What is the source of automobile power?

The source of automobile power is the engine, which comes from the inside of the cylinder, and the engine cylinder is where the internal energy of fuel is converted into kinetic energy. It can be simply understood that the combustion of fuel in the cylinder produces great pressure, which pushes the piston to move up and down, and the force is transmitted to the crankshaft through the connecting rod, which is finally transformed into rotary motion, and then the power is transmitted to the driving wheel through the transmission and transmission shaft, thus pushing the car forward.