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Mild Hybrid System in Combination with Waste Heat Recovery for Commercial Vehicles
Linköping University, Department of Management and Engineering, Machine Design. Linköping University, The Institute of Technology.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Performance of two different waste heat recovery systems (one based on Rankine cycle and the other one using thermoelectricity) combined with non-hybrid, mild-hybrid and full hybrid systems are investigated. The vehicle under investigation was a 440hp Scania truck, loaded by 40 tons. Input data included logged data from a long haulage drive test in Sweden.All systems (waste heat recovery as well as hybrid) are implemented and simulated in Matlab/Simulink. Almost all systems are modeled using measured data or performance curves provided by one manufacturer. For Rankine system results from another investigation were used.Regardless of practical issues in implementing systems, reduction in fuel consumption for six different combination of waste heat recovery systems and hybrid systems with different degrees of hybridization are calculated. In general Rankine cycle shows a better performance. However, due to improvements achieved in laboratories, thermoelectricity could also be an option in future.This study focuses on “system” point of view and therefore high precision calculations is not included. However it can be useful in making decisions for further investigations.

Place, publisher, year, edition, pages
2013. , 62 p.
Keyword [en]
Waste heat recovery, hybrid electric vehicle, thermoelectricity, thermoelectric generators, fuel economy, mild-hybrid, full-hybrid
National Category
Mechanical Engineering
URN: urn:nbn:se:liu:diva-93997ISRN: LIU-IEI-TEK-A--13/01678—SEOAI: diva2:628353
External cooperation
Subject / course
Mechanical Engineering
2013-06-10, A39, Linköping University, A building, Linköping, 15:15 (English)
Available from: 2013-06-14 Created: 2013-06-13 Last updated: 2013-06-18Bibliographically approved

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Namakian, Mohsen
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Machine DesignThe Institute of Technology
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