Diesel engines work by injecting a fine spray of fuel into the combustion chamber of the engine. The fuel is then compressed by the piston, which causes it to heat up and ignite. The expanding gases from the combustion of the fuel then drive the piston down, creating power.
Diesel engines are typically more efficient than gasoline engines because they are able to burn fuel more completely. This is due to the fact that diesel fuel is denser than gasoline and has a higher energy content. Diesel engines also typically have a higher compression ratio than gasoline engines, which further increases efficiency.
In addition to improved efficiency, diesel engines can also produce more torque at lower rpms than gasoline engines. This makes them well-suited for use in commercial vehicles, which often require low-end torque for hauling heavy loads. However, diesel engines can also be louder and produce more vibrations than gasoline engines.
Overall, diesel engines offer a number of advantages over gasoline engines, including improved efficiency, increased torque, and better fuel economy. However, they can also be louder and produce more vibrations.