Engine heat dissipating control method and device and electromagnetic clutch

Abstract

The invention discloses an engine heat dissipating control method and device and an electromagnetic clutch. The method comprises the steps of detecting water temperature of an engine; determining whether the detected water temperature is within the water temperature threshold range of work at the first gear; if so, driving the electromagnetic clutch to work at the first gear; if not so, determining whether the detected water temperature is within the water temperature threshold range of work at the second gear; if so, driving the electromagnetic clutch to work at the second gear; and if the detected water temperature meets the water temperature threshold range of work at the third gear and the detected rotating speed of the engine meets the rotating speed range of work at the third gear, driving the electromagnetic clutch to work at the third gear. With the adoption of the method, the demands of the engine on heat dissipating capacity under various rotating speeds can be met; and meanwhile, the input cost is decreased.

Description

technical field [0001] The invention relates to the technical field of heat dissipation, in particular to an engine heat dissipation control method, device and electromagnetic clutch. Background technique [0002] For some engines with high torque and rotating speed, limited by the reliability of the wheel train, and the cooling capacity of the vehicle system is low under high torque conditions, the following methods are usually used to improve the heat dissipation of the engine. [0003] The first is to increase the diameter of the engine fan to increase the air volume and improve heat dissipation; the second is to increase the engine speed ratio, that is, to increase the fan speed ratio to increase the fan speed to improve the cooling capacity at the speed; the third is to increase the cooling capacity of the vehicle. The heat dissipation capacity of the device; the fourth is to use high-efficiency fans to improve heat dissipation. [0004] There are certain defects in th...

AI Technical Summary

Problems solved by technology

[0004] There are certain defects in the above-mentioned schemes. For example, when increasing the fan diameter, the fan diameter is limited by the structure of the cab of the vehicle, so it cannot be installed if it is too large; Larger, the parts on the corresponding gear train such as water pumps, tensioners, fan brackets and other rotating parts will be stressed and the failure rate will be higher; Car layout requirements will increase the cost; when using high-efficiency fans, it is necessary to introduce foreign technology or product costs are high

It can be seen that the existing technology can no longer meet the heat dissipation requirements of the engine at high torque and low speed

Images