Engine operation for the planetary gear hybrid powertrain

Engine operation for the planetary gear hybrid powertrain

The planetary gear hybrid powertrain (PGHP) is considered as a prospective hybrid electric vehicle (HEV) configuration. However, the optimal control of the system remains controversial because the characteristics of this system are much more complicated than those of conventional systems. This paper...

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Veröffentlicht in:Proceedings of the Institution of Mechanical Engineers. Part D, Journal of automobile engineering Journal of automobile engineering, 2006-12, Vol.220 (D12), p.1727-1736
Hauptverfasser: Ahn, Kukhyun, Cho, Sungtae, Cha, Suk Won, Lee, Jang Moo
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container_end_page 1736
container_issue D12
container_start_page 1727
container_title Proceedings of the Institution of Mechanical Engineers. Part D, Journal of automobile engineering
container_volume 220
creator Ahn, Kukhyun
Cho, Sungtae
Cha, Suk Won
Lee, Jang Moo
description The planetary gear hybrid powertrain (PGHP) is considered as a prospective hybrid electric vehicle (HEV) configuration. However, the optimal control of the system remains controversial because the characteristics of this system are much more complicated than those of conventional systems. This paper presents a case study that reveals the ambiguity of the conventionally-defined optimal operation line. Instead of this engine optimal operation line, the system optimal operation point is suggested. This point is determined by considering the engine efficiency and the transmission efficiency simultaneously. With the system optimal operation point, the fuel economy estimate can be simulated. First, the vehicle cruising at constant velocities was simulated. Then, the vehicle was run at various standard emission test schedules and the mileages were estimated. In each case, the engine operation was analysed to comprehend the optimal operation of the PGHP system. Also, the improvements in fuel economy by optimal operation are presented.
doi_str_mv 10.1243/09544070JAUT0279
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title Engine operation for the planetary gear hybrid powertrain
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