This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Computational Fluid Dynamic Analysis of a Generic 2 Truck Platoon
Technical Paper
2016-01-8008
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A Computational Fluid Dynamics (CFD) study was completed to characterize the fuel consumption in terms of the separation distance of a Driver-Assistive-Truck-Platooning (DATP). The DATP system considered utilizes radar and GPS for a redundant range measurement, paired with Vehicle to Vehicle (V2V) communications to enable regulation of the longitudinal distance between the pair of trucks without acceleration input from the rear driver. The linkage of information between the trucks promotes increased safety between the following trucks, while improving their fuel economy. The results from this study are compared to previous works. Preliminary analysis of the system indicated that the fuel economy of both trucks increases dramatically as the separation distance diminishes.
Additionally, an SAE Type-II fuel economy test complying with the (1986) SAE J1321 standard was completed to correlate the computational studies. Tests at separation distances of 30ft, 40ft, 50ft, 75ft and 150ft were conducted to examine the predicted trend between vehicle separation and drag reduction. Results from the fuel economy tests indicate that while the overall performance of the platoon monotonically improves as separation distance diminishes, the rear truck exhibits an unanticipated trend. Potential explanations for the rear truck’s trend are also presented, including lateral offset and thermodynamic properties of the engine.
Recommended Content
Authors
Citation
Humphreys, H. and Bevly, D., "Computational Fluid Dynamic Analysis of a Generic 2 Truck Platoon," SAE Technical Paper 2016-01-8008, 2016, https://doi.org/10.4271/2016-01-8008.Also In
References
- American Trucking Association American Trucking Trends ATA 2015 http://www.trucking.org/article.aspx?uid=d62a253d-b830-4fa3-b069-f7f8ff5d40df Jul. 2016
- Torrey W.F. IV , and Murray , D. An Analysis of the Operational Costs of Trucking: A 2014 Update ATRI 2014 Jul. 2016
- Agogino , A. , Goebel , K. , and Alag , S. Intelligent sensor validation and sensor fusion for reliability and safety enhancement in vehicle control Inst. Transport. Studies Univ. California, Berkeley 1995 http://www.path.berkeley.edu/sites/default/files/publications/PRR-95-40.pdf Jul. 2016
- SAE International Surface Vehicle Recommended Practice Taxonomy and Definitions for Terms Related to On-Road Motor Vehicle Automated Driving Systems SAE Standard J3016 Jan. 2014
- Davila , A. SARTRE Report on Fuel Consumption Technical Report for European Commission under the Framework 7 Programme Project 233683 Deliverable 4.3 Ricardo UK Limited Cambridge, UK 2013 http://www.sartre-project.eu/en/publications/Documents/SARTRE_4_003_PU.pdf Jul. 2016
- Bonnet , C. and Fritz , H. Fuel Consumption Reduction Experienced by Two Promote-Chauffeur Trucks in Electronic Towbar Operation presented in the Proceedings of the 7th World Congress Conference on Intelligent Systems Turin, Italy 2000
- Bonnet , C. and Fritz , H. Fuel Consumption Reduction in a Platoon: Experimental Results with two Electronically Coupled Trucks at Close Spacing SAE Technical Paper 2000-01-3056 2000 10.4271/2000-01-3056
- Lammert , M.P. , Duran , A. , Diez , J. , Burton , K. , and Nicholson , A. Effect of Platooning on Fuel Consumption of Class 8 Vehicles Over a Range of Speeds, Following Distances, and Mass SAE Int. J. Commer. Veh. 7 2 626 639 2014 10.4271/2014-01-2438
- Federal Highway Administration Federal Highway Adminstration No. DTFH61-13-R-00011 Exploratory Advanced Research Program https://www.fbo.gov/index?s=opportunity&mode=form&id=70cff813a8c898c9f4e53a023f284a2f&tab=core&_cview=1 Jul. 2016
- ANSYS Inc. ANSYS FLUENT http://www.ansys.com/Products/Fluids/ANSYS-Fluent Jul. 2016
- Peterbilt Trucks Inc. Peterbilt 579 Jul. 2016
- Ahmed , S. , Ramm , G. , and Faltin , G. Some Salient Features Of The Time-Averaged Ground Vehicle Wake SAE Technical Paper 840300 1984 10.4271/840300
- ANSYS Inc. FLUENT Theory Guide http://www.afs.enea.it/project/neptunius/docs/fluent/html/th/main_pre.htm Jul. 2016
- Jones , W. P. . and Launder , B. E. The Prediction of Laminatization with a Two-Equation Model of Turbulence International Journal of Heat and Mass Transfer 15 301 314 1972
- Yoshida , J. , Sugimachi , T. , Fukao , Y. , and Suzuki , Y. Autonomous Driving of a Truck Based on Path following Control presented at 10th Int. Symposium on Advanced Vehicle Control UK August 22-26, 2010
- Nowakowski , C. , Shladover , S.E. , and Thompson , D. Cooperative Adaptive Cruise Control (CACC) For Truck Platooning: Operational Concept Alternatives https://trid.trb.org/view.aspx?id=1363792 Jul. 2016
- SAE International Surface Vehicle Recommended Practice Fuel Consumption Test Procedure - Type II SAE Standard J1321 Feb. 2012
- U.S. Environmental Protection Agency Smartway https://www.epa.gov/smartway Jul. 2016