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Development of a valve and optimization of a tube for self-inflating tire

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Abstract

Worldwide, the tire market requires safe and eco-friendly tires. In this study, a self-inflating tire (SIT) was studied and manufactured. Self-inflating tire refers to a technique for maintaining appropriate tire pressure. An internal regulator senses when tire inflation pressure has dropped below the set air pressure. The tire boosts air through the valve when rolling and compressed air enters into the tire. This procedure keeps the tire air pressure at an appropriate level and increases tire safety. In this study, a regulator was used as a negative-pressure system. A check valve was selected the minute flow check valve depending on the shape of the configured system. In addition, the material of the tube was developed with excellent physical properties and resistances (elastic rebound, working temperature, etc.) owing to its complete compression and restoration. A tube performance tester was developed and a computer aided engineering (CAE) model was modeled for comparison with the test results. Using the tester and model, it was possible to optimize the shape of the tube and regulator. Finally, the reliability of the study was verified through the prototype test. The developed equipment and systems can be used for the manufacture of high-performance and safe tires.

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Abbreviations

a:

half width of the channel or radius of the tube

a 0 :

half width of the channel or radius of the tube at inlet

B:

amplitude

C:

wave speed

D a :

Darcy number

H:

wall coordinate of peristaltic wave

L:

length of the channel or tube

P:

pressure rise

ΔP:

dimensionless pressure rise

Q:

instantaneous volume flow rate

\(\overline Q \) :

time mean volume rate of flow

t:

time

U B :

slip velocity

U porous :

velocity in the permeable boundary

R, Θ, Z :

cylindrical polar coordinates in laboratory frame

R, θ, z :

cylindrical polar coordinates in wave frame

λ:

wave length

α:

slip parameter

Δx :

spring deformation

x 1 :

increased air pressure

x 2 :

tube external diameter

β in :

input air pressure

β out :

output air pressure

y i :

one of the measures

\(\overline y \) :

average of y i

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Ajou University, Gyeonggi, 16499, Korea

    Myeong Jun Kim, Tae Won Park & In Kyeong Hwang

  2. KUMHO Tire, 215-21 Saeun-ro, Giheung-gu, Yongin-si, Gyeonggi, 17076, Korea

    In Chul Sung, Hyoung Seok Kim & Sang Do Na

  3. KATECH, 303 Pungse-ro, Pungse-myeon, Dongnam-gu, Cheonan-si, Chungnam, 31214, Korea

    Sung Pil Jung & Tae Hee Lee

  4. Youil, 19, Mujeonggongdan-gil, Mujeong-myeon, Damyang-gun, Jeonnam, 57360, Korea

    Kyung Up Mah

  5. Corechips, 33 Omokcheon-ro 132beon-gil, Gwonseon-gu, Suwon-si, Gyeonggi, 16642, Korea

    Jae Yun Lee

Authors
  1. Myeong Jun Kim
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  2. Tae Won Park
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  3. In Kyeong Hwang
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  4. In Chul Sung
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  5. Hyoung Seok Kim
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  6. Sang Do Na
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  7. Sung Pil Jung
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  8. Tae Hee Lee
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  9. Kyung Up Mah
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  10. Jae Yun Lee
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Corresponding author

Correspondence to Tae Won Park.

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Kim, M.J., Park, T.W., Hwang, I.K. et al. Development of a valve and optimization of a tube for self-inflating tire. Int.J Automot. Technol. 18, 973–981 (2017). https://doi.org/10.1007/s12239-017-0095-4

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  • DOI: https://doi.org/10.1007/s12239-017-0095-4

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