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A holistic Development Method based on AVL FRISC as Enabler for CO2 Reduction with Focus on Low Viscosity Oils
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 14, 2020 by SAE International in United States
To achieve future fleet CO2 emission targets all kind of powertrains including thus with internal combustion engines need to achieve highest efficiency. Next to others the reduction of friction is one contributor to increase powertrain efficiency. The piston bore interface (PBI) is responsible for up to 50% of total engine friction losses. Optimizations in this area combined with use of low viscosity oil, which can reduce the friction of further engine sub-systems, will have the highest positive impact. To assess the friction of PBI under consideration of cross effects on 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 on the AVL FRISC (FRIction Single Cylinder) engine with floating liner measurement concept combined with synchronous online oil consumption and wear measurement supported by advanced simulation models, which were validated with further advanced measurement techniques. This paper will present the development method approach based on selected exemplary results and the possible transfer of results to multi cylinder engine development. Alternative Session: M203 Automotive Engineering Testing and Test Methods