Methods for performance evaluation of lubricants and friction materials in wet multiple disc clutches in axle brake applications

摘要

At the Gear Research Center (FZG) of Technische Universitat Munchen wet multiple disc clutches for axle brake application have been investigated. Due to load conditions in application (low differential speeds, high inertia) realistic tests can only be performed on very powerful test rigs. The newly developed "FZG - Axle Brake" Test allows testing on cost effective test rigs. Because of that the load conditions for testing are not identical to application, at the same time friction behavior is influenced by these conditions. In this report a method is shown to gain reliable results although load conditions of testing and application differ. By exemplary results testmethod and evaluation of tests are outlined.