| ELECTRICALLY ASSISTED INTERNAL COMBUSTION ENGINES:
A COMPARATIVE ANALYSIS |
| Carlo Scaffidi, Salvatore De Caro, Salvatore Foti, Tommaso Scimone, Antonio Testa |
| University of Messina |
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| ABSTRACT |
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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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Corresponding Author.
Salvatore De Caro , Email. 
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