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Speed regulation method based on PID algorithm for engine cooling fan

A technology for engine cooling and engine coolant, which is applied to engine cooling, engine components, machines/engines, etc., and can solve problems such as coolant temperature fluctuations, increased energy consumption, and shortened service life.

Active Publication Date: 2017-02-01
张家港长安大学汽车工程研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems of this control method are: (1) The temperature of the coolant is always in a state of large fluctuations and cannot be kept stable; (2) The fan motor is continuously turned on and off, which will shorten its service life and increase energy consumption

Method used

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  • Speed regulation method based on PID algorithm for engine cooling fan
  • Speed regulation method based on PID algorithm for engine cooling fan
  • Speed regulation method based on PID algorithm for engine cooling fan

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Embodiment Construction

[0031] The present invention will be further described now in conjunction with accompanying drawing. These drawings are simplified schematic diagrams only to illustrate the basic structure of the present invention in a schematic way, so they only show the components relevant to the present invention.

[0032] like figure 1 , figure 2 , image 3 Shown, a kind of engine cooling fan speed regulation method based on PID algorithm is characterized in that: the cooling fan speed is controlled by the engine ECU control unit, has the steps as follows:

[0033] Step 1: When the car is running, the engine coolant temperature sensor transmits the temperature signal of the engine coolant to the engine ECU control unit;

[0034] Step 2: The temperature signal is transmitted to the PID controller through the output control signal of the engine ECU control unit;

[0035] Step 3: The PID controller regulates the speed of the drive motor according to the received control signal, the drive...

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Abstract

The invention relates to a speed regulation method based on the PID algorithm for an engine cooling fan. An electronic control unit (ECU) of an engine controls the rotation speed of the cooling fan. The method includes the steps that 1, in the running process of an automobile, a temperature sensor of engine coolants transmits temperature signals of the engine coolants to the ECU of the engine; 2, the temperature signals are processed by the ECU of the engine, and the ECU of the engine outputs control signals to a PID controller; and 3, the PID controller regulates the rotation speed of a drive motor according to the received control signals, the drive motor changes the rotation speed of the cooling fan, and a cooling fan sensor collects the rotation speed information of the cooling fan and feeds back the rotation speed information of the cooling fan to the ECU of the engine. According to the method, the speed of the cooling fan can be automatically regulated.

Description

technical field [0001] The invention relates to the technical field of automobile cooling, in particular to a speed regulation method of an engine cooling fan based on a PID algorithm. Background technique [0002] Small cars, especially small cars with air conditioning, generally use electric fans to force the water tank or condenser to be ventilated. At present, the electric fan is generally controlled by a one-stop two-position switch control method. When the temperature control switch installed on the water tank is used for control, when the water temperature is higher than the upper threshold, the temperature switch is turned on, and the fan runs at full speed; when the water temperature is lower than the lower threshold, the temperature switch is turned off, and the fan stops. The problems of this control method are: (1) the coolant temperature is always in a relatively large fluctuation state and cannot be kept stable; (2) the fan motor is continuously turned on and ...

Claims

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Application Information

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IPC IPC(8): F01P7/04F01P7/12F04D27/00
CPCF01P7/048F01P7/12F04D27/004
Inventor 韩毅涂市委许耀华樊晓楠薛诺诺
Owner 张家港长安大学汽车工程研究院
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