International Journal of Automotive Technology

, Volume 19, Issue 6, pp 1091–1101 | Cite as

Electrically Assisted Internal Combustion Engines: A Comparative Analysis

  • Carlo Scaffidi
  • Salvatore De CaroEmail author
  • Salvatore Foti
  • Tommaso Scimone
  • Antonio Testa


An electrically assisted internal combustion engine is obtained by combining a conventional engine and one or more electrical motors of considerably smaller size. A key feature of such an innovative vehicle hybridization approach is that the torque generated by electric machines is not transmitted to the wheels. The electric motors are, in fact, intended only to assist the internal combustion engine in low efficiency, low performance, or high polluting working conditions. They however, draw extra power and energy from the battery. This paper presents a tool to evaluate different possible solutions in terms of energy balance, efficiency, battery stress and battery ageing. The method, which is based on suitable mathematical models and specific analysis criteria is also exploited to compare eight different configurations of a C-segment vehicle, pointing out limits and capabilities of traditional 12−14 V systems.

Key Words

Battery lifetime Electric turbo-charger Fuel saving Hybridization Micro-cycles Vehicle modelization 


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Copyright information

© The Korean Society of Automotive Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Carlo Scaffidi
    • 1
  • Salvatore De Caro
    • 1
    Email author
  • Salvatore Foti
    • 1
  • Tommaso Scimone
    • 1
  • Antonio Testa
    • 1
  1. 1.Department of EngineeringUniversity of MessinaMessinaItaly

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