Detail publikace

Vehicle ride height change due to radial expansion of tires

ČAVOJ, O. BLAŤÁK, O. HEJTMÁNEK, P. VANČURA, J.

Originální název

Vehicle ride height change due to radial expansion of tires

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

In most cases, tire deformations caused by wheel rotation are not being considered in the development of vehicle aerodynamics. On the road, the tires radially expand with increasing speed, thus affecting the realistic ride height of a vehicle. This in turn often increases the real world aerodynamic drag compared to values obtained using CFD or a wind tunnel as the mass flow through relatively rough underbody increases with ground clearance. In this study, the on-road ride height increments were measured while running a vehicle in a straight line with fixed velocity and the aerodynamic lift of a vehicle was determined in a wind tunnel. Subsequently, the dependencies of ride heights on axle loads were obtained by loading the vehicle in standstill with ballast. By comparing the ride heights in high and very low velocities with expected vertical displacement caused purely by aerodynamic lift force as computed according to the ride height - axle load equations, the amount of ride height change due to tire radial expansion was determined.

Klíčová slova

vehicle aerodynamics, tire deformation, on-road measurements, laser displacement transducer

Autoři

ČAVOJ, O.; BLAŤÁK, O.; HEJTMÁNEK, P.; VANČURA, J.

Rok RIV

2015

Vydáno

5. 12. 2015

Nakladatel

ČVUT v Praze MECCA

Místo

Praha

ISSN

1214-0821

Periodikum

MECCA - Journal of Middle European Costruction and Design of Cars

Ročník

13

Číslo

2

Stát

Česká republika

Strany od

22

Strany do

27

Strany počet

6

URL

http://www.degruyter.com/view/j/mecdc.2015.13.issue-2/mecdc-2015-0008/mecdc-2015-0008.xml?format=INT

BibTex

@article{BUT127769,
  author="Ondřej {Čavoj} and Ondřej {Blaťák} and Petr {Hejtmánek} and Jan {Vančura}",
  title="Vehicle ride height change due to radial expansion of tires",
  journal="MECCA - Journal of Middle European Costruction and Design of Cars",
  year="2015",
  volume="13",
  number="2",
  pages="22--27",
  doi="10.1515/mecdc-2015-0008",
  issn="1214-0821",
  url="http://www.degruyter.com/view/j/mecdc.2015.13.issue-2/mecdc-2015-0008/mecdc-2015-0008.xml?format=INT"
}