Range Extender Module Transmission Topology Study

Range extender modules are one option to compensate for short drive ranges of electric vehicles. The close interaction of combustion engine and generator poses new challenges in development. A key requirement for range extender systems is to be light and virtually imperceptible in operation. High-speed electrical machines aim at increasing power density. However, their introduction in a range extender requires a gearbox. The combustion engine torque fluctuations can lead to rattle in the gearbox. The rattle can be overcome by a dual mass flywheel. An interdisciplinary model is developed and used to analyse three different range extender systems: one with a low speed generator without gearbox, one with a high-speed generator, and one with a high-speed generator and a dual mass flywheel. The efficiency was found to be higher for the system with a low speed generator, whereas the power density and the costs are beneficial for the high-speed concept. A dual mass flywheel eliminates the changes of torque direction in the gearbox. It reduces the speed fluctuations of the gearbox and generator by over 90 % compared to the low speed setup. But it increases rolling moment and subsequently chassis excitation compared to a setup with only a gearbox.

• Record URL:
  • https://doi.org/10.1007/s12239-018-0084-2
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/12299138
• Supplemental Notes:
  • Copyright © 2018, The Korean Society of Automotive Engineers and Springer-Verlag Berlin Heidelberg.
• Authors:
  • Herold, Konrad
  • Böhmer, Marius
  • Savelsberg, Rene
  • Müller, Alexander
  • Schröter, Jan
  • Karthaus, Jan
  • Seo, Un-Jae
  • Jacbos, Georg
  • Hameyer, Kay
  • Andert, Jakob
• Publication Date: 2018-10

Language

• English

Media Info

• Media Type: Digital/other
• Features: References; Tables;
• Pagination: pp 869-878
• Serial:
  • International Journal of Automotive Technology
  • Volume: 19
  • Issue Number: 5
  • Publisher: Korean Society of Automotive Engineers
  • ISSN: 1229-9138
  • EISSN: 1976-3832
  • Serial URL: http://link.springer.com/journal/12239

Subject/Index Terms

• TRT Terms: Electric generators; Electric vehicles; Flywheels; Internal combustion engines; Noise control; Transmissions; Vehicle range
• Uncontrolled Terms: Energy efficiency; Range extending engines
• Subject Areas: Energy; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01683711
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 19 2018 9:43AM