In wet clutches, load-independent drag losses occur in the disengaged state and under
differential speed due to fluid shearing. The drag torque of a wet clutch can be determined …

A mathematical model is established to predict the drag torque increment due to the
mechanical contact at high circumferential speed in open wet clutches. The fluid …

This paper presents an investigation of the hot judder behavior in a multi-disc clutch with the
uneven contact pressure and the initial temperature taken into account. Considering the …

Wet-running multi-plate clutches and brakes are important components of modern
powershift gearboxes and industrial powertrains. In the open stage, drag losses occur due to …

The drag torque produced by the viscous shearing action of lubricating oil is an important
component of the power loss of wet clutches. Studying the prediction model and its …

A comprehensive numerical model was proposed to investigate the disengaging process of
a wet multi-disc clutch, which included the hydrodynamic lubrication, the micro elastic-plastic …

Computational fluid dynamics (CFD) has been unable to reliably predict aeration and drag
torque in clutches. In this study, a CFD method was developed to reliably predict the onset of …

In order to evaluate the drag torque of wet clutches in high speed zone, a gas-fluid two
phases mathematical model was established with grooves in consideration based on the …

The friction pair gap affects not only the temperature increase of the multi-disc wet clutch, but
also the efficiency of the helicopter transmission system. Consequently, a rotational–axial …

Traditional mathematical models cannot predict and explain the phenomenon by which the
drag torque (DT) in wet clutches rises in the high-speed zone. In order to evaluate the DT in …