G - Physics – 01 – M
Patent
G - Physics
01
M
73/77
G01M 17/04 (2006.01)
Patent
CA 1294795
ABSTRACT In a method of checking the state of the chassis of a motor vehicle, wherein the motor vehicle is brought onto a position holding means spaced over a support and then the position holding means is removed so that the motor vehicle falls with its front or rear axle in free fall on the support, the spacing between the position holding means and the support, which corresponds to the height of fall of the motor vehicle, is selected so that it corres- ponds essentially to the residual spring deflection (distance between wheel axle and buffer stop) predetermined by the design of the motor vehicle but does not exceed this. The position holding means is removed at least as quickly as the particular wheel or wheels of the motor vehicle to be tested would fall under the action of the force of gravity and the simultaneous action of the relaxing spring present between wheel and body, ignoring the oppositely directed action of the shock absorber and the frictional forces (for example in the axle joint bearing and in the springs) and the variation time of the wheel pressure acting on the support is measured. In apparatus for carrying out the method, the support is in the form of a measuring bridge whereby the vehicle weight and the variation in time of the wheel pressure on the ground can be determined and the distance of the vehicle holding means from the support corresponds at most to the distance pre- determined by the residual spring deflection of the motor vehicle.
525679
Fetherstonhaugh & Co.
Richard Langlechner Gmbh
LandOfFree
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