Concept to Start-of-Production Powertrain Bearing Analysis 2020-28-0326
Future’s internal combustion engines request maximum efficiency with absolute safety and durability. The current market trend imposes maximum strain on bearings. The major bearings are cam shafts, piston pin and piston boss bearings, crankshaft main bearings, conrod big end and crank pin bearings and selection of correct layout for these bearings becomes critical.
Simulations can assist to achieve a good and production ready design with shorter development cycles. In this paper an easy-to-use bearing modelling approach is proposed, with a focus on Thermo-Elasto-Hydrodynamic (TEHD) solution. This approach recognizes many different applications and systems within the powertrain and need for borderline designs directly from the concept phase of engine development.
The hydrodynamics module is completely integrated into multi body simulation (MBS) as force elements. This allows interaction between the structural dynamics and bearing hydrodynamics to improve the quality of results. The proposed approach helps to design powertrain bearings from kick-off to start-of-production (SOP).