Why is a turbocharger used in diesel engines?

A turbocharger is an important component in diesel engines primarily because it increases engine efficiency and power output. By forcing more air into the combustion chamber, the turbocharger enables the engine to burn more fuel effectively. This results in a more efficient combustion process which enhances the overall performance of the engine.

With the increase in air intake, the turbocharger allows for greater fuel combustion, leading to improved power generation without requiring a larger engine size. This efficiency is especially critical in diesel engines, which rely on the combustion of highly compressed air to ignite the fuel. Consequently, the turbocharger not only boosts power but also enhances the torque output, providing better performance characteristics under heavy loads.

While reducing emissions and improving fuel efficiency are also essential aspects of modern engine design, the primary function of the turbocharger is its ability to increase power output, making it a crucial component for achieving better engine performance in diesel applications.