Combined hydrodynamic and friction brake system for heavy lorry - has electronic adjuster to relate hydrodynamic input to observed deceleration of drive shaft

摘要

The braking system combines the effects of separate friction and hydraulic brakes to control the rear drive wheels sensors monitoring drive shaft deceleration to govern hydraulic brake input and prevent wheel lock. The hydraulic brake effects are adjusted by modifying the capacity i.e. quantity of brake fluid with an electronic adjuster comparing the read and desired values of the hydraulic brake rotor velocity. An electronic rev counter on the drive shaft transmits the real valve to a difference detector which in turn feeds an error signal to the adjuster. The desired value may be set and modified by means of a sliding resistance operated by a lever.