Methods, devices, and vehicles for controlling the aerodynamic coefficient of engines.

Abstract

This application provides a method, device, and vehicle for controlling the air coefficient of an engine. The method includes: acquiring the exhaust gas nitrogen oxide content at multiple first acquisition times within a first current timing period to obtain a first exhaust gas nitrogen oxide content set; calculating multiple first exhaust gas nitrogen oxide content change rates based on the first exhaust gas nitrogen oxide content set; deleting exhaust gas nitrogen oxide contents from the first exhaust gas nitrogen oxide content set whose first exhaust gas nitrogen oxide content change rates are greater than a first change rate threshold and less than a second change rate threshold to obtain a first exhaust gas nitrogen oxide content correction set; performing an integral operation on the exhaust gas nitrogen oxide content in the first exhaust gas nitrogen oxide content correction set to obtain a first nitrogen oxide specific emission; and reducing the target value of the air coefficient when the first nitrogen oxide specific emission is greater than the first specific emission threshold, thereby solving the problem of non-compliance with emission standards caused by inaccurate nitrogen oxide content detection in existing control methods.

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