Why does white smoke appear for a few seconds when starting the car and then disappear?

[SamuelAnn]

It is normal for white smoke to appear during cold starts, especially during low-temperature engine starts, and then disappear as the engine temperature rises. Below is an introduction to engines: Introduction: An engine (Engine) is a machine that can convert other forms of energy into mechanical energy. The first external combustion engine was invented by R. Stirling in the UK (Scotland) in 1816 and later improved by Watt into a steam engine. Applicability: Engines can be used as power generation devices or refer to the entire machine including the power unit (e.g., gasoline engines, aircraft engines). Types: Types include internal combustion engines (such as gasoline engines), external combustion engines (such as Stirling engines, steam engines), gas turbines (used in racing cars), electric motors, etc.