Comparison of Heavy Truck Foundation Brake Performance Measured with an Inertia Brake Dynamometer and Analyses of Brake Output Responses to Dynamic Pressure Inputs Transportation Research Center, Incorporated

Format:

Conference/Event

Author/Creator:

Hoover, Richard L., author.

Conference Name:

2005 SAE Commercial Vehicle Engineering Conference (2005-11-01 : Rosemont, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2005

Summary:

In support of NHTSA's studies of heavy truck brake types and their effects on vehicle stopping performance and stability, the NHTSA Vehicle Research and Test Center (VRTC) has evaluated four foundation brake types on their Greening Brake Dynamometer. Several sample assemblies of each type of brake were tested to better understand variability. Braking tests were run under the "Laboratory Test Procedure for FMVSS 121D Air Brake Systems - Dynamometer" (TP- 121D-01) procedures. Afterward, the test scope was expanded to include higher speeds and higher severity conditions than those specified Test Procedure. This paper reports on the differences in braking effectiveness between two traditional S-Cam air brake types and two recently introduced Air Disc brake types. Burnish procedure trends are briefly discussed and compared. Responses of the pneumatic brakes to both constant-pressure and dynamic inputs are also compared and discussed. New statistical methods are introduced to compare brake effectiveness over a broad range of pressures

Notes:

Vendor supplied data

Publisher Number:

2005-01-3611

Access Restriction:

Restricted for use by site license