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Comparison of Operational Characteristics in Power Split Continuously Variable Transmissions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 31, 2006 by SAE International in United States
Annotation ability available
Continuously variable transmissions (CVT) provide seamless shifting in vehicle operation, allowing the engine to operate at a nominal speed range resulting in lower fuel consumption and emissions. However, typical CVTs suffer from either low shaft-to-shaft efficiency or low torque handling capabilities. The power split CVT combines the variability of the CVT with the efficiency of a mechanical transmission, providing potential benefits for both on road and off road vehicles. By modifying the architecture and layout of a power split transmission, the characteristics and maximum speed of the vehicle drive cycle can be altered. This paper will present a comparison between the different architectures of power split transmissions utilizing hydraulic units as the variators, with a focus on efficiency, control effort, and system complexity. Applications based on the characteristics of the specific transmission architectures will be suggested.
CitationCarl, B., Ivantysynova, M., and Williams, K., "Comparison of Operational Characteristics in Power Split Continuously Variable Transmissions," SAE Technical Paper 2006-01-3468, 2006, https://doi.org/10.4271/2006-01-3468.
Fluid Power for Mobile, In-Plant, Field and Manufacturing
Number: SP-2054; Published: 2006-10-31
Number: SP-2054; Published: 2006-10-31
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