Magneti Marelli Powertrain, S.p.a.

Magneti Marelli S.p.a.

Magneti Merelli Powertrin S.p.a.

Roberto Piciotti

Stefano Musolesi

Nazario Bellato

Massimo Zanotti

Loris Lambertini

Marcello Colli

Maurizio Fiorentini

Claudio Fauni

Paolo Cominetti

Giuseppe Gamberini

Claudio Grossi

Giorgio Ferretti

Domenico Cannone

Fabrizio Chini

Andrea Baldassari

Mario Marconi

Riccardo Nazzaro

Maurizio Xella

Roberto Saporiti

Federico Pezzotta

Giorgio Signorelli

A handle control provided with: a supporting body, which is provided with a central through hole and is adapted to be fitted about a handlebar to be rigidly fixed to the handlebar; a twist grip, which has a tubular shape, is rotationally carried by the supporting body and is centrally perforated to be fitted about the handlebar so as to rotate with respect to the handlebar; and an angular position sensor, which is adapted to read the angular position of the twist grip; the angular position sensor has at least one rotor, which is supported by the twist grip to rotate along with the twist grip and is adapted to influence an electric field; and at least one reader, which is carried in a stationary position by the supporting body, is arranged close to the rotor, and is suitable for a contactless and remote reading of the orientation of the rotor.

Handle control provided with an angular position sensor

An acquisition system for detecting the angular position of a gas knob of a motorcycle; the acquisition system is provided with: a fixed supporting body; a mobile element, which is mounted mobile in the supporting body; a transmission device, mechanically connected to the gas knob and to the mobile element for transmitting the motion from the gas knob to the mobile element itself; and a main position sensor, which is carried by the supporting body, is coupled to the mobile element for determining the angular position of the mobile element, and is designed to provide two mutually redundant measurements of the angular position of the mobile element.

Integrated control system for an internal-combustion engine of a motorcycle provided with a gas knob and acquisition system for detecting the angular position of a knob for the gas of a motorcycle

A system for acquiring the angular position of a gas twist grip in a motorcycle; the acquisition system is provided with a fixed supporting body; a rotating shaft turnable mounted in the supporting body; a transmission device mechanically connected to the gas twist grip and to the revolving shaft to transmit the motion of the gas twist grip to the revolving shaft itself; a main angular position sensor, which is carried by the supporting body, is coupled to the revolving shaft to determine the angular position of revolving shaft, and is adapted to provide two reciprocally redundant measures of the angular position of the revolving shaft; and an angular control position sensor, which is carried by the supporting body, is coupled to the revolving shaft to determine the angular position of the revolving shaft, and is adapted to provide two reciprocally redundant measures of the angular position of the revolving shaft.

Acquisition system for detecting the angular position of a gas twist grip in a motorcycle

A throttle valve for an internal combustion engine, the throttle valve having: a valve seat; a throttle disk, which engages the valve seat and is rotated by an electric motor between an open position and a closed position; a gear transmission connecting the electric motor to a shaft of the throttle disk; a position sensor for determining the position of the throttle disk; a housing chamber housing the electric motor, the gear transmission, and the position sensor; and a rigid plate, which is housed inside the housing chamber, and supports a stator of the position sensor, electric terminals of an electric connector, and a connecting printed circuit which connects the stator of the position sensor and the electric motor electrically to the electric terminals of the electric connector.

Internal combustion engine throttle valve

A method for the production of a butterfly valve which comprises a valve body housing a valve seat engaged by a butterfly disc keyed on a shaft in order to rotate under the action of an electric motor, the shaft being coupled to an inductive position sensor of the 'contact-free' type provided with a rotor which is rigid with the shaft and is housed in a chamber of the valve body, and a stator which is borne by a detachable cover adapted to close the chamber and is disposed, in operation, facing the rotor, the method comprising the coupling of the rotor to the shaft, the mounting of the stator on the cover, the completion of any remaining machining operations on the butterfly valve, the coupling of the cover to the valve body in order to close the chamber in a substantially permanent manner, and the calibration of the position sensor by disposing the shaft in a sequence of predetermined positions.

Method for the production of an electronically controlled butterfly valve with an inductive sensor of 'contact-free' type for an internal combustion engine

A butterfly valve for an internal combustion engine; a valve body houses a valve seat engaged by a butterfly body keyed on a shaft in order to rotate between an open position and a closed position under the action of an electric actuator coupled to the shaft by means of a cascade of gears; the electric actuator has a cylindrical body which is bounded at the location of tits base by a metal plate electrically connected to the valve body and provided with a pair of through holes through which two electrical conductors pass and supply electricity to the electric actuator; two respective bushings are interposed between the conductors and the holes of the plate, each of which is disposed electrically in contact both with the metal plate and with the respective electrical conductor and is made from partially conducting material having a specific resistance of between 10and 10Ohm&#xb7;cm.

Butterfly valve for an internal combustion engine with dissipation of electrostatic charges and a relative actuator

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Bologna, Italy

Roberto Piciotti