A PART OF MARELLI
The robotized gearbox is a type of gearbox for automotive use whose name comes from the “robotization”, in other words the substitution of manual drives with automatic drives, of a regular manual gearbox. The electronic control unit independently carries out the clutch and gear engagement movements, by means of specific actuators. This control unit carries out the clutch disengagement process, the change in gear ratio and the subsequent clutch re-engagement.
During this operation, a communication is sent to the engine control unit, through the CANbus network, to ignore the drive torque request coming from the accelerator pedal so that the revolutions decrease while upshifting or to accelerate the engine while downshifting, with an appreciable “double-clutching” effect.
The Magneti Marelli robotized gearboxes feature hydraulic actuation of the movements, which is characterized by faster actuation sped and consequently improved sports performances and greater vehicle comfort.
Strong of a longstanding experience in this sector, which began with the first robotized gearbox created for the Formula 1, Magneti Marelli supplies its robotized gearboxes to all manufacturers of super sports cars (Ferrari, Maserati, Aston Martin, Lamborghini and Audi), compact cars and commercial vehicles.
Through a process of constant technological evolution, today it has reached the “mechatronics” generation, which for the first time integrates in a single kit the electronic control part with the hydraulic transmission part, allowing a significant improvement in performances, both in terms of gearshift speed and comfort
Magneti Marelli’s robotized gearboxes also offer a dual operating mode: manual or automatic. In the completely automatic mode, the control unit is responsible for deciding on the gear change. In the manual mode, the driver chooses the gear to be engaged using a lever similar to the traditional one or by means of steering wheel controls or paddles.
This type of transmission offers the following advantages: