What is the lightning fault phenomenon on a car?

[DiCharlotte]

Fault phenomenon: Difficulty starting the engine when cold in the morning or unstable engine operation after starting, which may be accompanied by stalling or the pollution warning light turning on. Sometimes after stalling and restarting, the engine shaking and pollution warning light disappear; other times after restarting, the engine shaking is normal but the pollution warning light remains on. Principle of the fault occurrence: Basic principle: The process of converting chemical energy into mechanical energy is a reaction of thermal energy. Extension: Analysis of the reasons for the engine fault light turning on: When the engine starts cold, components such as the cylinder walls are cold metal parts. As the engine operates, the fuel injected by the injectors atomizes in the cylinders. The atomized mixture condenses on the cold cylinder walls, which is not conducive to engine ignition and combustion.