Iveco Fiat S.p.a.

Augusto Caramagno

Gian M Pigozzi

An automated gear change for an automobile vehicle, in particular for an industrial vehicle, provided with an input shaft, an output shaft, a geared transmission interposed between these input and output shafts and including an auxiliary shaft and a plurality of gears mounted in an angularly idle manner with respect to this output shaft and a plurality of engagement members for each gear that can be selectively actuated in order to make this gear angularly rigid with the output shaft; each engagement member is mounted to slide in a respective pair of seats that face one another and communicate and are associated with the relative gear and, respectively, with the output shaft, and can move between a first disengaged operating position in which it exclusively engages one of the seats and a second engaged operating position in which it engages both the seats; the gear change is further provided with actuation means of electromagnetic type in order to control the displacement of each engagement member between these first and second operating positions.

Automated gear change for an automobile vehicle, in particular for an industrial vehicle

A gear change for a commercial vehicle comprising a main group defining a plurality of transmission ratios and an auxiliary group with two transmission ratios actuated by an actuator with three positions corresponding respectively to two coupling positions and one neutral position; the actuator is controlled by a control unit in response to actuating signals received by manual selectors, and it is adapted to place the auxiliary group in the neutral position if the speed of rotation of the input shaft exceeds a predetermined threshold value.

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Turin, Italy

Augusto Caramagno