초록 ▼

An overload warning system for a trailer brake cylinder of a trailer brake system having a nominal deceleration rate. It has been found that previous temperature sensing overdue warning systems have a disadvantage that undue delay occurs and that no warning signal is initiated until after damage to

An overload warning system for a trailer brake cylinder of a trailer brake system having a nominal deceleration rate. It has been found that previous temperature sensing overdue warning systems have a disadvantage that undue delay occurs and that no warning signal is initiated until after damage to the trailer brakes occurs. The present invention proposes that the tractor brake system and the trailer brake system compare their received operating control signals from which they form a ratio factor and then produce a warning signal when the ratio factor changes beyond a predetermined critical change velocity. The present invention employs the rapid drop in braking force caused by a brake overload and uses the rapid drop and increase brake demand for readjusting the brake deceleration. The present invention is used for uniquely recognizing the “Fading”effect of the trailer brake system.

대표청구항 ▼

An overload warning system for at least one drive vehicle brake activated by an energy supplied and located in a driven vehicle brake system, said driven vehicle brake system forming a control circuit for controlling the driven vehicle deceleration rate, wherein a nominal value of said driven vehicl

An overload warning system for at least one drive vehicle brake activated by an energy supplied and located in a driven vehicle brake system, said driven vehicle brake system forming a control circuit for controlling the driven vehicle deceleration rate, wherein a nominal value of said driven vehicle deceleration rate is being produced by an energy supplied to at least one driving vehicle brake in a driving vehicle, said overload warning system comprising: (a) a first sensor for sensing the energy level in said driving vehicle brake for producing a corresponding driving vehicle energy signal, (b) a second sensor for sensing the energy level in said driven vehicle brake for producing a corresponding driven vehicle energy signal, (c) a comparator receiving said corresponding driving vehicle and driven vehicle energy signals, and (d) said comparator being adapted to form a ratio between said corresponding driving vehicle and driven vehicle energy signals and being adapted to produce a warning signal when said ratio of the energy signals changes with at least predetermined critical change velocity.