What does active grille shutter mean?

[MacAiden]

Active grille shutter refers to an air intake grille that can automatically adjust its opening degree. Here are some additional details: 1. After starting the vehicle, the active grille shutter automatically adjusts its opening based on the engine temperature, achieving rapid warm-up effects. This allows the engine to reach its optimal operating state in the shortest time possible, especially during cold winters. Faster warm-up also means passengers can enjoy warm air sooner. Temperature significantly impacts engine performance, and the engine operates most fuel-efficiently at its optimal working temperature. Therefore, accelerating the engine's transition to its ideal operating temperature in cold conditions indirectly improves fuel economy. 2. When driving at high speeds, excessively open windows increase wind resistance, burdening the vehicle. As the car's 'front gate,' if the air intake grille remains wide open, it will inevitably increase wind resistance and fuel consumption. Timely closure of the grille results in a lower drag coefficient, enhancing both vehicle stability and fuel efficiency.