Investigation of the Effect of Longitudinal Distance Between Two Cars on Fuel Consumption and Drag Coefficient

Document Type : Research Article

Authors

Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran

Abstract

According to the development of technology of automated highways, the platooning can be benefited for improvement in fuel consumption. Platooning has already been exercised in the nature and industry as an effective tool to reduce the drag coefficient. The goal of this article is to investigate the effect of longitudinal distance between two passenger cars on drag coefficient and hence the fuel consumption numerically and experimentally. It has already been shown by various investigators that a passenger car travelling in the wake of another car will experience a reduction in drag coefficient. The optimized distance and speed to attain the least drag coefficient and fuel consumption are reported. The car’s speeds of 70, 90 and 110 kilometers per hour have been examined in this study. To evaluate the numerical results, some field tests are done. A device which was particularly designed and fabricated to measure the fuel consumption was installed on a sedan midsize car. The results show that the car platooning with an optimized longitudinal distance between two cars can reduce the drag coefficient by 7 percent.

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References

[1] M. Zabat, S. Frascaroli, F.K. Browand, Drag Measurements on 2, 3 and 4 Car Platoons, in, SAE Technical Paper 940421, 1994.
[2] M. Zabat, N. Stabile, S. Frascaroli, F. Browand, The Aerodynamics Performance of Platoons: Final Report, California PATH research report, 1995.
[3] P. Hong, B. Marcu, F. Browand, A. Tucker, Drag Forces Experienced by Two, Full Scale Vehicles at Close Spacing, California PATH Research Report, 1998.
[4] A.F. Abdel Azim, A.F. Abdel Gawad, A Flow Visualization Study of the Aerodynamic Interference Between Passenger Cars, in, SAE Technical Paper 2000-01-0355, 2000.
[5] L. Tsuei, Ö. Savaş, Transient Aerodynamics of Vehicle Platoons During In-Line Oscillations, Journal of Wind Engineering and Industrial Aerodynamics, 89(13) (2001) 1085-1111.
[6] S. Watkins, G. Vino, The effect of vehicle spacing on the aerodynamics of a representative car shape, Journal of Wind Engineering and Industrial Aerodynamics, 96(6) (2008) 1232-1239.
[7] S.R. Ahmed, G. Ramm, G. Faltin, Some Salient Features Of The Time-Averaged Ground Vehicle Wake, in, SAE Technical Paper 840300, 1984.
[8] A. Dávila, M. Nombela, Sartre - Safe Road Trains for the Environment Reducing Fuel Consumption through lower Aerodynamic Drag Coefficient, in, SAE Technical Paper 2011-36-0060, 2011.
[9] A. Davila, E. del Pozo, E. Aramburu, A. Freixas, Environmental Benefits of Vehicle Platooning, in, The Automotive Research Association of India, 2013.
[10] M. Davoodian, H. Nikfar, Investigation of the Effect of Windows Being Open or Closed on the Fuel Consumption of Sedan Cars, K. N. Toosi University of Technology, 2009 (In Persian).
[11] N. Rabiei, M. Mahmoudabadi, Investigation of the effect of longitudinal distance between two cars on fuel consumption and drag coefficient, K. N. Toosi University of Technology, 2016 (In Persian).
Amirkabir Journal of Mechanical Engineering
Volume 50, Issue 4
November and December 2018
Pages 893-902

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