Abstract: The apparatus substantially comprises a manually operated lever for a gearbox that oscillates on one plane and can be set in a first position and in a second angular position in each of which the driving devices of the apparatus are activated, respectively, in a first and in a second configuration in which they control the manoeuvres for selecting and engaging, respectively, a higher or lower gear, and that may also be set into a third and a fourth angular position corresponding to a greater angle than that reached in the previous positions and in each of which said driving devices are activated respectively in a third and in a fourth configuration in which they control the manoeuvres for selecting and engaging a higher or lower gear, the manoeuvers being performed with a greater activating force than that with which the same manoeuvres are performed with the lever in the first or second position; the apparatus also comprises a resistance device adapted to generate a resistant torque of a preset value for mov

Abstract: A system for automatically controlling a motor vehicle drive unit, which system comprises a hydraulic actuating unit for actuating a control member controlling selection and engagement of the gears on the vehicle transmission; a hydraulic actuator for actuating a control member controlling the clutch; and an electronic control system for processing input signals relative to operating parameters of the drive unit and vehicle in general, and for controlling the actuators to varying degrees of automation. In particular, the control system produces variable control signals for respective porportional solenoid valves controlling the actuators, so as to vary hydraulic supply to the actuators and consequently the actuating force of the same, for simulating operation by a skilled driver; the aforementioned control system also providing, when shifting gear, for controlling the speed of the engine so as to minimize slippage of the clutch.

Abstract: An actuation device for activating a friction clutch of a motor vehicle including a cylinder for activating the clutch and control unit for supplying a pressurized fluid to the cylinder at a rate that is proportion to the force exerted on the clutch pedal.