Clearance

from Wikipedia, the free encyclopedia

The clearance is called the distance between the brake pad and the brake disc z. B. in disc brake systems of motor vehicles . A distance between the brake lining and the brake disc is necessary so that the brake disc can run completely freely (and therefore unbraked) in the "brake released" state.

The clearance leads to an extension of the braking distance when braking . In the case of a hydraulic brake system, the time (the brake response time) to overcome this game is 0.1 to 0.2 seconds.

In order to shorten the braking distance, in the case of the Porsche Carrera 4 models with Porsche Stability Management (PSM) , for example, this clearance is virtually eliminated in the event of emergency braking by pre-filling the brake system.

The distance between the clutch facing and the flywheel or pressure plate in the single-disc dry clutch is also called the clearance. Here the clearance ensures the complete separation of the drive train between the engine and the transmission when the clutch is actuated.

literature

  • Max Bohner, Richard Fischer, Rolf Gscheidle: Expertise in automotive technology. 27th edition, Verlag Europa-Lehrmittel, Haan-Gruiten, 2001, ISBN 3-8085-2067-1
  • Kurt-Jürgen Berger, Michael Braunheim, Eckhard Brennecke: Technology automotive engineering. 1st edition, Verlag Gehlen, Bad Homburg vor der Höhe, 2000, ISBN 3-441-92250-6