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I asked Thomas Hall, who is a Brake System Engineer and writer for BRAKE & FRONT END the question:
“Will poor quality brake pads that do not have the same friction value or profile change how the ABS/TCS or ESC work?”
His answer is in the May issue of BRAKE & FRONT END. Here is a small sample:
By changing the pads to a material that has a different friction value, you have changed half the equation the system is counting on.
As a result, the system will not get the torque reaction it expects for an optimum result. All of these systems operate on what is called a feedback control principle. In simple terms, this means the system calculates its best estimate of the required amount of correction and applies it. It then watches to see if that estimate was effective.
If it sees that it did not get the job done, it calculates another correction and applies again. This cycle continues throughout the event. By the way, the system is checking its progress at the rate of approximately 100 times each second and employing corrective actions perhaps around 10-15 times a second in multiple directions.
When the friction value changes, which it will most certainly do with different friction material, the system will not get to the best correction as quickly as it was capable of when it had all of the parts it was expecting. In most cases, the system will learn and correct for the “error” the new pads have introduced. It just will take more tries to get there and take longer. This results in reduced efficiency by some measurable factor…
WOW! You will not find this in any other magazine. The magazine is still 75 years old and still changing and challenging the industry. Why? our readers demand it.
More in the May issue
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Monday, May 14, 2007
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