Process to determine the response pressure of a brake in a vehic

Details Process to determine the response pressure of a brake in a vehic Process to determine the response pressure of a brake in a vehic

1996-03-20

1997-10-28

Dombroske, George M.

Measuring and testing

Brake testing

73132, 340453, 36442601, B60T 800, B60T 828, G01L 528, R60T 1366

Patent

active

056819927

ABSTRACT:
A process to determine the response pressure of a brake in a braking system of a vehicle comprises: measuring the existing vehicle deceleration of the vehicle to determine a value of ground-vehicle deceleration, supplying a test pressure to the brake, measuring the deceleration of the vehicle after the test pressure has been supplied to the brake to determine a value of vehicle test deceleration, and comparing the value of ground-vehicle deceleration and the value of vehicle test deceleration. If the value of vehicle test deceleration is greater than the value of ground-vehicle deceleration by more than a predetermined tolerance value, the steps of the process are repeated with a reduced test pressure until the difference between the values of ground-vehicle deceleration and vehicle test deceleration is no more than the predetermined tolerance value. However, if the value of vehicle test deceleration is equal to or less than the value of ground-vehicle deceleration, the steps of the process are repeated with a higher test pressure until the value of vehicle test deceleration exceeds the value of ground-vehicle deceleration by a value which is less than or equal to the predetermined tolerance value. In this way the response pressure, i.e., the lowest pressure which needs to be supplied to the brake in order to exert a braking force, can be determined.

REFERENCES:
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patent: 5357800 (1994-10-01), Reuter et al.
patent: 5492008 (1996-02-01), Schnerer et al.

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