This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Impact and Sensitivity of Vehicle Design Parameters on Fuel Economy Estimates
Technical Paper
2010-01-0734
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The U.S. Environmental Protection Agency (EPA) has several methods in use to determine the overall fuel economy of a vehicle which is one of the mandatory fields on the Monroney sticker (better known as window sticker) of new cars and trucks. The fuel economy of a typical vehicle depends on many design properties physically known as the inertial-, wind- and rolling resistance. Each of these resistive forces is determined by several key design parameter (such as mass, frontal area, drag coefficient and rolling resistance coefficient) which are predetermined quite early in the design process. These design parameters, to a large extent, cannot freely be determined, are considerably co-dependent and have a large amount of interaction with other vehicle properties including overall vehicle costs. To optimize the design, careful consideration of the cost/benefit analysis for each of the design parameters must be made.
A simplified model was developed to calculate various vehicle driving cycles and to study the sensitivity of assorted key design parameters on the fuel economy estimates. Different vehicles representing different categories (a typical light-duty pick-up truck, a mid-size sedan, and an all-electric vehicle) were benchmarked and vehicle parameter sensitivities with regard to the various driving cycles have been determined. Furthermore, fuel economy improvements through energy regeneration (braking) have been addressed.
Recommended Content
Authors
Citation
Yanni, T. and Venhovens, P., "Impact and Sensitivity of Vehicle Design Parameters on Fuel Economy Estimates," SAE Technical Paper 2010-01-0734, 2010, https://doi.org/10.4271/2010-01-0734.Also In
Advances in Alternative Energy and Fuels for the Transportation Sector, 2010
Number: SP-2292; Published: 2010-04-13
Number: SP-2292; Published: 2010-04-13
References
- http://www.transportation.anl.gov/modeling_simulation/PSAT/index.html
- http://www.avl.com/
- Sovran, G. Blaser, D. “A Contribution to Understanding Automotive Fuel Economy and Its Limits,” SAE Technical Paper 2003-01-2070 2003
- “Tires and Passenger Vehicle Fuel Economy, Informing Consumers, Improving Performance” TRB Special Report 286 0-309-09421-6
- An, F. Santini, D.J. “Mass Impacts on Fuel Economies of Conventional vs. Hybrid Electric Vehicles,” SAE Technical Paper 2004-01-0572 , SAE Transactions 113 258 276 2004
- Reynolds, C. Kandlikar, M. “How Hybrid-Electric Vehicles are Different from Conventional Vehicles: The Effect of Weight and Power on Fuel Consumption” Environ. Res. Lett. 2 January-March 2007
- Pagerit, S. Sharer, P. Rousseau, A. “Fuel Economy Sensitivity to Vehicle Mass for Advanced Vehicle Powertrains,” SAE Technical Paper 2006-01-0665 2006
- Determination of Weight Elasticity of Fuel Economy for Conventional ICE Vehicles, Hybrid Vehicles and Fuel Cell Vehicles Report 55510 Forschungsgesellschaft Kraftfahrwesen mbH Aachen
- Farrington R. Rugh J. “Impact of Vehicle Air-Conditioning on Fuel Economy, Tailpipe Emissions, and Electric Vehicle Range” NREL/CP-540-28960 October 31 2000
- Malen Donald E Reddy Kundan “Preliminary Vehicle Mass Estimation Using Empirical Subsystem Influence Coefficients” University of Michigan 2007
- Bixel, R.A. Heydinger, G.J. Durisek, N.J. Guenther, D.A. et al. “Developments in Vehicle Center of Gravity and Inertial Parameter Estimation and Measurement,” SAE Technical Paper 950356 1995
- Allen, R.W. Klyde, D.H. Rosenthal, T.J. Smith, D.M. “Estimation of Passenger Vehicle Inertial Properties and Their Effect on Stability and Handling,” SAE Technical Paper 2003-01-0966 2003