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Powertrain sizing of electrically supercharged internal combustion engine vehicles

Nikolce Murgovski (Institutionen för signaler och system, Mekatronik) ; Sava Marinkov ; Daniel Hilgersom ; Bram de Jager ; Maarten Steinbuch ; Jonas Sjöberg (Institutionen för signaler och system, Mekatronik)
IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling E-COSM (2405-8963). Vol. 48 (2015), 15, p. 2405-8963.
[Konferensbidrag, refereegranskat]

We assess the concept of electrically supercharged internal combustion engines, where the supercharger, consisting of a compressor and an electric motor, draws electric power from a buffer (a battery or a supercapacitor). In particular, we investigate the scenario of downsizing the engine, while delivering high power demands by supercharging. Simultaneously, we seek the optimum buffer size that provides sufficient electric power and energy to run the supercharger, such that the vehicle is able to deliver the performance required by a driving cycle representing the typical daily usage of the vehicle. We provide convex modeling steps that formulate the problem as a second order cone program that not only delivers the optimal engine and buffer size, but also provides the optimal control and state trajectories for a given gear selection strategy. Finally, we provide a case study of sizing the engine and the electric buffer for different compressor power ratings.

Nyckelord: Electric supercharger, convex optimization, powertrain design, energy management, optimal control



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Denna post skapades 2016-01-18. Senast ändrad 2016-07-24.
CPL Pubid: 230893

 

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