Replacement Parts feature
Serious about Safety
Passionate about Performance
Delphi is a full service, global brake supplier providing components, modules and complete
brake/chassis systems to the automotive industry.
D
emands for higher performance
and overall weight reduction
on modern vehicles have led to
material changes, resulting in increased use
of supplementary processes to counteract
vibrations. Noise fixes include shims, slots,
chamfers and underlayers within the friction
material. For example, Delphi carefully
selects friction materials, using more than
19 different compounds in their brake pad
product line to ensure the closest possible
match to OE comfort characteristics and
performance. These compounds are
developed to provide consistently high
levels of performance. All Delphi brake
pads incorporate underlayer technology.
This is a process used by many OE
manufacturers to dampen noise-producing
vibrations and ensure a higher bonding
strength with the pad back plate. Delphi
brake pads also feature shims, slots and
chamfers that match OE specifications and
provide superior performance and durability.
All Delphi pads are designed to be
compatible with the performance levels of
original equipment parts. Our commitment
is to maintain the highest standards of
braking performance.
You never know when you are going to
need to use your brakes in an emergency.
And when you do, you want to be assured
that they will not let you down at the wrong
moment. That is why we subject Delphi
brake pad technology to the most vigorous
testing, designed to exceed the demands
of modern driving. We test our brake pads
in many different driving conditions which
means you can rely on Delphi brake pads.
Vigorous Friction
Testing
Stopping Distance
to their limit. It is unlikely that brake pads
would be subjected to such extreme forces
during normal driving conditions. Stopping
distance is measured using the AMS test
carried out on a dynamometer. The result
is the average of 10 stops, carried out
at speeds of 68mph down to 3mph with
15 second intervals between stops. During
the test, friction surface temperature can
reach up to 600 degrees. Results from the
AMS 1st cycle can be used to determine
the average stopping distance achieved
during the test. The results in the chart
below show the average stopping distance
in metres of Delphi, OES products and
leading competitor’s equivalent brake pads.
The coefficient of friction is a measure which
represents the amount of friction between two
surfaces.
For example:
Rubber on ice = Low coefficient of friction
Rubber on tarmac = High coefficient of friction
Independent performance testing has proven
that Delphi pads perform as well as the OES
product*.
The testing was conducted by an
independent test house – BTI, Brake Testing
International. Delphi pads and the OES
product were tested to SAE J2522 standard
(AK Master). The test assesses the behaviour
of friction material through different test
cycles under varying pressure, temperature
and speed combinations.
The results in the panel below show the
Delphi pads versus the OES product and two
competitors. These demonstrate the close
performance of the Delphi pads against the
OES product and the superiority of the Delphi
pads over their competitors.
OES
The OES brake pad has successfully
passed all the tests after vigorous testing.
It shows some wear but is still roadworthy.
Verdict: Passed
Delphi
The Delphi brake pad shows similar results
to the OES pad after extensive testing.
Verdict: Passed
Competitor
This brake pad shows serious faults after
undergoing the same tests the Delphi pad
was subjected to.
Verdict: Failed
AK Master Test
AMS tests completed by Brake Testing
International have verified the excellent
stopping power of Delphi brake pads.
These industry standard tests are carried
out at extreme conditions pushing the pads
The AK Master test is used to measure
friction performance under different braking
conditions. These conditions are simulated
on a dynamometer and the coefficient of
friction is measured. As the graphs show,
the coefficient varies by application.
| words in action
46
october 2014