Abstract
One of the most important properties of brake fluids is their boiling point. A too low boiling point may permit the forming of vapor during frequent and/or severe braking. Hereby the brake fluid becomes compressible and the braking performance decreases.
There are standardized methods to measure the boiling point of brake fluids (SAE J1703, ASTM D 1120), but they are inadequate for every-day practice. An alternative method is measuring the water content of brake fluid and estimating its boiling point.
In this work the electric conductibility, the permittivity and the density had been correlated with the equilibrium reflux boiling points of DOT-3 and DOT-4 types of brake fluids which had controlled water content and had estimated the water content of brake fluids from more than 70 motor vehicles. It was found that the capacitive method provides more accurate results, since the conductive method is strongly influenced by the conductivity of water.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Chuantong, W., Katsunori, S.: A new method for on-line monitoring of brake fluid condition using an enclosed reference probe. Meas. Sci. Technol. 18(11), 3625–3635 (2007). IOPscience
Grant, M.: Brake Fluid for Classic British Cars. http://www.mossmotors.com
Kertay, N.: Féktelenül. Az Autótechnika fékfolyadéktesztje (Brakeless. The brake fluid test carried out by the ‘Autótechnika’ journal). Autótechnika 8, 16–17 (2010)
Kao, M.J., Tien, D.C., Jwo, C.S., Tsung, T.T.: The study of hydrophilic characteristics of ethylene glycol. In: 7th International Symposium on Measurement Technology and Intelligent Instruments, pp. 442–445 (2005). Institute of Physics Publishing Journal of Physics: Conference Series 13, Huddersfield
Zhang, J.B., Zhang, P.Y., Ma, K., Han, F., Chen, G.H., Wei, X.H.: Hydrogen bonding interactions between ethylene glycol and water: density, excess molar volume, and spectral study. Sci. China Ser B: Chem. 51(5), 420–426 (2008)
CFR 571.116 Standard No. 116 - Motor vehicle brake fluids
ISO 4925: Road vehicles - Specification of non-petroleum-based brake fluids for hydraulic systems
SAE International J1703: Motor Vehicle Brake Fluid
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer International Publishing Switzerland
About this paper
Cite this paper
Barabás, I., Todoruț, A., Cordoș, N. (2017). Estimation of Boiling Points of Brake Fluids. In: Chiru, A., Ispas, N. (eds) CONAT 2016 International Congress of Automotive and Transport Engineering. CONAT 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-45447-4_24
Download citation
DOI: https://doi.org/10.1007/978-3-319-45447-4_24
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-45446-7
Online ISBN: 978-3-319-45447-4
eBook Packages: EngineeringEngineering (R0)