A holistic Development Method Based on AVL FRISC as Enabler for CO
Reduction with Focus on Low Viscosity Oils
To achieve future fleet CO2 emission targets, all powertrain types, including those with internal combustion engines, need to achieve higher efficiency. Next to others the reduction of friction is one contributor to increase powertrain efficiency. The piston bore interface (PBI) accounts for up to 50 % of the total engine friction losses . Optimizations in this area combined with the use of low viscosity oil, which can reduce the friction of further engine sub-systems, will therefore have a high positive impact. To assess the friction of the PBI whilst considering cross effects of other relevant parameters for mechanical function (e.g. blow-by & wear) and emissions (e.g. oil consumption) AVL has established a holistic development method based around the AVL FRISC (FRIction Single Cylinder) engine with a floating liner measurement concept. This is combined with synchronous online oil consumption and wear measurements, and supported by advanced simulation models, which are themselves validated with advanced measurement techniques. This paper will present this development method with selected examples and show the possibility how results can be applied to multi cylinder engine development.
Citation: Plettenberg, M., Schäffer, J., Edtmayer, J., Loesch, S. et al., "A holistic Development Method Based on AVL FRISC as Enabler for CO2 Reduction with Focus on Low Viscosity Oils," SAE Technical Paper 2020-01-1060, 2020, https://doi.org/10.4271/2020-01-1060. Download Citation
Mirko Plettenberg, Julian Schäffer, Josef Edtmayer, Sigfried Loesch, Heinz-Georg Flesch, Hannes Hick, Simon Walch
AVL LIST GmbH, Graz University of Technology