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Preliminary Analysis of a New Power Train Concept for a City Hybrid Vehicle

Department of Mechanical and Aerospace Engineering, University of Roma “Sapienza”, 00185 Roma, Italy
Received: 11 January 2021 / Revised: 25 February 2021 / Accepted: 2 March 2021 / Published: 10 March 2021
This research aims to test the feasibility of a prototype of a newly designed thermal engine for a hybrid propulsion vehicle. This study consists of the implementation of an innovative supercharger for city car internal combustion engine ICE (900 cc). The preliminary proposal presented here is to mechanically disconnect the compressor/turbine device, supporting the rotation of the compressor with a dedicated electric motor and connecting a turbine to a generator. Mechanical decoupling will allow both machines to be designed for operating closer to their maximum performance point, for most of the expected real field of operation. Specifically, the turbine is likely to have a lower rotation speed than the original group and will, therefore, be slightly larger. The advantage is that, while in the current supercharger groups the surplus at high regimes is discharged through the waste-gate valve without expanding in a turbine, in the configuration proposed, all the energy of the combustible gases is used by the turbine to generate electrical power that can be used where required. Once the motorization of the vehicle (999 cc) has been fixed, the two turbomachines will have to be studied and designed, looking where possible, for commercial components. Finally, a computational fluid dynamic CFD will be needed to verify the validity of the choice, followed by careful experimentation campaigns. View Full-Text
Keywords: mild-hybrid; power train; compressor; turbine; operative maps mild-hybrid; power train; compressor; turbine; operative maps
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MDPI and ACS Style

Capata, R. Preliminary Analysis of a New Power Train Concept for a City Hybrid Vehicle. Designs 2021, 5, 19. https://0-doi-org.brum.beds.ac.uk/10.3390/designs5010019

AMA Style

Capata R. Preliminary Analysis of a New Power Train Concept for a City Hybrid Vehicle. Designs. 2021; 5(1):19. https://0-doi-org.brum.beds.ac.uk/10.3390/designs5010019

Chicago/Turabian Style

Capata, Roberto. 2021. "Preliminary Analysis of a New Power Train Concept for a City Hybrid Vehicle" Designs 5, no. 1: 19. https://0-doi-org.brum.beds.ac.uk/10.3390/designs5010019

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