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.
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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
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DOI: https://doi.org/10.1007/978-3-319-45447-4_24
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