Technology for Measuring and Diagnosing the Damping Force of Shock Absorbers and the Constant of Coil Springs Mounted on a Vehicle and an Automobile Bicycle

Diagnosis of the individual function of shock absorbers and coil springs has been simplified by an off-the-car-type tester. At the first step, I studied methods of analyzing coil springs and shock absorbers independently without removing them from the vehicle. The damping force of the shock absorber itself, excluding the spring effect, can be indicated according to the axle weight/road wheel at the point of displacement 0. At the second step, I studied technology for measuring and diagnosing the damping force of shock absorbers and the constant of coil springs for automobile bicycle which is hard to vibrate sprung mass, when shock absorbers and coil springs are mounted on an automobile bicycle. Resultantly, it cleared that only damping force can be detected on measuring by eliminating effects the spring force and the unsprung mass, when the displacement of wheels are 0.