Adapting On-vehicle Brake Drag Testing to a Bench Dynamometer Honda R&D Americas Incorporated

Format:

Conference/Event

Author/Creator:

Krough, Krough, author.

Contributor:

Bray, Patrick.

Dyar, Lorne

Conference Name:

SAE 2011 Annual Brake Colloquium And Engineering Display (2011-09-18 : New Orleans, Louisiana, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Fuel economy can be increased by reducing running resistance or mechanical drag. Since modern disk brake systems produce mechanical drag, a component-level test method was developed to measure and understand this effect.Measuring brake drag typically requires a vehicle test on a chassis dynamometer, and an engineer must distinguish brake drag from other sources of drag (e.g., tire, wheel bearing, transmission, and others). This method often generates brake drag data that lacks in resolution, accuracy, and repeatability. Alternatively, a new method of measuring drag on a traditional brake dynamometer has been developed that yields statistically relevant and repeatable results.To accurately measure brake drag on a brake dynamometer, pad temperature, wheel bearing temperature, and caliper experience pressure need to be controlled. Also, depending on the type of wheel bearing used, a correction factor for bearing drag may be needed. Finally, the method by which the brake pads are conditioned, using burnish stops or a specified test mode, and the amount of pad taper wear generated needs to be understood to attain reliable results. With these items in mind, a process was developed to more precisely measure component level drag on a traditional brake dynamometer

Notes:

Vendor supplied data

Publisher Number:

2011-01-2376

Access Restriction:

Restricted for use by site license