Control method and device for electronic control silicone oil fan, electronic control silicone oil fan and engine

Abstract

The invention provides a control method and device for an electronic control silicone oil fan, the electronic control silicone oil fan and an engine. According to the control method, the altitude at which the engine works is obtained, the target rotation speed of the electronic control silicon oil fan installed on the engine is calculated based on the altitude, and then the rotation speed of the electronic control silicone oil fan is adjusted to the target rotation speed. According to the control method and device, the different air discharge qualities, caused by the change of the atmospheric pressure, of the fan, at different altitudes, corresponding to the same emitted heat are considered, the air discharge qualities of the electronic control silicone oil fan at different altitudes are controlled by adjusting the rotation speed of the fan based on the change of the atmospheric pressure, so that it is guaranteed the heat emitted by the electronic control silicone oil fan at different altitudes reaches a set value, and therefore it is guaranteed that the water discharge temperature of a cooling system of the engine is stable.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation control, and in particular relates to a control method and device for an electronically controlled silicon oil fan, an electronically controlled silicon oil fan and an engine. Background technique [0002] The electronically controlled silicone oil fan is to change the part of the ordinary silicone oil fan that senses the air temperature into an electrical control, collect and analyze the engine water temperature and other signals through the ECU, control the opening and closing of the solenoid valve oil inlet inside the electronically controlled silicone oil clutch, and then control the fan speed. When the engine coolant temperature is low, the fan is in a free state, and when the coolant temperature is high, the fan speed is high and close to a rigid connection. [0003] The existing electronically controlled silicon oil fan monitors the engine outlet water temperature and other tempera...

AI Technical Summary

Problems solved by technology

However, due to the hysteresis effect of the change of the engine water temperature and the acquisition of the control signal, the temperature of the engine outlet water may have changed at this time (for example, 93°C). It can be seen that this method of controlling the action of the fan through the water temperature signal cannot accurately control the heat dissipation.

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