Study on the engagement characteristics of wet multi-plate friction clutch based on separating spring

In wet friction clutches, the friction pair is separated by adding separating springs to reduce the drag torque, but the increase of the separating spring will inevitably have a certain impact on the engagement characteristics of the friction clutch. In view of this characteristic, considering the structural parameters of the separating spring, the inter-disc bearing capacity and transmission torque model of the wet multi-plate friction clutch during the engagement process are established, and the variable-order numerical differentiation method is used to solve the problem to explore the influence of the wave number, thickness and width of the separating spring on the characteristics of the rotational speed, inter-sheet bearing capacity, transmission torque and oil film thickness of the wet multi-plate friction clutch engagement process. The results show that the wave number of the separating spring has a significant influence on the mating characteristics of other parameters, so the wave number should be appropriately reduced to reduce the clutch engagement time under the condition of ensuring that the separating spring has sufficient strength.