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Criteria for Choosing and Evaluating Aerodynamic Devices for Reducing Fuel Consumption of Trucks
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Sector:
Event:
National West Coast Meeting
Language:
English
Abstract
A general approach to the decision to use an aerodynamic device is outlined with the objective to increase profits within the framework of a corporate priority system. Many factors affect this economic decision. The process by which the decision is reached involves both a vehicle and an economic model. Three major considerations are: a) the aerodynamic performance of a proposed device, especially with significant cross winds, b) the structural characteristics of the device with regard to failure model, and the impact of the device of tractor or trailer body, and c) whether the device is tractor or trailer mounted.
It is noted that the attachment of a device is generally associated with a change in the equilibrium operating speed where the power required equals the power available. This change can significantly reduce the potential fuel savings to an impractical level, especially if the device has a poor cross wind behavior. The difficulty of conducting reliable fleet tests is discussed. Such tests can be very time-consuming while resulting in uncertain conclusions. It is recommended that a controlled test used combined with a realistic appraisal of changes to be expected in fleet operation.
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Authors
Citation
Bauer, P. and Servais, R., "Criteria for Choosing and Evaluating Aerodynamic Devices for Reducing Fuel Consumption of Trucks," SAE Technical Paper 750701, 1975, https://doi.org/10.4271/750701.Also In
References
- Bauer, P.T. Servais, R.A. “An Experimental and Analytical Investigation of Truck Aerodynamics” Reduction of the Aerodynamic Drag of Trucks Conference Cal. Tech. October 10-11 1974
- Servais, R.A. Bauer, P.T. “Aerodynamic Devices Can Significantly Reduce Fuel Consumption: Experience With the CECA Designs” SAE Paper 750707 SAE National West Coast Meeting August 11-14 1975
- Smith. G.L. “Commercial Vehicle Performance and Fuel Economy” SAE Paper SP-355 January 1973
- Buckley, F.T. “Evaluation of Aerodynamic Drag Effects on Truck Fuel Consumption by Wind-Tunnel Measurements” SAE-DOT Truck and Bus Fuel Economy Measurement Conference April 1975
- Wiley, N.C. “Test Procedure For Evaluating the Fuel Economy Effectiveness of Add-On Aerodynamic Devices in Rigid Chassis and Articulated Trucks SAE-DOT Truck and Bus Fuel Economy Measurement Conference April 1975