Shape Study for a Low-Air Resistance Air Deflector - The Second Report

950633

02/01/1995

Event
International Congress & Exposition
Authors Abstract
Content
We reported, in our first report1), the study of shapes of air deflectors that have strong yawing angle characteristics for the air resistance encountered when vehicles are running at high speed, taking into account the ambient wind.
However, it is rarely the case that the optimum shape of air deflector, which was obtained and reported in our first report, is directly adopted for practical use.
This paper reports the results of measurement tests on how the air resistance increases (worsens) when an air deflector is mounted on the cab of a vehicle: in the case when the air deflector was slightly changed on the same vehicle; or when the parameters of the vehicle (the height of the rear body) were changed for the same air deflector.
We obtained the following results:
Considerations and adjustments are required not to allow flows passing over upper and side surfaces of the air deflector to hit the front surface of the rear body.
Further, the fuel consumption under the above conditions was also estimated by simulation.
Meta TagsDetails
DOI
https://doi.org/10.4271/950633
Pages
10
Citation
Fujimoto, T., Niinuma, A., and Sakai, K., "Shape Study for a Low-Air Resistance Air Deflector - The Second Report," SAE Technical Paper 950633, 1995, https://doi.org/10.4271/950633.
Additional Details
Publisher
Published
Feb 1, 1995
Product Code
950633
Content Type
Technical Paper
Language
English