CONTROL DEVICE FOR THE AUTOMATIC ACTUATION OF VEHICLE CLUTCHES

摘要

Control device for the clutch of vehicles designed to be actuated by a pressure medium, whereby the forked lever actuating the clutch is provided with a unit which operates with a pressure medium and which is controlled by electrically actuated valves. Said valves are actuated by an electronic control unit which processes the signals from: the switch provided on the forked lever, the switch unit detecting the position of the accelerator pedal, the switch sensing the no-load mode of the gearbox, the switch signaling the mechanical position of the clutch or the switch connected with the space containing the pressure medium, the signal transmitter whose signal shows the r.p.m. of the engine, and the signal transmitter whose signal shows the speed of the vehicle. The invention is characterised in that the pneumatic outputs of the electrically actuated valves (8, 9, 10) are connected with different throttles (11, 12, 13), and in that the electrical control inputs are connected with the outputs of the storage current circuits (24, 25) via power amplifiers (21, 22); the inputs of the storage current circuits are connected to a logic network (36) which is, accordingly, a storage system with a fixed program. The inputs of the logic network (36) are connected via the frequency-voltage converters (31, 34) and via the comparators with adjustable switching level to the signal transmitter (18) whose output signal shows the r.p.m. of the vehicle engine, and via the signal transmitter (33) which shows the speed of the vehicle by means of the electrical output signal, as well as via the receptor circuit (27, 28, 29, 43), on the one hand to the switch (14) provided on the forked lever, on the other hand to the switch (16, 17) detecting the position of the accelerator pedal, to the switch (42) showing the no-load mode of the gearbox, to the push switch (6) and to the switch (40) detecting the position of the forked lever (2) with the electrical output.