Electric control signal reflection fan clutch

Abstract

The invention relates to an electric control signal reflection fan clutch which comprises a driving shaft, a shell, a driving plate, a follower plate, a photoelectric induction type fan speed test component and a central processing unit, wherein the shell is installed on the driving shaft through a bearing; the driving plate is fixed on the driving shaft; the follower plate is fixed on an end cover; the fan is installed on the follower plate; the end cover and the shell are fixed integrally; an oil storing cavity and a working cavity are arranged between the end cover and the shell; the oil storing cavity and the working cavity are communicated by an oil inlet and an oil return hole; the oil inlet is controlled by an electromagnetic control switch to be opened and closed; the photoelectric induction type fan rotate speed test component tests the fan rotate speed; and the central processing unit receives the test signals. The fan rotate speed test component with the structure is unaffected by the magnetic field of an electromagnetic switch, and has accurate speed measuring, energy saving and environmental protection.

Description

technical field [0001] The invention relates to a silicon oil fan clutch, in particular to a silicon oil fan clutch controlled by an electric control signal. Background technique [0002] The silicone oil fan clutch uses silicone oil as a medium to transmit torque by utilizing the high viscosity of silicone oil. Using the temperature of the air behind the radiator, the disengagement and engagement of the fan clutch is automatically controlled by a temperature sensor. When the temperature is low, the silicone oil does not flow, the fan clutch disengages, and the fan speed slows down, basically idling. When the temperature is high, the viscosity of the silicone oil makes the fan clutch engage, so the fan and the water pump shaft rotate together to regulate the temperature of the engine. [0003] The disadvantage of this kind of silicon oil fan clutch that is only adjusted by a temperature sensor is that when the fan speed reaches a certain speed and the temperature drops bel...

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is: because the electromagnetic control valve switch assembly contains a magnetic coil, and the Hall principle adopted by the fan speed measurement assembly also contains a permanent magnet, when the speed is measured, the strong magnetic field generated by the energized magnetic coil will It has a certain impact on the magnetic field signal received by the Hall element, causing the magnetic signal received by it to weaken, and the Hall element cannot receive the normal magnetic signal, resulting in inaccurate measured speed, and the speed signal data output to the central processor Mistakes lead to a delay in the adjustment of the central processing unit or no adjustment at all, consuming excess energy of the engine, which is not conducive to energy saving and environmental protection

Images