4th
June 2009 - Brake
Manufacturers Council (BMC) releases Enhanced BEEP® Certification
Program for Replacement friction materials
As the only industry-approved and peer-reviewed brake lining
certification, the BMC improved the Brake Effective Evaluation Procedure
(BEEP®) program by including the SAE J2784 - FMVSS 135 inertia
dynamometer test procedure to assess the BEEP® pass/fail criteria.
As Rick Jamison, CEO ABS
Friction Corporation and Chairperson of BMC Friction Committee, stated
“that these continuous efforts from the BMC align with the government’s
strategic framework outlined on NHTSA Docket No. 2008-0113 which states
that the product design should be measured against accepted and
voluntary product industry standards."
The core of the enhancement is the upgrade to utilize the new SAE J2784
―FMVSS 135 inertia dynamometer test procedure. The J2784 was developed
under a collaboration effort with the SAE Brake Dynamometer Test
Committee. One of the features of the SAE J2784 test procedure is that
it allows the evaluation of vehicle braking for ABS/Electronic Brake
Proportioning when used in conjunction with the appropriate vehicle
modeling. Other main technical benefits of the SAE J2784 are:
| ▫ |
Follows the
mandate from the FMVSS 135 of doing "best driver effort"
brake applications with brake pedal (equivalent to brake
pressure on the dynamometer) fully applied typically in less
than one second |
| ▫ |
The test
sequence better reproduces the lining conditioning which is
critical to FMVSS performance |
| ▫ |
Single-ended
test than enables the assessment without the influence of a
reference friction material on the other axle and precludes
the limitations of current dual-ended setups. Additionally,
single-ended allows reliable testing for braking conditions
at high deceleration levels as the FMVSS 105 and 135 vehicle
tests are |
| ▫ |
Includes all
the test sections from the vehicle protocol during
inertia-dynamometer testing (regular and high speed
effectiveness at full and light load; failed hydraulic for
diagonal or front-to-rear split systems, failed booster'
parking brake for rear or drum-in-hat systems; and
temperature assessment for fade, hot performance, and brake
recovery |
The BMC validated the BEEP®
model with fully-instrumented vehicles on FMVSS-compliant proving
grounds and laboratory tests using OE and aftermarket friction materials
of known and different qualities. The BMC's Technical Steering Committee
reviewed the test results and, in combination with their individual
experiences and testing activities, provided expert feedback to the
program. This structured and permanent peer review keeps the model
valid, relevant and current.
The BEEP® Certification program leverages a group of independent but
synchronized entities (BMC, SAE-PRI, and Link Engineering) that
specialize on particular and complementing activities with the ultimate
goal of improving the quality and safety of friction products installed
on vehicles that drive the United States' roads every day. This
enhancement truly keeps the BEEP® certification current with all new
technologies use on vehicle brake systems and it is the right thing to
do for the American driver and has the full support of highly-recognized
technical bodies and services.
| Tim Duncan |
| Vice President, Test
Operation of Link Engineering and Co-Chair of the BMC's Technical
Steering Committee |
|
t.duncan@linkeng.com |
|
Tel#: +1
313 933-4900 |
Source: Link
Engineering Press Release