Turbocharging is one of the key technologies in current and future engine development. Due to the increasing requirements that extend beyond power output and torque alone, the internal and external mechanical components of turbochargers are being subjected to an ever-increasing load spectrum.
2017, Papadopoulos, Becker, Ehnis, Kunzel, et al.
Since the oil emission in transient engine operation shows significant deviations from the stationary operation maps, one focus is the analysis of the dynamic oil emission behavior. This means that the calculation and assessment of dynamic oil measurement operations and the calculation of a standardized test program for the visualization of dynamic oil emission effects and for the systematic investigation of the causing oil transport mechanisms.
The structural design of the piston group has a considerable influence on the mechanical losses of internal combustion engines. However, measures to reduce friction are often in conflict with the oil consumption – especially when designing the tangential force of the oil control ring.
The oil emission of an internal combustion engine has a direct influence on the CO2 and particle emissions. As a result, the reduction of oil emissions, especially in the context of the stricter emission limits for the automotive industry, is increasingly becoming the focus of attention. To achieve this goal, a deeper understanding of the mechanism of action for the formation of oil emissions in internal combustion engines is necessary.