Investigation of the Influence of Steering-Adjustment Parameters on Steering and Driving Stability of a Commercial Vehicle of the 10 T Total Weight Class 785056
The paper develops theoretical formulations of
steering-adjustment parameters (camber, castor, toe-in, toe-out,
steering axis inclination) for a 10 t commercial truck such that
steering performance and driving stability are improved. Optimized
adjustments are then evaluated in driving trials. The results
compared favorably with theoretical predictions. The following
conclusions were drawn:
1. The expected conformity between theoretical and experimental
results was confirmed.
2. The importance of the different steering adjustments depends
upon the driving conditions.
3. Adjustment of steering parameters for front-wheel driven
axles produces changes in stabilizing forces. However, improvement
in either steering or stability results in impairment of the other
characteristic; hence, an optimization must be attempted.
4. The testing methods used in driving trials could be
effectively used on unmodified vehicles above 6 t total weight.
5. Optimal steering adjustments were made on a truck which
produced significant improvements in steering and performance.
6. Results indicate that radial tire wear can be reduced by
setting camber at 0°.
17th FISITA Congress (1978), Budapest, Hungary