BRAKE FLUID - A CONTRIBUTION TO TRAFFIC SAFETY

BREMSFLUESSIGKEIT - EIN BEITRAG ZUR VERKEHRSSICHERHEIT

The braking equipment of powered vehicles requires special considerations for reasons of traffic safety. Testing specifications have been passed only for a few construction groups which make braking equipment. Experiments have shown that ageing of the brake fluid has a marked influence on the braking efficiency of the braking equipment. Existing brake fluids, because of their affinity to water, absorb the moisture content in the air to such an extent that their boiling temperature after 2 years of use in a vehicle drops to about 135 deg to 145 deg C. This produces the danger of air entrainment in the braking system when the brake is heating up. An investigation of brake fluids on 54 private vehicles in the framework of a main investigation according to paragraph 29 stvzo showed that for 32% of the vehicles checked the boiling temperature was below 155 deg C, for 26% between 155 and 175 deg C and for 42% above 175 deg C. In order to increase traffic safety it is necessary in the future to check other properties of brake fluids in addition to ageing. It is necessary therefore to develop suitable specifications. /TRRL/

  • Corporate Authors:

    VDI Nachrichten

    Postfach 1139, Graf-Recke-Strasse 84
    4 Dusseldorf 1,   Germany 
  • Authors:
    • Schmidt, P
  • Publication Date: 1977-11

Language

  • German

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00189381
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 28 1979 12:00AM