What is the meaning of auto start-stop in cars?

1 Answers
RyanDella
07/29/25 6:10pm
Auto start-stop is a system that automatically shuts off the engine when the vehicle comes to a temporary stop during driving and restarts the engine when it's time to move forward again. The working principle of the auto start-stop system: when the vehicle stops due to traffic congestion, the driver presses the brake pedal to stop and shift into neutral. At this point, the system automatically detects that the engine is idling and not in gear, and the wheel speed sensors of the anti-lock system show zero, causing the engine to automatically stop rotating. The core of auto start-stop lies in automatically controlling engine shutdown and restart, while reducing unnecessary fuel consumption, lowering emissions, and improving fuel economy. This feature is mainly suitable for urban traffic situations like waiting at traffic lights or during traffic jams, as it minimizes engine idling time. Additionally, after the engine shuts off, the vehicle's electrical system can replace the belt-driven power to operate the engine cooling fan and air conditioning system.
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