Parametric analysis of wear factors of a wet clutch friction material with different groove patterns

Abstract

The experimentally observed, two-stage wear in the wet clutch friction material is directly related to temperature and engagement load. To gain insight into the durability of the friction lining, an extensive parametric analysis of the factors is performed that takes into account different groove patterns (waffle shape, radial, and spiral), internal structure and material properties. The temperature field is predicted using a thermohydrodynamic analysis with the consideration of the asperity contact stress during the engagement process. The results should be useful to facilitate the industrial design of friction lining by avoiding costly wear test.

Investigation of Flexible Clutches Over a Wide Range

“…Nevertheless, little research has carried out to investigate the dynamic characteristics of the clutch when the plate deformation occurs [3] . [16] A plate attached to the splined sleeves, which further connected to the pedal fulcrum, as shown in Fig.2. Such as when pressing the clutch pedal, the sleeves connected to the pedal pole shift towards the outside, which drives the pressure plate attached to that splined sleeve in turn.…”

Numerical and Experimental Studies of the Attenuation Characteristics of Friction Torque in a Wet Multidisc Clutch

“…The separate plates and friction discs are arranged alternately, and respectively mounted to the cylinder liner and driving shaft by splines [13]. The circlip installed in the groove of cylinder liner plays a role in limiting the axial position of friction components [14]. By pumping pressure oil into the piston chamber, the friction components start to rub against each other, and the axial gap between them gradually disappears [15,16].…”

Coefficient of friction and wear rate of paper-based composite friction material against 65Mn steel

“…Paper-based composite materials whose matrix is mainly composed of some binders, fillers, fibers, and friction modifiers [1][2][3][4] have gained popularity in the automobile industry for the design of the clutch friction disc of automatic transmission systems. 1 Paperbased friction materials, when used in dry clutch undergoes series of wear, distortion and high temperatures, which results in excessive noise, vibration and poor friction behavior.…”

“…This effect influences the dynamic friction behavior and the wear rate of friction materials, thus leading to poor torque transmission and noise during clutch engagement. 2 From this illustration, a paper-based friction disc should be designed to withstand harsh conditions and produce high and stable friction coefficient at variable operating conditions. This is done to ensure maximum power transmission from the engine under a smooth and fast clutch engagement.…”