CVT Split Power Transmissions, A Configuration Versus Performance Study with an Emphasis on the Hydromechanical Type

2002-01-0589

03/04/2002

Event
SAE 2002 World Congress & Exhibition
Authors Abstract
Content
Split power transmissions are often a viable power path for continuously variable powertrains. The planetary gear set is the central mechanism of these powerpaths which creates the possibility for numerous configurations. Determining the right configuration for a specific application can thus be complicated if the designer does not have an easy way to evaluate each configuration. This paper will address this issue. The different split power configurations are explored. Speed ratio and torque ratio formulas for the different configurations are introduced. An efficient and simple method to determine positive and negative power flow is also demonstrated. The development of tractive effort curves is discussed as a methodology to determine the theoretical performance of any configuration with an emphasis on the use of hydraulics as the variator.
Meta TagsDetails
DOI
https://doi.org/10.4271/2002-01-0589
Pages
14
Citation
Pohl, B., "CVT Split Power Transmissions, A Configuration Versus Performance Study with an Emphasis on the Hydromechanical Type," SAE Technical Paper 2002-01-0589, 2002, https://doi.org/10.4271/2002-01-0589.
Additional Details
Publisher
Published
Mar 4, 2002
Product Code
2002-01-0589
Content Type
Technical Paper
Language
English