Friction in the Continuously Variable Transmission. Test bench and initial test results

The article concerns friction problems in the Continuously Variable Transmission (CVT) with a pushbelt or a chain. A small test bench is prepared with the aim to expand knowledge about friction phenomena which occur in the CVT between steel belt elements and pulleys. The literature explains this problem not sufficiently. After short theoretical introduction, the paper contains a description of the test bench and its correlation to the real CVT gearbox as it is in a car. Afterwards the initial test results are presented and completed with some remarks. At the end, summary and conclusion are defined.