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Journal of KONES

Tytuł artykułu

Multi-parametric and multi-objective thermodynamic optimization of a spark-ignition range extender ICE

Autorzy Toman, R.  Brankov, I. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN The current legislation pushes for the increasing level of vehicle powertrain electrification. A series hybrid electric vehicle powertrain with a small Range Extender (REx) unit – comprised of an internal combustion engine and an electric generator – has the technical potential to overcome the main limitations of a pure battery electric vehicle: driving range, heating, and air-conditioning demands. A typical REx ICE operates only in one or few steady-states operating points, leading to different initial priorities for its design. These design priorities, compared to the conventional ICE, are mainly NVH, package, weight, and overall concept functional simplicity – hence the costeffectiveness. The design approach of the OEMs is usually rather conservative: parting from an already-existing ICE or components and adapting it for the REx application. The fuel efficiency potential of a one-point operation of the REx ICE is therefore not fully exploited. This article presents a multi-parametric and multi-objective optimization study of a REx ICE. The studied ICE concept uses a well-known and proven technology with a favourable production and development costs: it is a two-cylinder, natural aspirated, port injected, four-stroke SI engine. The goal of our study is to find its thermodynamic optimum and fuel efficiency potential for different feasible brake power outputs. Our optimization tool-chain combines a parametric GT-Suite ICE simulation model and modeFRONTIER optimization software with various optimization strategies, such as genetic algorithms, gradient based methods or various hybrid methods. The optimization results show a great fuel efficiency improvement potential by applying this multi-parametric and multi-objective method, converging to interesting short-stroke designs with Miller valve timings.
Słowa kluczowe
EN Range Extender   hybrid electric vehicle   battery electric vehicle   internal combustion engine   spark ignition   thermodynamic optimization   genetic algorithm  
Wydawca Institute of Aviation
Czasopismo Journal of KONES
Rocznik 2018
Tom Vol. 25, No. 3
Strony 459--466
Opis fizyczny Bibliogr. 15 poz., rys.
autor Toman, R.
  • Czech Technical University in Prague Faculty of Mechanical Engineering Department of Automotive, Combustion Engine and Railway Engineering Technická Street 4, 166 07 Prague 6, Czech Republic tel.: +420 776 792887 ,
autor Brankov, I.
  • Czech Technical University in Prague Faculty of Mechanical Engineering Department of Automotive, Combustion Engine and Railway Engineering Technická Street 4, 166 07 Prague 6, Czech Republic tel.: +420 776 792887 ,
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Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-49709725-6837-4c4d-8677-9b497979881d
DOI 10.5604/01.3001.0012.4368