Method for the predictive calculation of mixed friction

From the perspective of legislative requirements on combustion engines in regards to exhaust emissions, CO₂-efficiency as well as higher specific loads from downsizing measures, friction reduction is especially important. Wear can over time affect the performance of components which for instance is likely to have a negative effect on the emission robustness of an engine. Under the new legislation for emission requirements the engine must meet the requirements over the lifetime of the engine. Deterioration in emission performance due to wear of components will have to be considered when setting the engineering target for the emission performance of the engine.In this context the APL Group is developing an energy based friction and wear model for predictive calculation of friction and wear in lubricated contacts. It allows for more focus on friction and wear related issues earlier on in the development cycle.