Control method for engine cooling system

A technology of engine cooling and engine coolant, which is applied in the direction of engine cooling, coolant flow control, engine components, etc., can solve problems that are not reflected, and achieve the effect of reducing temperature distribution differences and improving water temperature fluctuations

Inactive Publication Date: 2020-08-25
汉腾新能源汽车科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, none of the existing technologies shows how to intelligently and accurately control the flow ratio of the small cycle and the large cycle to meet the temperature requirements of the engine under different operating conditions

Method used

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  • Control method for engine cooling system

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0019] The invention provides a control method of an engine cooling system, which can be based on the existing fuel vehicle engine cooling system or electric vehicle engine cooling system.

[0020] In order to facilitate the understanding of the present invention, a control method based on the existing fuel vehicle engine cooling system is now provided. The structural diagram of the fuel vehicle engine cooling system based on the control method is as follows: figure 1 As shown, it includes water pump 1, engine water jacket 2, thermostat 3, radiator 4, electronic fan 5, heat exchanger 6, engine management system 7, water temperature sensor I8 and water temperature sensor II9. Among them, the engine water jacket 2 includes a cast water jacket arranged on the body and the cylinder head, which can absorb the heat of the body and cylinder head thro...

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Abstract

The invention provides a control method for an engine cooling system. The control method for the engine cooling system includes the following steps that the temperature distribution of all test pointswhen an engine is in the best state under different work conditions is calibrated and made into a MAP chart to be stored in an engine management system; the relationship of the inlet temperature andoutlet temperature of engine cooling liquid and the temperature of all the test points of the engine under a certain work condition is calibrated and made into a MAP chart to be stored in the engine management system; the relationship of the power of an electric fan, the opening degree of a thermostat, and the inlet temperature and outlet temperature of engine cooling liquid under the same work condition is calibrated and made into a MAP chart to be stored in the engine management system; the engine management system builds intelligent cooling control strategies under different work conditionsaccording to the stored MAP charts; and the engine management system controls the inlet temperature and outlet temperature of the engine cooling liquid, the power of the electronic fan and the opening degree of the thermostat according to the intelligent cooling control strategies. The control method for the engine cooling system can lower the temperature distribution and water temperature fluctuation of all the test points of the engine.

Description

technical field [0001] The invention belongs to the technical field of engine cooling systems, and in particular relates to a control method for an engine cooling system. Background technique [0002] In order to ensure that the engine remains within a suitable temperature range under all operating conditions, most engines are designed with a cooling system. The engine cooling system is usually composed of water tank, fan, radiator, water pump, water pipe, body and cylinder head water jacket, thermostat, temperature sensor, etc. Since the temperature of the coolant is low when the engine is cold started, if the coolant is cooled by the radiator and then returned to the engine, the temperature of the coolant will rise very slowly. In order to shorten the time for the coolant temperature to rise to the set temperature, the cooling system includes two circuits, a large circulation and a small circulation, and the selection switch of the two circuits is a thermostat, that is, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P7/04F01P7/08F01P7/16
CPCF01P7/04F01P7/08F01P7/16
Inventor 王世强宁予潘世林李世明阎全忠
Owner 汉腾新能源汽车科技有限公司
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