Optimizing friction torque reduction with ultra-low viscosity oils
Research and development activities on passenger car vehicles have been increasingly driven by ever-tougher emissions legislations and fuel economy targets. Japanese OEMs have shown leadership in developing the engine hardware to take advantage of ultra-low viscosity oils at 0W-16 grade and lower.
A friction torque test engine cell has been developed and deemed appropriate to investigate the key factors within oil formulations which achieve the greatest reductions in friction.
This paper presents the friction torque test results when varying key formulation parameters such as base oil type, polymer selection, specific chemistry and base oil viscosity. It builds understanding of key lubricating phenomena taking place with ultra-low viscosity oils.