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Car Fuel Efficiency-Where Next
Technical Paper
912521
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Language:
English
Abstract
A validated model which attributes fuel consumption to 11 components of a vehicle's energy loss, has been applied to investigate the benefits from improvements in design parameters which can reduce fuel use. Sensitivity analysis of a large, family sized car, gives the ranked order of design variables for improving fuel consumption as: vehicle mass, idle fuel rate or engine friction (or both) and rolling resistance for urban driving. Amongst the remaining parameters aerodynamic drag is lowly ranked but, in highway driving, it ranks first along with vehicle mass and rolling resistance, thus indicating that the proportion of urban to highway driving, which will vary from country to country is important. Driving conditions should be optimised along with vehicle design for best energy conservation and greenhouse gas mitigation.
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Authors
Citation
Watson, H. and Liu, Y., "Car Fuel Efficiency-Where Next," SAE Technical Paper 912521, 1991.Also In
References
- WATSON, H.C. The prediction of emissions and fuel consumption in real driving conditions Journal S.A.E. - Aust. 39 No. 2 60 67 1979
- WATSON, H.C. ALIMORADIAN, B. A transient engine mapping model for analysing and predicting fuel consumption and emissions European Automobile Engineers Committee, 2nd Intl Conf. on new developments in powertrain and chassis engineering Strasbourg 27 36 1989
- LIU, Y. Improvement of a cars fuel efficiency Ph.D Thesis, in preparation, University of Melbourne 1991
- WATSON, H.C. MILKINS, E.E. HOLYOAKE, P.A. The Effect of Cold Starting on Fuel Consumption and Vehicle Component Temperatures 1st I.A.V.D. Conf., Paper 16 1 16 1984
- WATSON, H.C. MILKINS, E.E. An international drive cycle Proc. 21st FISITA Congress, Belgrade, Paper 865042 405 414 1986
- WATSON, H.C. MILKINS E.E LANSELL S. CHALLENGER K. A before and after study of the change to unleaded gasoline - test results from EPA and other cycles SAE. paper 900150 1 28 1990
- CLOSE, W.H. KHATIB, E.T. SAE-A's truck fuel conservation program S.A.E.'s Aust., China, Indon., Korea, Japan and U.S.A. 4th International Conference on Automotive Engineering, paper 871237 l 12 1987
- BONTHON, A. CVT-efficiency measured under dynamic running conditions SAE paper 8505869 1985
- RADTKE, R.R. UNNEWEHR, L.E. FREEDMAN, R.J. Optimization of a continuously variable transmission with emission constraints SAE paper 810107
- WATSON, H.C. Prospects in car design and alternative fuels to reduce oil demand and greenhouse gas emissions Report T98/91, Dept. Mechanical and manufacturing Engineering, University of Melbourne 1990
- GRAVES, J.W. Field trial of dynamic advice to reduce fuel used by traffic Final Report Project 894, D.P.I.E., Australian Government NERDD Program 1991