Downspeeding and Supercharging a Diesel Passenger Car for Increased Fuel Economy

2012-01-0704

04/16/2012

Event
SAE 2012 World Congress & Exhibition
Authors Abstract
Content
The effects of downspeeding and supercharging a passenger car diesel engine were studied through laboratory investigation and vehicle simulation. Changes in the engine operating range, transmission gearing, and shift schedule resulted in improved fuel consumption relative to the baseline turbocharged vehicle while maintaining performance and drivability metrics. A shift schedule optimization technique resulted in fuel economy gains of up to 12% along with a corresponding reduction in transmission shift frequency of up to 55% relative to the baseline turbocharged configuration. First gear acceleration, top gear passing, and 0-60 mph acceleration of the baseline turbocharged vehicle were retained for the downsped supercharged configuration.
Meta TagsDetails
DOI
https://doi.org/10.4271/2012-01-0704
Pages
13
Citation
Ostrowski, G., Neely, G., Chadwell, C., Mehta, D. et al., "Downspeeding and Supercharging a Diesel Passenger Car for Increased Fuel Economy," SAE Technical Paper 2012-01-0704, 2012, https://doi.org/10.4271/2012-01-0704.
Additional Details
Publisher
Published
Apr 16, 2012
Product Code
2012-01-0704
Content Type
Technical Paper
Language
English