What was the power source used in the initial development of modern automobiles?

[LaGemma]

The power source used in the initial development of modern automobiles was the steam engine. Here are the relevant details: 1. Steam Engine: A steam engine is a reciprocating power machine that converts the energy of steam into mechanical work. The emergence of steam engines triggered the Industrial Revolution in the 18th century. Until the early 20th century, it remained the most important prime mover in the world, later gradually being replaced by internal combustion engines and steam turbines. A steam engine requires a boiler to boil water and generate high-pressure steam. Through the combustion process, water is boiled into steam, which then expands to push the piston and perform work. 2. Engine Power: The strength of a car's power mainly depends on the engine power it is equipped with. The greater the power, the stronger the performance. The work done by the engine per unit of time is called the engine's power. A higher engine power indicates more abundant power reserves, resulting in better performance, mainly reflected in acceleration and climbing capabilities.