What is the function of the start-stop system?
2 Answers
The function of the start-stop system: By installing an enhanced motor with idle start-stop function on a traditional engine, the car can completely shut down the engine when it meets the conditions for idling and parking. When the vehicle needs to start moving again, the idle start-stop motor system quickly responds to the driver's start command, rapidly starts the engine, and instantly connects, thereby greatly reducing exhaust emissions. The working principle of the start-stop system: When the vehicle stops moving due to traffic congestion or at an intersection, the driver can press the brake pedal and shift to neutral. At this time, the Start system automatically detects whether the engine is idling and not in gear, the wheel speed sensor of the anti-lock system shows zero, and the electronic battery sensor shows sufficient energy for restarting. Once these conditions are met, the engine will automatically stop rotating. When the traffic light turns green, the driver can press the clutch to activate the 'start-stop device.' In automatic transmission models, once the brake is released or the steering wheel is turned, the engine will immediately restart automatically, with the entire process remaining in D gear.
The start-stop function is quite fuel-efficient, especially practical in city traffic jams. When waiting at a red light for a slightly longer time, the engine automatically shuts off, avoiding unnecessary fuel consumption. In the past, driving my old car at idle for an hour would consume over 1 liter of fuel, but now with start-stop, waiting at red lights basically uses zero fuel. Even in summer with the air conditioning on, there's no need to worry—the blower still works after the engine shuts off, though cooling weakens a bit, but red lights usually last only tens of seconds, so the impact is minimal. Over the long term, it saves several hundred yuan in fuel costs annually, which is friendly to both the wallet and the environment.
