Test bed and method for testing damping of silicone oil clutch of engine cooling fan
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A silicone oil clutch, engine cooling technology, applied in the direction of machine gear/transmission mechanism testing, etc., can solve the problems of resonance, affecting the service life of the silicone oil clutch assembly, and large torsional vibration of the cooling fan.
Active Publication Date: 2014-04-30
XUELONG GRP +1
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Problems solved by technology
If the damping of the silicone oil clutch does not match the crankshaft system of the engine, the cooling fan will gener
Method used
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Embodiment 1
[0080] Such as Figures 1 to 4 As shown, a test bench for testing engine cooling fan silicon oil clutch damping, including torsional vibration excitation system, silicon oil clutch drive system, data acquisition system, processing control system;
[0081] The torsional vibration system includes a planetary gear vibration excitation box capable of outputting frequency-adjustable continuous simple harmonic torque excitation, and a vibration excitation motor 101. The vibration excitation motor 101 is connected to the planetary gear vibration excitation box through a first flexible coupling 102 The input drive connection;
[0082] The silicone oil clutch drive system includes a main shaft motor 112, a magnetic powder clutch 110, a synchronous pulley 108, a torsional vibration shaft 113, and a working adapter plate 116. The input end of the magnetic powder clutch 110 is driven by the second flexible coupling 111 and the main shaft motor 112. connected, the output end is drivingly ...
Embodiment 2
[0092] A method utilizing said test bench to test engine cooling fan silicon oil clutch damping, comprising steps:
[0093] 1) Obtain the initial parameters of the test bench, that is, the torsional stiffness k 0 and the damping of the lubricating oil of the planetary gear vibration box c 0 ;
[0094] 2) Install a silicon oil clutch on the working connecting plate 116, and engage the magnetic powder clutch 110;
[0095] 3) Start the main shaft motor 112, drive the torsional vibration shaft 113 to rotate through the magnetic powder clutch 110 and the synchronous pulley 108, so that it reaches the test speed of the silicone oil clutch;
[0096] 4) start the excitation motor 101, drive the sun gear 103 to rotate, and generate continuous sinusoidal torque excitation by the rotational speed difference between the sun gear 103 and the planet carrier 106, and act on the planet carrier 106;
[0097] 5) Correct the input voltage of the magnetic powder clutch 110. The rotational spee...
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Abstract
The invention discloses a test bed and method for testing damping of a silicone oil clutch of an engine cooling fan. The test bed comprises a torsion vibration excitation system, a silicone oil clutch driving system, a data acquisition system and a processing control system, wherein the torsion vibration excitation system comprises a vibration excitation motor and a planet gear vibration excitation box, and is used for generating continuous simple-harmonic torque excitation with the adjustable frequency for the test bed, the silicone oil clutch driving system comprises a spindle motor, a magnetic powder clutch, a synchronous pulley and a torsional vibration shaft, and can be used for achieving rotational motion of the silicone oil clutch, rotating speed signals, collected by the data acquisition system, of a working receiving disk are processed through the processing control system to obtain the second-order inherent frequency of the test bed, and thus the damping of the silicone oil clutch is calculated. According to the test bed and method for testing the damping of the silicone oil clutch of the engine cooling fan, the purposes that vibration excitation torque is applied in the process of rotation of the silicone oil clutch, and the actual working conditions of the silicone oil clutch are simulated are achieved; torsional vibration rotating speed signals are acquired by using an angle encoder in a software timing mode, and then are processed automatically, other data acquisition devices do not need to be additionally installed, the manufacturing cost is reduced, and it is ensured that the test result is high in accuracy.
Description
technical field [0001] The invention relates to an engine cooling fan silicone oil clutch damping test bench and method, in particular to a planetary gear vibration box driven by two servo motors to generate continuous simple harmonic torque excitation and drive the silicone oil clutch to rotate at the same time to simulate the engine The actual working condition of torsional vibration generated during the rotation of the crankshaft, and the engine cooling fan silicone oil clutch damping test test bench and method using the motion controller to realize data acquisition and processing based on software timing and automatic control of electrical equipment. Background technique [0002] Automobile fan automatic clutch technology is one of the key technologies of automobile engine cooling system. The silicone oil clutch is a transmission device that transmits torque by using the viscous shear force of silicone oil. Compared with the traditional cooling fan, the silicone oil clu...
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