A Study of Oil Seals for Shock Absorbers of Automotive Suspensions

Ohtake, Yoshio; Kawahara, Yoshio; Hirabayashi, Hiroshi; Yamamoto, Yasuo; Iida, Susumu

doi:10.4271/810204

Cited by 2 publications

(1 citation statement)

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“…Thus, leakage is a critical factor for oil seals. Earlier studies adopted experimental approaches to evaluate the sealing characteristics of reciprocating oil seals (Ohtake et al , 1981; Suetsugu et al , 1989; Yukimasa et al , 1982). Ohtake et al (1981) pointed out that the skeleton reciprocating oil seal (Type D) has superior dust-resistant characteristics and is suitable for the monotube type absorbers which are extensively applied for automotive front axles.…”

Section: Introductionmentioning

confidence: 99%

Mixed EHL numerical analysis and leakage experiment of skeleton reciprocating oil seal

Yang

Sun

et al. 2021

ILT

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Purpose This paper aims to present the mixed elastohydrodynamic lubrication (EHL) model and obtain the leakage characteristics for the skeleton reciprocating oil seal. Design/methodology/approach The model consists of a finite element analysis of the contact pressure, a fluid mechanics analysis of the fluid film, a contact analysis of the asperity contact pressure, a deformation analysis of the seal lip and an iterative numerical simulation process. Findings Simulation results show that the leakage is in direct proportion to the seal roughness and speed, and in inverse proportion to the fluid viscosity. Comparisons with the experimental results verify the validity of the mixed EHL model. Originality/value This study provides a helpful method to calculate the leakage of the skeleton reciprocating oil seal, which shortens its development cycles.

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