What is the reason for loosening the throttle and patting the exhaust pipe after emergency refueling?

When the accelerator is released after the emergency refueling door, the exhaust pipe will burst because it meets fresh air in the muffler and re-burns, indicating that the concentration of combustible vehicles is relatively strong and generally has little impact. The throttle of an automobile is a control device used to control the engine power. In the use of automobile engine, the throttle valve controls the opening of the throttle valve of automobile engine, thus controlling the output power of the engine. The driver controls the throttle in the cockpit and the fuel regulator of the car. The accelerator pedal, also known as the accelerator pedal, is a part of the automobile fuel supply system. The throttle opening of the engine is controlled by controlling the stepping amount of the accelerator pedal, so as to control the air intake of the engine. The driving computer controls the fuel quantity, so as to control the engine speed to control the vehicle speed, and the driver increases or decreases the throttle according to the road conditions and actual needs. Million car purchase subsidy