BRAKE WEAR TESTING

Correlation Between Vehicle and Dynamometer Testing (Part 3 out of 3)

- By Fabio Squadrani, Senior Manager, Braking Systems in Applus IDIADA.

Modern braking systems development is moving towards the reduction of long tests on open roads, writes Fabio Squadrani, Senior Manager, Braking Systems in Applus IDIADA.

One of the most critical items when reducing the mileage on the open road is brake wear. This work answers a simple question about how to simulate brake patterns in dynamometers to reduce the mileage of brake tests to be performed on a vehicle. In this first part of this article, a set of data coming from a brake durability test was analysed. Particularly, this is needed to define the target wear value for the brake dynamometer procedure. In the extract of the article, the brake dynamometer test procedure was laid down. Finally, this part will deal with the wear validation.

4. WEAR VALIDATION

4.1 Validation Procedure Description

As mentioned in the 2nd part of this article, test procedure is made of a combination of different temperatures profiles. Each temperature profile has been defined in order to be representative of the typical usage in a Mojacar route, adding as much as possible the effect of the limited stochastic driving style distribution in Mojacar.