Method and apparatus for testing shock absorbers and...

G - Physics – 01 – M

Patent

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G01M 17/04 (2006.01) G01L 5/28 (2006.01)

Patent

CA 2138767

A dynamic testing system is described for testing automotive shock absorbers and suspension systems. The testing system includes placing a vehicle (20) on a rolling road surface provided by at least one roller or pair of parallel rollers (1) supporting the front or rear wheels of the vehicle, or several such rollers or pairs of rollers supporting both the front and rear wheels (3) of the vehicle, the roller or at least one roller in the or each pair either having an irregular or eccentric surface or else being eccentrically mounted so as to impart a vertical vibratory motion to the suspension system of the vehicle when driven on that surface, positively driving the vehicle at a predetermined speed on that rolling surface, either using the vehicle's own motive power, or, preferably, by positively driving one or more of those rollers forming that rolling road, applying a controlled braking pressure to the vehicle's braking system to provide a predetermined retardation force acting on the vehicle, and whilst that retardation force is applied measuring and comparing the rotational speed of the roller(s) with the rotational speed of the vehicle wheels.

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