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Composition Platform for Conventional and Hybrid Powertrains
Technical Paper
2017-24-0172
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In view of the rapidly increasing complexity of conventional as well as hybrid powertrains, a systematic composition platform seeking for the global optimum powertrain is presented in this paper. The platform can be mainly divided into three parts: the synthesis of the transmission, the synthesis of the internal combustion engine (ICE) and the optimization and evaluation of the entire powertrain.
In regard to the synthesis of transmission concepts, a systematical and computer-aided tool suitable both for conventional und hybrid transmissions is developed. With this tool, all the potential transmission concepts, which can realize the desired driving modes or ratios, can be synthesized based on the vehicle data and requirements. As a result of the transmission synthesis, the detailed information of each transmission concept, including the transmission structure, the shifting logic, the estimated efficiency in each gear, and the estimated space arrangement of the transmission can be given out.
The synthesis of transmission concepts is complemented by a comprehensive tool able to synthesize internal combustion engines of gasoline and gasoline/Atkinson type. The ICE synthesis precalculates frictional and thermodynamic engine behavior and is validated by an ad hoc created database of 250 engines, which serves as a comparison. Design parameters are deducted from this database in order to minimize the number of input parameters for the ICE synthesis. The result of the ICE synthesis is a map of the specific fuel consumption or an effective efficiency map. The tool is implemented as a function to the overall powertrain synthesis and will be triggered by an optimizer during the future development progress.
Successively, the two synthesizing tools are joined to compose complete powertrains. Each powertrain concept consists of design parameters and corresponding configurations of synthesized ICE and transmissions. By varying these parameters, the different powertrains are further optimized and evaluated in consideration of the system efficiency and vehicle dynamics within the driving cycle.
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Authors
- Haijun Chen - Institute of Automotive Engineering
- Lin Li - Institute of Automotive Engineering
- Mark Schudeleit - Institute of Automotive Engineering
- Andreas Lange - Institute of Automotive Engineering
- Ferit Küçükay - Institute of Automotive Engineering
- Christian Stamme - Institute of Internal Combustion Engines
- Peter Eilts - Institute of Internal Combustion Engines
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Citation
Chen, H., Li, L., Schudeleit, M., Lange, A. et al., "Composition Platform for Conventional and Hybrid Powertrains," SAE Technical Paper 2017-24-0172, 2017, https://doi.org/10.4271/2017-24-0172.Data Sets - Support Documents
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