combustion gases leave the engine cylinder and accumulate in the exhaust manifold, the first major part of the exhaust system the gases go through is the turbocharger.

The turbocharger consists of two turbines on one shaft. The first turbine known as the hot gases going through it. The combustion gases have high pressure and high speed enough to produce a torque to drive this turbine to a very high speed. The high speed rotation of the hot turbine causes the other turbine to rotate as well. However, the second turbine is called  the cold turbine. It is completely isolated from the hot turbine and installed in different housing.

Muffler

Please note that a large part of the noise in the diesel generator sets is caused by engine's exhaust system. This noise is produced when high pressure gases intermittently leave the engine cylinders and set up vibrations in the exhaust gas flow which travel at high speed to the atmosphere.

Hope it is useful for users.

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