Anti-slip control
AssigneeLucas Industries public limited company
InventorsThomas Bach, Stefan Helbing, Josef Knechtges, Hubert Schmitt
Life of this patent
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Abstract
A method for preventing the driven wheels of an automotive vehicle from spinning provides that whenever one of two driven wheels of one axle of the vehicle has a lower friction coefficient with the road surface than the other wheel of said axle and the one wheel shows a spinning tendency, brake pressure is built up at said wheel, with the rotational speed of the other wheel being measured, and whenever the rotational speed exceeds a specified value with respect to a vehicle reference speed, the brake pressure at the one wheel is reduced or maintained constant.
Claims2
A method for preventing the driven wheels of an automotive vehicle from spinning, where whenever a first wheel of two driven wheels of an axle of the vehicle provided with an axle differential has a lower friction coefficient with the road surface than a second wheel of that axle, and the first wheel shows a spinning tendency, but not the second wheel, a brake pressure is built up at the first wheel, and then the rotational behavior of the second wheel which does not show a spinning tendency is measured and evaluated so that whenever the rotational speed of the second wheel exceeds a threshold value (v.sup.+ ref), the brake pressure at the first wheel is temporarily relieved, and whenever the rotational speed of the second wheel drops below the threshold value (v.sup.+ ref), the brake pressure at the first wheel is temporarily built up.
Dependencies are inferred from the claim text.