This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Virtual Set-up of a Racing Engine for the Optimization of Lap Performance through a Comprehensive Engine-Vehicle-Driver Model
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 11, 2011 by SAE International in United States
Annotation ability available
In Motorsports the understanding of the real engine performance within a complete circuit lap is a crucial topic. On the basis of the telemetry data the engineers are able to monitor this performance and try to adapt the engine to the vehicle's and race track's characteristics and driver's needs. However, quite often the telemetry is the sole analysis instrument for the Engine-Vehicle-Driver (EVD) system and it has no prediction capability. The engine optimization for best lap-time or best fuel economy is therefore a topic which is not trivial to solve, without the aid of suitable, reliable and predictive engineering tools. A complete EVD model was therefore built in a GT-SUITE™ environment for a Motorsport racing car (STCC-VW-Scirocco) equipped with a Compressed Natural Gas (CNG) turbocharged S.I. engine and calibrated on the basis of telemetry and test bench data. The driver is simulated by means of a "position based" control in order to determine the braking points at each corner by itself and regulate the braking/accelerating intensity. By means of simplified vehicle dynamics and a complete engine flow dynamic modeling the behavior of the overall system during the lap can be analyzed and different scenarios simulated. In particular the focus is concentrated on the real operating conditions of the powertrain unit, which can be eventually combined also with energy recovery systems (e.g., KERS and TERS). In the proposed EVD model each technical element (Engine, Vehicle) is distinct and can be interchangeable. For example, the engine can be virtually optimized and the influence of different technical configurations or engine mapping on the global performance can be investigated. The aim is to create modeling solutions which are compatible with the short development time of motorsports and thus to maintain acceptable CPU-time. As results of the proposed simulations show, spark advance, fuel injection and direct control of the waste-gate (WG) are parameters which can influence the overall performance for the adopted racing vehicle.
|Technical Paper||Effect of Replacement of Butterfly Throttle Body by Barrel Throttle Body on Mass Flow Rate using CFD|
|Technical Paper||High Performance Electric Kart|
CitationFerrari, A., Chiodi, M., Bargende, M., Roberti, P. et al., "Virtual Set-up of a Racing Engine for the Optimization of Lap Performance through a Comprehensive Engine-Vehicle-Driver Model," SAE Technical Paper 2011-24-0141, 2011, https://doi.org/10.4271/2011-24-0141.
- Heywood, J.B.: “Internal Combustion Engine Fundamentals”. Mc Graw Hill, 1988
- Chiodi, M., Ferrari, A., Mack, O., Bargende, M., Wichelhaus, D. “QuickSim in Motorsports”, 11th Internationales Stuttgarter Symposium, 2011
- Grill, M., Billinger, T., Bargende, M.: “Quasi-Dimensional Modeling of Spark Ignition Engine Combustion with Variable Valve Train,” SAE Technical Paper 2006-01-1107, 2006, doi:10.4271/2006-01-1107.
- Robert Bosch GmbH, “Ottomotor-Management”, Vieweg Verlag, ISBN 3-8348-0037-6, 2005
- Chiodi, M., An innovative 3D-CFD-Approach towards Virtual development of internal Combustion Engines, Dissertation University of Stuttgart, 2010
- GT-Drive User Manual, Gamma Technologies
- Müller, W., Amtmann, M., Erlach, H.: “High sophisticated boost-pressure control: The MAHLE Electrical Waste Gate Actuator”, 11th Stuttgarter Symposium, 2011
- Guelder, O. L., “Correlations of Laminar Combustion Data for Alternative S.I. Engine Fuels,” SAE Technical Paper 841000, 1984, doi: 10.4271/841000.
- Grill, M..: Objektorientierte Prozessrechnung von Verbrennungsmotoren. Dissertation, Universität Stuttgart, 2006
- FKFSUserCylinder, Bedienungsanleitung zur GT-Power Erweiterung, 2009
- Chiodi, M., Ferrari, A., Mack, O., Bargende, M., Wichelhaus, D., “A Way towards Remarkable Reduction of CO2 Emissions in Motorsports: The CNG Engine,” SAE Technical Paper 2011-37-0006, 2011, doi:10.4271/2011-037-0006.
- Berner, H.-J., Bargende, M., “Erdgas als alternativer Kraftstoff - Ein Überblick.” Tagung Innovative Fahrzeugantriebe, Dresden, 2000.
- Friedrich, C., Quarg, J., Berner, H.-J., Bargende, M., “Leistungs- und Emissionspotenzial eines aufgeladenen 1 Liter-Erdgas-Motors”, 4. Stuttgarter Symposium, 2001.
- Schmid, A., Grill, M., Berner, H.-J., Bargende, M.: “Transient Simulation with scavenging in the Turbo Spark-Ignition Engine”, MTZ-11.2010
- Chiodi, M., Berner, H.-J., Bargende, M., “Schnelle 3D-CFD-Untersuchungen des Ansaugsystems eines aufgeladenen 11-Erdgasmotors mit dem Entwicklungstool QuickSim”, Tagung: Ansaug-systeme aufgeladener Motoren, Haus der Technik, Ludwigsburg, 2006