System for achieving a maximum braking effect

An apparatus for determining the maximum tractive and braking effort at a vehicle provided with rubber-tired elements controllable to provide tractive and braking effort in contact with a road surface, the improvement comprising:

• torque and rotation indicators (4, 5) for measuring the effective torque and wheel rpm between wheel and road previous to any braking operation and during the normal travel of said vehicle and in consequence of the changing properties of said road surface;
• a speed indicator (1) for measuring the actual vehicle speed with respect to ground;
• a comparison logic with memory (2) and display (3) for determining the maximum braking effort in response to signals from said torque and rotation indicators and said speed indicator and indicating the maximum braking effect to be expected at full braking of said vehicle;
• and
• a control system (6) with braking control valves (7, 8, 9, 10) for acting on the vehicle brakes, when the measured values indicate an imminent collision.

A method for determining the maximum tractive and braking effect in a vehicle provided with rubber-tired elements controllable to provide braking effort in contact with a road surface, the method comprising the steps of:

• measuring previous to applied braking operation and during the normal travel of said vehicle and in consequence of said road surface any change in speed of said vehicle and braking effort applied to said controllable elements within a predetermined time interval;
• measuring simultaneously within said time interval and generating magnitude signals and sign signals of any slippage of at least one of said controllable elements;
• comparing said signals received from said measurements to generate signals having characteristic values;
• and
• applying said signals having characteristic values to indicating means and to controlling means for displaying said maximum braking effect to be expected at full braking of said vehicle and for affecting the braking operation of said controllable elements respectively.

An apparatus for determining the maximum braking effect at a vehicle provided with rubber-tired elements controllable to provide braking effort in contact with a road surface, the improvement comprising:

• torque and rotation indicators (4, 5) for measuring the effective torque and wheel rpm between wheel and road previous to any braking operation and during the normal travel of said vehicle and in consequence of the changing properties of said road surface;
• a speed indicator (1) for measuring the actual vehicle speed with respect to ground;
• a comparison logic with memory (2) and display (3) for determining the maximum braking effort in response to signals from said torque and rotation indicators and said speed indicator and indicating the maximum braking effect to be expected at full braking of said vehicle;
• and
• a control system (6) with braking control valves (7, 8, 9, 10) for acting on the vehicle brakes, when the measured values indicate an imminent collision.