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Dimensioning a plug-in hybrid using drive-cycle information

A driving cycle is a representation of vehicle speed versus time, and in the automotive industry driving cycles have been used to evaluate vehicles both in the development phase of new vehicles, but also in gas emissions tests. Using fixed driving cycles there is a risk that the vehicle is optimized for a certain driving cycle, and if the driving cycle is not representative for real-world driving there is a considerable risk that it will be a sub-optimal solution for real-world driving. The objective is representative driving cycles sufficiently close to data from real-world driving.

The scope of this project is to:
* Develop a tool that are able to generate different driving cycles which are representative to real-world driving.
* Investigate how a comparison between two driving cycles can be made more fair, for example related to fuel consumption or sizing of the components. Which parameters are important in a such comparison?
* Provide insights of how the length of the driving cycle will affect the accuracy of the outcome. How long does a driving cycle need to be to be able to reflect varies types of driving behavior that have an impact on the sizing of the vehicles components?

The project is carried out in two parts, at Chalmers University of Technology (PhD student Victor Judez) and Linköping University (PhD student Peter Nyberg).

The Linköping University part of this project was finished in June 2015.

Read articles about Peter Nyberg’s research:

New methods for drive cycles – a powerful tool for vehicle development >>

LiU-forskning stoppar avgasfusket >>

Ladda ner rapporten: Drive cycles (128 kB)

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