Vehicle Modeling and Evaluation of the Engine Options in Conventional and Mild-Hybrid Powertrain

Paper #:
  • 2013-01-1449

Published:
  • 2013-04-08
DOI:
  • 10.4271/2013-01-1449
Citation:
Ivanco, A. and Filipi, Z., "Vehicle Modeling and Evaluation of the Engine Options in Conventional and Mild-Hybrid Powertrain," SAE Technical Paper 2013-01-1449, 2013, https://doi.org/10.4271/2013-01-1449.
Pages:
8
Abstract:
The focus of this paper is on developing, modeling and simulation framework for a bias free comparison of different engine concepts in a conventional and hybrid configuration. The first unique contribution of this paper is in the development of a shift logic algorithm that allows tailoring the shift schedule to unique engine characteristics in a consistent manner. The shift schedule is intentionally generated in a generic manner by using identical set of rules for all engines. Therefore, the methodology allows a fair comparison of different engine concepts, while taking into account the individual features of the engine i.e. speed range, efficiency and maximum performance. The latter establishes a baseline for the subsequent study of hybrid configurations. The second unique contribution is the hybrid strategy optimization algorithm, also tailored to a particular engine configuration. The strategy is developed using a dynamic programming algorithm, followed by rule extraction to develop an implementable strategy. Ultimately, the proposed approach enables a consistent evaluation process, where different engines and hybrid hardware are treated in a unified simulation-based framework.
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