Analysis of planetary gear hybrid powertrain system part 2: Output split system |
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| Authors: | H Yang B Kim Y Park W Lim S Cha |
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| Institution: | (1) Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, 151-744, Korea;(2) School of Mechanical Design and Automation Engineering, Seoul National University of Technology, Seoul, 151-742, Korea |
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| Abstract: | In recent studies, various types of multi-mode electric variable transmissions for hybrid electric vehicles have been proposed.
A multi-mode electric variable transmission consists of two or more different types of a planetary gear hybrid powertrain
system (PGHP), which can change power flow type using clutches to improve transmission efficiency. Input split systems are
generally used for the single-mode powertrain because of their overall superiority, but other power split systems such as
output split and compound split systems can be used in the dual-mode powertrain. In this study, we analyze the power transmission
characteristics of output split systems, and evaluate their fuel economies in the FTP72 cycle, acceleration performance, and
constant vehicle speeds. These results enable the selection of appropriate systems for a dual-mode powertrain. |
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| Keywords: | Transmission efficiency Hybrid electric vehicle Planetary gear Output split |
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