Function of Turbocharger in Diesel Engine?

May 3, 2022 6:31 pm Published by Leave your thoughts


In the past, diesel was known for its hefty weight and sluggishness. If turbocharged, diesel engines may compete with gasoline engines of the same displacement. The difference between a turbocharged diesel engine and a regular, ordinarily aspirated gasoline engine is the compressed air entering the diesel engine before fuel injection. At this point, turbochargers play a significant role in diesel engine power and efficiency. This is how a 

The turbocharger compresses the air that enters the cylinders of the engine. As air is compressed, oxygen molecules become more tightly packed together. A naturally aspirated engine with the same displacement might use more gasoline if it has more air flowing through it. Because of this, mechanical power is increased, and combustion efficiency is improved. Smaller engines, better packaging, and weight reductions are all made possible by turbocharged motors, contributing to a higher fuel economy.

A turbocharger’s two fundamental components are the turbine and compressor. The turbine housing and the turbine wheel are the two most important components to know about in a wind turbine. The turbine housing funnels exhaust gas into the turbine wheel. Energy from the exhaust gas is used to power the turbine wheel to remove the exhaust gas so it doesn’t build up.

The compressor has two parts: the wheel and the housing. In contrast to the turbine, the compressor works entirely differently. Using a forged steel shaft, the compressor wheel is spun rapidly by the turbine, drawing in air and compressing it. An air stream with high velocity and low pressure is dispersed into a lower velocity and more increased pressure air stream by the housing of a compressor. Engines that use a compressed air can burn more fuel, which results in greater power.

It is the amount of fuel that can be burned and the amount of air drawn into the engine that sets the upper power limit. It needs a 14.7 air-to-fuel ratio to ignite and burn fuel successfully in a standard internal combustion engine. Air is the limiting factor. Increased power may be achieved by using a turbocharger.

Utilizing new technologies, up to 50% more horsepower and 42% more thermal efficiency may be achieved. More energy is taken from the fuel to make a more powerful engine at a lower price to own.

Compared to other diesel and gasoline engines, this one can tow more weight. Turbocharged engines are great for agricultural equipment and vehicles because they can carry weight and work in rugged terrain.

Turbocharging allows manufacturers to reduce engine size while still retaining power and performance, better for the environment. The emissions of greenhouse gases from smaller engines are lower than those from bigger ones.

A non-turbo diesel engine draws in the same amount of air as a gasoline engine for each crankshaft revolution. This may be done by changing how much gas is put in since more gas equals greater power. Only with sufficient air can fuel be burnt to a complete state of depletion. Soot is a sign of unburned energy, and as a consequence, efficiency is reduced.

It is necessary to raise air pressure above ambient levels to increase air volume in an engine’s cylinders. One way to get a steady supply of compressed air into an engine is to use a mechanical supercharger. However, compressor efficiency may be improved by driving it with an exhaust-stream turbine.

Exhaust gas pressure has a significant impact on turbocharger pressure generation. When there is less exhaust gas at low loads, the turbocharger slows down and generates less pressure. Increased efficiency is achieved by avoiding the needless generation of air pressure.

Even greater efficiency may be achieved with the addition of an intercooler. Compressing the air raises its warmth. This is a physical property of compressed gases. An intercooler uses a heat exchanger to cool the intake air. Because colder air is denser, you can cram more air into a smaller area while exerting the same amount of effort. As a result, turbochargers have less work since they may reduce boost pressure without compromising performance. It boosts fuel efficiency by lowering exhaust backpressure.

Turbochargers are a must-have if you want your vehicle to have the power you want. Turbochargers increase your engine’s performance by providing a small amount of additional energy via forced induction. In Oklahoma City, our team at Thompson Diesel can assist you in repairing your old turbocharger, so it performs like new once again.


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