7 results about "Fan clutch" patented technology

This invention discloses an emergency engagement structure for a fan clutch, relating to the field of engine cooling technology. It addresses the problem in mechanical fans with clutches where leakage of transmission oil within the clutch causes the fan to lose power and stop, leading to diesel engine overheating and shutdown. The emergency engagement structure includes a drive shaft, a driven shaft, and an engagement unit. The drive shaft is connected to the engine, and the driven shaft is mounted on the fan. The drive shaft transmits rotation to the driven shaft and the fan via transmission oil. The engagement unit is located within the hollow portion of the driven shaft and serves to rigidly connect the driven shaft to the drive shaft. The actuator of the engagement unit is an electric actuator that pushes a cylindrical pin through a through-hole in the side wall of the driven shaft, abutting against the drive shaft. This achieves a rigid connection between the driven and drive shafts, allowing the fan to continue operating without relying on transmission oil and preventing diesel engine overheating.

The present application relates to a kind of based on test bench silicon oil fan clutch simulation model correction method, belong to vehicle thermal management simulation and parameter correction technical field.The method obtains the active end speed, fan speed, transmission torque and shell temperature in silicon oil fan clutch test bench test, and calculates test slip rate;Establish simulation model and set initial viscosity-temperature function, initial heat transfer coefficient and initial flow resistance coefficient;Simulation torque, simulation shell temperature and simulation slip rate are obtained by simulation;Simulation results are compared with test results, and torque error, temperature error and slip rate error are calculated;According to error result, viscosity-temperature function, heat transfer coefficient and flow resistance coefficient are iteratively corrected until error meets preset threshold, and the corrected simulation model is output.The method can improve the comprehensive prediction accuracy of silicon oil fan clutch simulation model to torque, temperature and slip rate.

This application relates to an engine cooling system and control method, belonging to the field of engine cooling technology. The system includes an engine with an exhaust manifold, a turbine, an intercooler, a main compressor, an intake manifold, a fan clutch, and a main cooling fan connected to the fan clutch. The exhaust manifold is connected to the turbine, the main compressor is coaxially connected to the turbine, and the main compressor is connected to the intercooler. The intercooler cools the compressed air from the main compressor before it is introduced into the intake manifold. The system also includes an electronic control unit (ECU), a secondary compressor coaxially connected to the turbine, and an air cooling device connected to the secondary compressor via cooling pipes. The air cooling device is installed on high-temperature components of the engine. A flow control valve is installed on the cooling pipes, and a temperature sensor is installed on the engine. The ECU is electrically connected to the fan clutch, the temperature sensor, and the flow control valve. This application can reduce the load on the main cooling fan and improve engine fuel economy.

The present application relates to a kind of based on test bench silicon oil fan clutch simulation model correction method, belong to vehicle thermal management simulation and parameter correction technical field.The method obtains the active end speed, fan speed, transmission torque and shell temperature in silicon oil fan clutch test bench test, and calculates test slip rate;Establish simulation model and set initial viscosity-temperature function, initial heat transfer coefficient and initial flow resistance coefficient;Simulation torque, simulation shell temperature and simulation slip rate are obtained by simulation;Simulation results are compared with test results, and torque error, temperature error and slip rate error are calculated;According to error result, viscosity-temperature function, heat transfer coefficient and flow resistance coefficient are iteratively corrected until error meets preset threshold, and the corrected simulation model is output.The method can improve the comprehensive prediction accuracy of silicon oil fan clutch simulation model to torque, temperature and slip rate.

The application relates to the technical field of shell surface treatment, and discloses a surface treatment equipment for a fan clutch aluminum alloy shell, which solves the problems that the force receiving structure of the moving pressing plate of the existing disclosed shell surface treatment device is unreasonable, the subsequent linkage structure is difficult to reset, and the subsequent device is inconvenient to use normally, four groups of hydraulic telescopic rods are fixedly installed at the upper surface of a flow guide groove, the four groups of hydraulic telescopic rods are communicated with an oil storage tank through a second hydraulic pipe and a first hydraulic pipe, an extrusion piston plate is movably arranged at the inner side of the upper end of the oil storage tank, the extrusion piston plate is pushed through a reverse U-shaped block, the four groups of hydraulic telescopic rods are synchronously and uniformly pushed to move the back-shaped pressing plate downward and horizontally, a liquid delivery pipe is connected to the bottom of the liquid storage tank body, liquid medicine is injected into the inner side of the liquid storage tank body through the liquid delivery pipe, and the structure is automatically reset for subsequent use.

The application provides a silicone oil fan clutch and an engine cooling system. The silicone oil fan clutch comprises a clutch body and a clutch speed ratio control mechanism. The body is provided with an oil storage cavity with an oil outlet hole and an oil return hole. The control mechanism comprises a temperature sensing driving element and a valve plate assembly. The valve plate assembly has first and second adjusting parts corresponding to the oil outlet hole and the oil return hole respectively. When the temperature rises, the first adjusting part is first driven to increase the opening degree of the oil outlet hole, and then the second adjusting part is driven to reduce the opening degree of the oil return hole to a preset minimum value. When the temperature decreases, the action sequence is reversed. The application breaks through the limitation of traditional control of only the oil outlet and fixed oil return. In the medium and low temperature zone, the fan rotating speed, energy consumption and noise are effectively reduced by adjusting the oil return. In the high temperature zone, the high clutch speed ratio and the heat dissipation reliability are ensured by cooperative control. The whole process is pure mechanical linkage, which is fast in response and reliable in structure, and realizes reasonable matching of the speed ratio and optimization of energy efficiency under all working conditions.

The present application relates to a kind of silicon oil fan clutch slip rate prediction method, belong to vehicle thermal management and clutch state prediction technical field.The method obtains driving end speed, fan speed, target fan speed, silicon oil temperature and ambient temperature;According to silicon oil temperature, calculate silicon oil viscosity correction coefficient, calculate target slip rate and actual slip rate;Establish transmission torque estimation model, and solve balanced fan speed in combination with fan load curve;According to balanced fan speed output prediction slip rate;Again, the error correction model parameter between actual slip rate and prediction slip rate is utilized.The method can couple silicon oil viscosity-temperature characteristic, fan load curve and driving end-from driving end speed relationship, improve the accuracy and adaptability of slip rate prediction under different conditions.