A Dynamometer Investigation of Thermal Judder Federal-Mogul Technology

Format:

Conference/Event

Author/Creator:

Little, Edward, author.

Conference Name:

Annual Brake Colloquium And Engineering Display (1998-09-20 : San Francisco, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1998

Summary:

Thermal judder occurs when differential thermal expansion is experienced around the rotor during a brake application. A temporary circumferential disc thickness variation (DTV) is created which can lead to brake torque variation. The cause of the uneven heating of the rotor can be an imperfection; often a permanent DTV caused by periods of off-brakes contact between pad and disc. Using a dynamometer test combining dynamic disc thickness measurement and pyrometric techniques the evolution of thermal DTV may be studied. It can be demonstrated that increasing thermal DTV is accompanied by increasing brake torque variation. Hot spot formation is also evident but this is shown not be the primary cause of brake torque variation

Notes:

Vendor supplied data

Publisher Number:

982252

Access Restriction:

Restricted for use by site license