This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Lamborghini Approach to Engine Downsizing Engine Friction Modeling
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 08, 2013 by SAE International in United States
Annotation ability available
Downsizing, down speeding and hybridization are becoming a standard in the automotive industry. This paper was initiated to answer Automobili Lamborghini R&D's question: what does downsizing mean In technical literature downsizing is often referred to as reducing displacement and, sometimes, cylinders. Through a methodological approach, analysis and experimental activities Automobili Lamborghini, with FEV's support, shows that downsizing in terms of engine friction reduction means only reduction of displacement. Using the Aventador V12 6.5 liter engine as a baseline, two 4.3 liter engines were designed, a V8 and a V12.
The engine friction losses of these two engines were calculated all over the engine speed range and during the NEDC cycle utilizing a simulation tool and verified through FEV's “Strip-Method” database.
This approach gives us the holistic understanding on engine components design and which technologies should be introduced for the next Lamborghini engine generation.
CitationMeloni, M., Cacciatore, D., Dohmen, J., Ring, F. et al., "Lamborghini Approach to Engine Downsizing Engine Friction Modeling," SAE Technical Paper 2013-24-0088, 2013, https://doi.org/10.4271/2013-24-0088.
- Heywood J.B. Internal Combustion Engine Fundamentals McGraw-Hill New York 1988 712 745
- Sandoval , D. and Heywood , J. An Improved Friction Model for Spark-Ignition Engines SAE Technical Paper 2003-01-0725 2003 10.4271/2003-01-0725