Vehicular friction clutch actuator dependent on speed difference - includes controller for linear redn. of desired value of difference between engine and prim. gear speeds

摘要

An adjustment circuit (21) produces an actual-valve signal (delta n) representative of the inequality between the speeds of the engine (nm) and gearbox input shaft (ng). The adjustment is effective only when this signal (delta n) is less than a preset max. pref. below 150 rev/min. A set-point generator (33) reduces the desired value (delta n) of the difference in accordance with a predetermined linear characteristic (37). The control signal (sk) to the clutch driver (7) can be modified by perturbation signals dependent on engine speed (nm) and accelerator pedal position (15). ADVANTAGE - Comfort of clutch operation is increased with low mechanical or thermal loading.