Analytical Evaluation of Engine and Vehicle Hardware Effects on Vehicle Response
Published April 2, 2019 by SAE International in United States
Downloadable datasets for this paper availableAnnotation of this paper is available
As the proliferation of downsized boosted engines continues, it becomes increasingly important to understand how engine and vehicle hardware impact vehicle transient response. Several different methodologies can be used to understand hardware impacts, such as vehicle testing, 0-D vehicle models, and constant engine speed load steps. The next evolution of predicting vehicle transient response is to transition to a system level vehicle analysis by coupling a detailed engine model, utilizing crank angle resolved calculations, with a simple vehicle model. This allows for the evaluation of engine and vehicle hardware effects on vehicle acceleration and the rate of change of vehicle acceleration, or jerk, and the tradeoffs that can be made between the hardware in early program development. By comparing this system level vehicle model to the different methodologies, it can be shown that a system level vehicle analysis allows for higher fidelity evaluations of vehicle transient response. This contributes to greater understanding of hardware effects on vehicle transient response and allows for improved optimization of vehicle level response, performance and fuel economy.
CitationRaftopoulos, A., "Analytical Evaluation of Engine and Vehicle Hardware Effects on Vehicle Response," SAE Technical Paper 2019-01-1283, 2019, https://doi.org/10.4271/2019-01-1283.
Data Sets - Support Documents
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