What does the auto start-stop function in cars mean?

[McSteven]

The auto start-stop function in cars refers to a system that automatically shuts off the engine when the vehicle comes to a temporary stop (such as at a red light) and automatically restarts the engine when it's time to move forward again. The core of this system lies in its ability to automatically control engine shutdown and restart, thereby reducing unnecessary fuel consumption, lowering emissions, and improving fuel economy. The auto start-stop function is primarily designed for urban traffic situations, such as waiting at traffic signals or during traffic jams, to minimize engine idling time. Additionally, when the engine is shut off, the vehicle's electrical system can take over to power the engine cooling fan and the air conditioning system, replacing the traditional belt-driven mechanism.