Convex modeling and sizing of electrically supercharged internal combustion engine powertrain
Journal article, 2016

This paper investigates a concept of an electrically supercharged internal combustion engine powertrain. A supercharger consists of an electric motor and a compressor. It draws its power from an electric energy buffer (e.g., a battery) and helps the engine during short-duration high-power demands. Both the engine and the buffer are sized to reduce the sum of the vehicle operational (fuel) and component (engine and buffer) costs. For this purpose, a convex, driving cycle-based vehicle model is derived, enabling the formulation of an underlying optimization problem as a second order cone program. Such a program can be efficiently solved using dedicated numerical tools (for a given gear selection strategy), which provides not only the optimal engine/buffer sizes but also the optimal vehicle control and state trajectories (e.g., compressor power and buffer energy). Finally, the results obtained from a representative, numerical case study are discussed in detail.

energy management



optimal control



Sava Marinkov

Technische Universiteit Eindhoven

Nikolce Murgovski

Chalmers, Signals and Systems, Systems and control, Mechatronics

Bram de Jager

Technische Universiteit Eindhoven

IEEE Transactions on Vehicular Technology

0018-9545 (ISSN)

Vol. 65 6 4523-4534

Driving Forces

Sustainable development

Areas of Advance



Subject Categories

Computational Mathematics

Control Engineering



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