Magneti Marelli Powertrain, S.p.a.

Sandro Sirani

Nazario Bellato

Renzo Moschini

Marcello Colli

Federico Lancioni

Eugenio Dragoni

Riccardo Nazzaro

A choke device for an intake system of an internal combustion engine; the choke device has at least one choke body fitted movably inside an intake conduit, and an actuating device for moving the choke body to and from a work position in which the choke body reduces the cross section of the intake conduit; and the actuating device has a filiform actuating member made of a shape-memory material that changes shape when subjected to physical external stress, and having a first portion embedded in the choke body, and a second portion located outside the choke body and secured mechanically to a fixed part.

Choke device for an internal combustion engine intake system

A choke valve for an intake manifold with a retracting tumble system for an engine provided with a number of cylinders, the choke valve being adapted to vary the passage section of the air through an intake duct which connects each cylinder with the intake manifold and is regulated by at least one intake valve; the choke valve comprises a butterfly mounted to rotate about an axis of rotation disposed transversely and externally with respect to the corresponding intake duct under the thrust of a corresponding rotary electric motor which comprises a stator and a rotor housed directly in the butterfly.

Choke valve provided with an integrated electromagnetic actuator for an intake manifold with a retracting tumble system

Growing community of inventors

San Benedetto Val Di Sambro, Italy

Sandro Sirani