Browse Publications Technical Papers 2018-32-0082
2018-10-30

Model-based approach for engine performance optimization 2018-32-0082

Model-based approach for engine performance optimization How model-based testing and optimization can support the improvement of performance, drivability, durability and fuel consumption of motorcycle (race) engines //Abstract State-of-the-art motorcycle engines consist of numerous variable components and require a powerful motor management to meet the growing customer expectations and the legislative requirements (e.g. exhaust and noise emissions, fuel consumption) at the same time. These demands are often competing and raise the level of complexity in calibration. In the racing domain, the optimization requirements are usually higher and test efficiency is crucial. Whilst the number of variables to control are growing, the time to perform an engine optimization remains or is even shortened. Therefore, simulation is becoming an essential part of the engine calibration optimization. Considering the special circumstances in racing, involving valuable hardware, as well as extremely short development and calibration iteration loops, only transient testing is possible. By utilizing model-based testing and optimization, Ducati Corse, the racing team division of the well-known motorcycle manufacturer Ducati, improved the ability to optimize their race engines efficiently. Through using the engine model, it is feasible to make calibration adaptations as quickly as possible. All parameters can easily be optimized with respect of potential constraints without actually running the engine on a testbed. Moreover, the re-use of the engine model for co-simulations is applicable and the share with other departments in the company is possible to increase efficiency even more. AVL CAMEO™ - the intelligent automated calibration environment - supports all engine optimization requirements with a consistent workflow from the task definition to the verification. For this specific racing use case, the software solution was implemented for the test planning using DoE, the data plausibility check and the empirical engine modeling. In addition, AVL CAMEO™ was the tool for realizing the model-based optimization and map creation. With the implementation of the model-based approach, the motorcycle manufacturer has successfully improved the engine performance optimization. An exact model of the engine is now available which supports a deep understanding of the engine behavior. Through realizing this calibration approach, quick office and race track adaptations are possible and alternative optimizations for different tracks or conditions are easy to execute.

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