Air inlet grille control method and device and engine management system

Abstract

The invention relates to an air inlet grille control method and device and an engine management system. The air inlet grille control method comprises the steps that the current operation conditions of a vehicle are obtained, wherein the current operation conditions comprise the first current temperature of cooling liquid, the current vehicle speed, the current duty ratio of a pulse width modulation fan, the current on-off status of a fan and the current exhaust temperature; the target opening degree of an air inlet grille is determined according to the obtained current operation conditions of the vehicle and the unit angle, wherein the unit angle is the angle of each preset equally-divided part of the included angle between the minimum position when a motor is turned off and the maximum position when the motor is turned on; and the determined target opening degree of the air inlet grille is sent to the motor so as to enable the motor to adjust the opening degree of the air inlet grille according the received target opening degree. By adoption of the air inlet grille control method and device and the engine management system, the dynamic property and the fuel economy performance of the whole vehicle can be improved, and carbon emission is reduced.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a control method, device and engine management system for an air intake grille. Background technique [0002] The air intake grille is also known as the front face of the car, the ghost face and the water tank shield. The air intake grille is an important part of the front shape of the car, which affects the design style of the whole vehicle. It is also used for the intake and ventilation of the water tank, engine and air conditioner, so as to prevent the damage of foreign objects to the internal parts of the car during driving and to show its beauty. personality. [0003] With the continuous rise of oil prices, fuel saving has become a common topic in the current automobile industry and car consumers, and various fuel saving technologies are also emerging in an endless stream and are constantly being improved. There are many factors that affect the fuel economy of a car, s...

AI Technical Summary

Problems solved by technology

However, in the traditional technology, the opening of the air intake grille of the vehicle is generally fixed, and there are defects such as high fuel consumption and low fuel economy of the vehicle.

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