Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
Volume 223, Issue D9, Pages 1149-1162Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1243/09544070JAUTO1124
Keywords
hybrid electric vehicle; power split; energy management strategy; optimal operation line; monotonicity analysis; operation optimization
Funding
- Korean Government (Ministry of Education, Science and Technology) [KRF-2007-357-D00013]
- University of Michigan
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The powertrain of a hybrid electric vehicle (HEV) can be operated in either a power-boosting or an energy-saving mode. The first mode is used for responding to the driver's full-load demand and the second for achieving high fuel efficiency given an increased number of degrees of freedom in energy management. Optimization problems for the two operation modes are formulated, and the design spaces are analysed for general power-split architectures. Optimization results are presented and analysed for input-split and compound-split architectures. The analysis leads to the definition of a new concept of HEV optimal operation that improves the conventional idea of engine optimal operation line.
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