Effects of Variable Speed Supercharging Using a Continuously Variable Planetary on Fuel Economy and Low Speed Torque

Event
SAE 2012 International Powertrains, Fuels & Lubricants Meeting
Authors Abstract
Content
This paper describes advances in variable speed supercharging, including benefits for both fuel economy and low speed torque improvement. This work is an extension of the work described in SAE Paper 2012-01-0704 [8]. Using test stand data and state-of-the-art vehicle simulation software, a NuVinci continuously variable planetary (CVP) transmission driving an Eaton R410 supercharger on a 2.2 liter diesel was compared to the same base engine/vehicle with a turbocharger to calculate vehicle fuel economy. The diesel engine was tuned for Tier 2 Bin 5 emissions. Results are presented using several standard drive cycles.
A Ford Mustang equipped with a 4.6 liter SI engine and prototype variable speed supercharger has also been constructed and tested, showing low speed torque increases of up to 30%. Dynamometer test results from this effort are presented. The combined results illustrate the promise of variable speed supercharging as a viable option for the next generation of engines.
Meta TagsDetails
DOI
https://doi.org/10.4271/2012-01-1737
Pages
12
Citation
McBroom, S., Smithson, R., Urista, R., and Chadwell, C., "Effects of Variable Speed Supercharging Using a Continuously Variable Planetary on Fuel Economy and Low Speed Torque," Engines 5(4):1717-1728, 2012, https://doi.org/10.4271/2012-01-1737.
Additional Details
Publisher
Published
Sep 10, 2012
Product Code
2012-01-1737
Content Type
Journal Article
Language
English