This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Application of the Milner CVT as a Novel Power Splitting Transmission for Hybrid Vehicles
Technical Paper
2011-01-0890
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Hybrid vehicles are becoming an increasingly popular choice for both consumers and manufacturers due to their potential for superior fuel economy and low emissions compared with conventional vehicle power trains. Traditionally there have been two types of hybrid vehicle configurations; the parallel hybrid configuration takes advantage of power regeneration for short periods of zero emissions operation, whilst the series hybrid configuration acts as a continually variable transmission (CVT) so that increased engine efficiency can be obtained. The recent interest in hybrid vehicles has led to a number of non-traditional configurations, most notably the power-splitting hybrid electric vehicle, which uses an epicyclic gear as the power-splitting device, and can operate as either a series or a parallel hybrid. A further improvement to this configuration is proposed with the use of a Milner CVT (MCVT) to replace the epicyclic gear set. This offers greater simplicity, as well as the efficiency advantages of using a mechanical CVT to transmit power from either the internal combustion engine or the energy storage device (or both) to the final drive of the vehicle. The vehicle configuration is discussed in detail, including modelling of the MCVT, power flow analysis of the system, selection of the specific vehicle configuration and potential driving modes.
Recommended Content
Technical Paper | Functional Design of a Motor Integrated CVT for a Parallel HEV |
Technical Paper | Clutchless Geared Smart Transmission |
Technical Paper | Fuel Economy Optimization for Parallel Hybrid Vehicles with CVT |
Authors
Topic
Citation
Moyers, J., Akehurst, S., Parker, D., and Schaaf, S., "The Application of the Milner CVT as a Novel Power Splitting Transmission for Hybrid Vehicles," SAE Technical Paper 2011-01-0890, 2011, https://doi.org/10.4271/2011-01-0890.Also In
References
- Liu, J. Peng, H. “Modeling and Control of a Power-Split Hybrid Vehicle” IEEE Trans. Control Systems Tech. 16 6 November 2008
- Orbital Traction Limited 2009 “Power Split Device and Method” 12 03 2009
- Akehurst, S. Brace, C.J. Vaughan, N.D. Milner, P. “Performance Investigation of a Novel Rolling Traction CVT,” SAE Technical Paper 2001-01-0874 2001 10.4271/2001-01-0874
- Duoba, M. Ng, H. Larsen, R. “Characterization and Comparison of Two Hybrid Electric Vehicles (HEVs) - Honda Insight and Toyota Prius,” SAE Technical Paper 2001-01-1335 2001 10.4271/2001-01-1335
- Liu, J. Peng, H. Filipi, Z. “Modeling and Analysis of the Toyota Hybrid System” Proceedings of the 2005 IEEE/ASME Int. Conf. on Advanced Intelligent Mechatronics Monterey, CA July 24 28 2005
- Meisel, J. “An Analytic Foundation for the Toyota Prius THS-II Powertrain with a Comparison to a Strong Parallel Hybrid-Electric Powertrain,” SAE Technical Paper 2006-01-0666 2006 10.4271/2006-01-0666
- Akehurst, S. Parker, D.A. Schaaf, S. “Dynamic Modeling of the Milner Continuously Variable Transmission - The Basic Kinematics” Transactions of the ASME Journal of Mechanical Design 129 1170 1178 November 2007
- Crolla, D.A. Ren, Q. ElDemerdash, S. Yu, F. “Controller Design for Hybrid Vehicles - State of the Art Review” IEEE Vehicle Power and Propulsion Conference Harbin, China September 3 5 2008
- Akehurst, S. “The Design of the Milner CVT using Simulation Based Design of Experiments,” SAE Int. J. Engines 2 1 1508 1519 2008 10.4271/2009-01-1539