A major difference between a turbo diesel engine and its naturally aspirated counterpart is the increase in power that is derived from a turbocharger. This results from an increase in the amount of air being forced into the cylinder during the air intake phase of the four stroke cycle.
The mining, maritime and auto industries are some of the entities that utilize the use of turbocharged engine and top quality garrett turbo. They are also widely used on trains, electrical power generation and on heavy duty machinery's. They are considered to be efficient, reliable and versatile.
The four strokes of the cycle are induction, compression, power and exhaust. The turbocharger is driven by waste gas exiting the engine. Volumetric efficiency is achieved when the intake air is compressed by the turbocharger. This forces a greater volume of air into the cylinder during the induction stroke.
The turbocharger consists of a turbine and a compressor, both in separate housing. However, both are connected to the same shaft which rotates freely. The turbine side is connected to the exhaust manifold, while the compressor side is connected to the intake air manifold. The exhaust gas upon exiting the cylinder flows through the turbine housing and in so doing drives the turbines.
On the other hand, the compressor side of this unit is connected to the intake manifold and is driven by the turbine. This allows for the air to be compressed, which is then force into the cylinder as soon as the intake valves are opened. A naturally aspirated engine relies on the pistons' downward action for a fresh charge of air.
Exhaust emission is said to be reduced with the recycling of exhaust gases. More exhaust gas is release into the atmosphere by the turbo diesel engine and Borg Warner Turbo by Denco Diesel. However, it is believed that gasoline engine releases more carbon dioxide. The noise created by vibration and also piston slap is contained hence a much quieter engine.
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