How do diesel engines work?

Have you ever looked at vehicles pass by and wondered how a small amount of liquid fuel can run such massive automobiles? Is it not remarkable that diesel engines power heavy vehicles like trucks, trains, and tractors? Well, this is possible because of a rather simple but amazing scientific principle that was established by Rudolf Diesel in 1893. In a diesel engine, the air is compressed to a sufficiently high temperature to ignite the diesel fuel injected into the cylinder. The resulting combustion and expansion get the piston moving. Hence, the chemical energy stored in the fuel converts into mechanical energy and powers vehicles. https://www.atracparts.com/blog/how-do-diesel-engines-work/