Air-fuel ratio correction method, device and equipment and storage medium

The invention belongs to the technical field of vehicle control, and discloses an air-fuel ratio correction method, device and equipment and a storage medium. A nitrogen-oxygen sensor is connected to the rear end of a catalytic converter of a vehicle, and the engine rotating speed and the air flow of a vehicle engine at the current moment are obtained; searching a corresponding nitrogen and oxygen correction value in a correction parameter table corresponding to the nitrogen and oxygen sensor according to the rotating speed of the engine and the air flow; and correcting the air-fuel ratio of the vehicle according to the nitrogen-oxygen correction value. Due to the fact that the nitrogen-oxygen sensor is arranged behind the air-fuel ratio sensor and the catalytic converter to replace a rear oxygen sensor to conduct air-fuel ratio correction, full-time-domain correction is achieved, and control over pollutants during emission is better facilitated. 本发明属于车辆控制技术领域，公开了一种空燃比修正方法、装置、设备及存储介质。本发明在车辆的催化器后端连接氮氧传感器，并通过获取