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Engine cooling system control method and system and vehicle

A cooling system control and cooling system technology, which is applied in the direction of engine cooling, coolant flow control, engine components, etc., can solve the problems that the engine water temperature cannot be adjusted quickly, the engine water temperature has a large hysteresis, and affects engine fuel consumption and emissions. , to achieve fast and accurate control

Active Publication Date: 2018-02-06
GREAT WALL MOTOR CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, in the current control method, the intelligent cooling system has a large hysteresis in adjusting the engine water temperature, which cannot achieve accurate and rapid adjustment of the engine water temperature, which in turn will affect the fuel consumption and emissions of the engine.

Method used

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  • Engine cooling system control method and system and vehicle
  • Engine cooling system control method and system and vehicle
  • Engine cooling system control method and system and vehicle

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0033] figure 1 is a flowchart of a method for controlling the cooling system of an engine according to an embodiment of the present invention.

[0034] Before describing the control method of the vehicle in the embodiment of the present invention, the cooling system is first described. The cooling system is also called an intelligent cooling system or an intelligent thermal management system. The cooling system includes a ball valve (such as an electronic ball valve) for adjusting the water temperature. The system also includes thermal management modules, water jackets, radiators, electronic fans, water pumps, compensation water tanks, and external components of the intelligent cooling...

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Abstract

The invention provides an engine cooling system control method and system and a vehicle. The control method comprises the steps of acquiring the actual water temperature, rotating speed and load of anengine, determining the target water temperature of the engine according to the rotating speed and the load of the engine, calculating the deviation value of this time between the target water temperature and the actual water temperature and obtaining the deviation change rate according to the deviation value of this time and the deviation time of last time, obtaining a feed-forward signal used for adjusting the opening degree of a ball valve according to the target water temperature, determining a proportional plus integral control feedback signal for adjusting the opening degree of the ballvalve according to the deviation value of this time and the deviation change rate, obtaining an opening degree adjusting signal according to the feed-forward signal and the feedback signal and adjusting the opening degree of the ball valve according to the opening degree adjusting signal. By means of the engine cooling system control method, rapid and accurate control over the water temperature of the engine can be realized; and accordingly, the performance of the engine is improved, and duel consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an engine cooling system control method, system and vehicle. Background technique [0002] The traditional cooling system is composed of oil cooling system, supercharger cooling system, transmission oil cooling system, warm air system, engine body cooling system, etc. These systems are bounded by each other and coupled with each other, so it is difficult to establish an accurate mathematical model. Therefore, it is difficult to meet the most suitable working temperature requirements of the engine under different working conditions, and the fuel consumption and emission of the engine are poor. [0003] The intelligent cooling system can accelerate warm-up, improve engine performance, and reduce vehicle fuel consumption, etc. However, in the current control method, the intelligent cooling system has a large hysteresis in adjusting the engine water temperature, which cannot ach...

Claims

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Application Information

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IPC IPC(8): F01P7/16
CPCF01P7/167F01P2007/146
Inventor 刘逢孟祥程胡洪涛刘俊杰魏云腾葛双亮
Owner GREAT WALL MOTOR CO LTD
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