Grating control method and device

A control method and grille technology, applied in the direction of power unit, cooling combination arrangement, transportation and packaging of the power unit, can solve the problems of high fuel consumption and large wind resistance coefficient of vehicles, and achieve the goal of reducing system fuel consumption and wind resistance coefficient Effect

Active Publication Date: 2015-10-14
SAIC MOTOR
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  • Abstract
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Problems solved by technology

[0005] In the prior art, when heat is dissipated through the grille intake of the vehicle to meet the cooling requ

Method used

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Embodiment Construction

[0034] When the car is running, the outside air of the car enters the engine compartment through the grille to cool the radiator in the engine cooling system to ensure the normal operation of the engine cooling system. The grilles of vehicles are usually designed with different appearances. , The opening of the grille usually only has two states of opening and closing. On some high-end cars, the opening of the grille can be automatically opened or closed according to the engine temperature and the pressure of the vehicle's air conditioning system.

[0035] However, in the prior art, the vehicle speed is not considered when the cooling system is realized by opening or closing the grille. In fact, when the vehicle speed is fast, if the grille is opened, although the effect of heat dissipation can be achieved, But this will also lead to a higher drag coefficient of the vehicle. When the speed of the vehicle is fast, it is the best time to reduce the drag coefficient through the c...

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Abstract

A grating control method and device is provided; the method comprises the following steps: obtaining present vehicle speed; determining grating opening degree according to the vehicle speed when conditions are satisfied and the vehicle speed is higher than or equal to a first threshold value; adjusting the grating according to the determined grating opening degree. The conditions comprise: a cooling fan is closed; the temperature of a cooling liquid of an engine is lower than or equal to a first temperature threshold; the temperature of lubricating oil of the engine is lower than or equal to a second temperature threshold; an exhaust pressure of an air-conditioning compressor is lower than or equal to a pressure threshold. The method allows air inlet of grating of passing vehicle to meet the demand of a cooling system, fully considers vehicle speed and cooling fan on/off condition, engine cooling liquid temperature, engine lubricating oil temperature and air-conditioning compressor exhaust pressure, thus determining grating opening degree, and adjusting the grating according to the determined grating opening degree; the method can control the grating opening degree according to the vehicle speed, thus effectively reducing wind resistance coefficient, and reducing system oil consumption.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a grid control method and device. Background technique [0002] When the vehicle is running, the resistance to be overcome includes tire rolling resistance and air resistance. As the vehicle speed increases, the air resistance gradually increases. However, in order to ensure the effective cooling of the engine radiator, the front end of the vehicle needs to Set up the grill. When the car is running, the air outside the car enters the engine compartment through the grille to cool the radiator in the engine cooling system to ensure the normal operation of the engine cooling system. In the prior art, the grille of the vehicle is usually only designed with different appearances, and its main function is the intake and ventilation of the water tank, engine, air conditioner, etc., and the appearance shows individuality. [0003] There are many factors that affect the fuel consump...

Claims

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Application Information

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IPC IPC(8): B60K11/08
Inventor 张斌王磊潘乐燕余小松
Owner SAIC MOTOR
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