Piaggio&c. S.p.a.

Universita′ Di Pisa

Maurizio Marcacci

Luca Carmignani

Paolo Capozzella

Alessandro Caleo

Emilio Vitale

Francesco Frendo

Luigi Arnone

Giovanni Riggio

Leonardo Zappala'

The present invention relates to a management method of the functioning mode of a hybrid drive assembly for vehicles, in particular scooters, and a hybrid drive assembly, comprising at least one internal combustion engine and an electric machine, using the method. The method according to the invention comprises the phases of determining a desired torque and a vehicle state on the basis of a set of received input parameters and/or commands and is characterized in that it comprises the phases of operating the internal combustion engine so that it does not provide torque and operating the electric machine so that it functions as generator for charging an accumulator.

Control method of a hybrid drive assembly for vehicles and a hybrid drive assembly using said method

Four-wheeled vehicle () of the type equipped with two steered front wheels (), a frame (), handlebars (), two rear wheels () and a front suspension group () that acts upon the two front wheels (). The front suspension group () allows the rolling of the vehicle ().

Four-wheeled vehicle

A hybrid drive assembly () for a vehicle having at least one drive wheel (), the drive assembly including an internal combustion engine (); a transmission unit () interposed between a drive shaft () of the internal combustion engine () and a propeller shaft () connected angularly to the drive wheel (), and in turn including a continuously variable transmission () having a drive pulley () connected angularly to the drive shaft () and a driven pulley (), and a centrifugal clutch () having a hub () connected to the driven pulley, and a driven bell () connected to the propeller shaft (); and an electric machine () having a rotor () integral with the bell () of the centrifugal clutch (). The drive assembly () is controlled by a control unit (), in response to a number of input signals (Ss, Sa, Sf), in a number of operating modes including an all-combustion propulsion mode, an all-electric propulsion mode, a first hybrid propulsion mode wherein the internal combustion engine () and the electric machine () are connected in series, and a second hybrid propulsion mode wherein the internal combustion engine () and the electric machine () are connected in parallel.

Hybrid drive assembly for a vehicle, in particular a scooter

Selective actuation device () including an actuator () operating on an actuation mechanism (). The mechanism () is equipped with at least one shaft () connected to a pusher element () to actuate a first operating group () and with a rotating element () that moves between an activation mode, in which said element () acts on a second operating group (), and a rest mode where the activation of the first operating group () is disengaged by the second operating group ().

Selective actuation device

Anti-rolling device () for vehicles of the type equipped with a front steer system with articulated quadrilateral structure () and with two independent front suspensions (). The device has at least one stop element (), integral with an element of the quadrilateral structure in its rolling movements, at least one locking element (), to lock the position of the stop element (), preventing the rolling movements of the quadrilateral structure (), and a parking group (), guided by command means (), to command the opening or closing of the locking element ().

Anti-rolling device for vehicles

Stroke stop device () for the suspensions of a vehicle of the type provided with at least one shock absorber () equipped with a first () and second () portion that can slide relatively. The device also comprises a pin element () integral with the first portion () of the shock absorber () and able to slide with respect to a caliper element () integral with the second portion () of the shock absorber (). The caliper element () can be actuated closed to lock the sliding of the pin element () and to stop the stroke of the shock absorber ().

Stroke stop device of the suspensions of a vehicle

Selective actuation device () comprising and actuator () acting upon an actuation lever () that has at least one thrusters element () for the actuation of a first operating group () and a cam element () mobile between an activation position in which it acts upon a second operating group () and a rest position in which the activation of the first operating group () is disassociated from the second operating group ().

Growing community of inventors

Leghorn, Italy

Maurizio Marcacci