韩国科学技术院专家学术讲座

In Search Of Novel Power -Split Hybrid Electric Vehicles

主讲人 : Dongsuk Kum 韩国科学技术院

Fuel economy of hybrid electric vehicles has been steadily improving over the last couple of decades, and it seems to be reaching its limits. In fact, any OEMs can reduce HEVs that can achieve fuel economy close to the limit regardless of powertrain topologies if constraints on cost (e.g. motor size) and/or acceleration performance are relaxed. Therefore, both drivability and cost must be considered when searching for novel HEV architecture.

Among others, power-split hybrids are known for their high potentials because split hybrids provide a large number of different configurations; twenty four ways of connecting four components (two electric machines, an engine, and a vehicle wheel) with a planetary gear (PG), and more than thousand ways with two PGs. Despite high potentials, finding the best split hybrid was practically impossible due to the large design space. For instance, each compound -split hybrid configuration has three design variables; PG1, PG2, and final drive gear ratios. Recently, the research team at Korea Advanced Institute of Science & Technology (KAIST) evaluated both fuel economy and acceleration performance for all compound -split hybrid configurations and found a few novel compound-split HEV powertrain architecture. Simulation results confirm that the new architecture outperforms all the hybrids on the market from both fuel economy and acceleration performance perspectives.

The focus of this talk will be on how KAIST team was able to find the novel compound-split hybrid architecture, namely the comprehensive design methodology.

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主讲人简介：

Dongsuk Kum received his Ph. D. degree in mechanical engineering from the University of Michigan, Ann Arbor, in 2010. He is currently an Assistant Professor at the Graduate School for Green Transportation in Korea Advanced Institute of Science & Technology (KAIST), and the Director of the Vehicle Dynamics and Controls (VDC) Laboratory. His research centers on the modeling, control, and design of advanced vehicular systems with particular interests in hybrid electric vehicles and autonomous vehicles.

Prior to joining KAIST, Professor Kum had worked for the General Motors R&D Propulsion Systems Research Laboratory in Warren, MI as a visiting research scientist. His works at General Motors focused on advanced propulsion system technologies including hybrid electric vehicles, flywheel hybrid, and waste heat recovery systems.