A method and device for adjusting the switching frequency of a fan
An adjustment method and a technology of switching times, which are applied in engine cooling, coolant flow control, machine/engine, etc., can solve problems such as increased fuel consumption and reduced fan reliability, and achieve high reliability and long service life.
Active Publication Date: 2021-03-16
WEICHAI POWER CO LTD
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Problems solved by technology
After a period of time, when it is detected that the temperature of the cooling liquid drops to the shutdown temperature of the fan, the fan is turned off to avoid the fan running for a long time to increase fuel consumption; but the existing control logic will lead to a decrease in the reliability of the fan
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[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] As mentioned in the background, the main task of the engine cooling system is to ensure that the engine works at an appropriate temperature, that is, it is neither too cold nor too hot during operation.
[0049] The engine cooling system usually takes the form of a fan to cool the engine. In its control logic, it is necessary to set the opening temperature and closing temperature of the fan. When it is detected that the temperature of the ...
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The invention provides a method and device for adjusting the switching frequency of a fan. The method comprises the following steps: acquiring a design switching frequency and an actual switching frequency of the fan; judging that the difference value of the actual switching frequency minus the design switching frequency is outside an adjusting interval range [preset difference value, 0]; and adjusting the starting temperature and / or the stopping temperature of the fan to enable the difference value of the actual switching frequency minus the design switching frequency to be within the adjusting interval range. According to the technical scheme, by monitoring the actual switching frequency of the fan in real time and dynamically adjusting the starting temperature and / or the stopping temperature of the fan, the difference value of the actual switching frequency minus the design switching frequency is located in the adjusting interval range, so that the actual switching frequency of thefan approaches to the design switching frequency, it is ensured that the fan does not consume excessive oil, meanwhile, the long service life of the fan is ensured, and the high reliability of the fanis ensured.
Description
technical field [0001] The invention relates to the field of engine cooling, in particular to a method and device for adjusting switching frequency of a fan. Background technique [0002] The main task of the engine cooling system is to ensure that the engine works at a suitable temperature, that is, it is neither too cold nor too hot during operation. [0003] The engine cooling system usually takes the form of a fan to cool the engine. In its control logic, it is necessary to set the opening temperature and closing temperature of the fan, and when it is detected that the temperature of the cooling liquid rises to the opening temperature of the fan, the fan is turned on to cool down the cooling liquid. After a period of time, when it is detected that the temperature of the cooling liquid drops to the shutdown temperature of the fan, the fan is turned off to avoid the fan running for a long time to increase fuel consumption; however, the existing control logic will lead to ...
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IPC IPC(8): F01P7/08
CPCF01P7/08
Inventor 朱江苏王继磊姚泽光赵伟侯健鹏刘刚
Owner WEICHAI POWER CO LTD