Abstract: An intake device is provide for drawing in fresh gas and feeding the same to an internal combustion engine with internal combustion, wherein the intake device is suited for the formation of a fresh gas vortex in a combustion chamber of the internal combustion engine. The intake device includes a first manifold section, from which all first parts of fresh gas line groups branch off to a fresh gas outlet end, and a second manifold section, from which all second parts of the fresh gas line groups branch off to the fresh gas outlet end, which are fluidically separated from each other from the separation point to the fresh gas outlet end. A vortex throttle assembly is provided in a first manifold section and the amount throttle device is provided in the second manifold section.

Abstract: An intake device is provide for drawing in fresh gas and feeding the same to an internal combustion engine with internal combustion, wherein the intake device is suited for the formation of a fresh gas vortex in a combustion chamber of the internal combustion engine. The intake device includes a first manifold section, from which all first parts of fresh gas line groups branch off to a fresh gas outlet end, and a second manifold section, from which all second parts of the fresh gas line groups branch off to the fresh gas outlet end, which are fluidically separated from each other from the separation point to the fresh gas outlet end. A vortex throttle assembly is provided in a first manifold section and the amount throttle device is provided in the second manifold section.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A servo-assisted butterfly valve comprising a valve body, a valve seat formed in the valve body, a butterfly disc adapted to engage the valve seat, a shaft on which the butterfly disc is keyed, an electric motor coupled to the shaft by means of at least one toothed wheel provided with a projection, a spiral return spring adapted to rotate the butterfly disc towards the closed position, and an opposing spring adapted to rotate the butterfly disc towards a limp-home position defined by an abutment body against the action of the return spring; the opposing spring is a flat leaf spring and is mounted on a moving member which is mounted coaxially and idly on the shaft and comprises a projection adapted to engage in abutment against the abutment body, a first end of the opposing spring being free and adapted to come into contact with the projection of the toothed wheel during the rotation of this toothed wheel.

Abstract: An electronically controlled butterfly valve comprising a valve body, a valve seat formed in the valve body, a butterfly disc adapted to engage the valve seat, a shaft on which the butterfly disc is keyed, an electric motor coupled to the shaft by means of a gear transmission having a final gear keyed on the shaft, a spiral return spring adapted to rotate the butterfly disc towards the closed position, and an opposing spring adapted to rotate the butterfly disc towards a limp-home position defined by an abutment body against the action of the return spring; the opposing spring is a flat leaf spring and is mounted on a moving member which is mounted coaxially and idly on the shaft and has a projection adapted to engage in abutment against the abutment body, an end of the opposing spring being free and ending in a projection which is disposed so as to be superimposed on the trajectory followed by a member rigid with the final gear.

Abstract: A servo-assisted butterfly valve comprising a valve body, a valve seat formed in the valve body, a butterfly disc adapted to engage the valve seat, a shaft on which the butterfly disc is keyed, an electric motor coupled to the shaft by means of at least one toothed wheel provided with a projection, a spiral return spring adapted to rotate the butterfly disc towards the closed position, and an opposing spring adapted to rotate the butterfly disc towards a limp-home position defined by an abutment body against the action of the return spring; the opposing spring is a flat leaf spring and is mounted on a moving member which is mounted coaxially and idly on the shaft and comprises a projection adapted to engage in abutment against the abutment body, a first end of the opposing spring being free and adapted to come into contact with the projection of the toothed wheel during the rotation of this toothed wheel.

Abstract: 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.

Abstract: An electronically controlled butterfly valve comprising a valve body, a valve seat formed in the valve body, a butterfly disc adapted to engage the valve seat, a shaft on which the butterfly disc is keyed, an electric motor coupled to the shaft by means of a gear transmission having a final gear keyed on the shaft, a spiral return spring adapted to rotate the butterfly disc towards the closed position, and an opposing spring adapted to rotate the butterfly disc towards a limp-home position defined by an abutment body against the action of the return spring; the opposing spring is a flat leaf spring and is mounted on a moving member which is mounted coaxially and idly on the shaft and has a projection adapted to engage in abutment against the abutment body, an end of the opposing spring being free and ending in a projection which is disposed so as to be superimposed on the trajectory followed by a member rigid with the final gear.

Abstract: A production method for a butterfly valve which comprises a valve seat engaged by a butterfly body keyed on a shaft in order to rotate under the action of an electric actuator coupled to this shaft by means of a geared transmission which ends in a final gear keyed on this shaft, the shaft being coupled to a position sensor provided with a rotor rigid with the shaft and a stator disposed to face the rotor, this method comprising the stages of disposing the shaft and the rotor of the position sensor in a mould, injecting plastic material into this mould in order to fill the mould and producing, by moulding, the butterfly body keyed on the shaft and the final gear keyed on the shaft and incorporating the rotor of the position sensor.

Abstract: A production method for a butterfly valve which comprises a valve seat engaged by a butterfly body keyed on a shaft in order to rotate under the action of an electric actuator coupled to this shaft by means of a geared transmission which ends in a final gear keyed on this shaft, the shaft being coupled to a position sensor provided with a rotor rigid with the shaft and a stator disposed to face the rotor, this method comprising the stages of disposing the shaft and the rotor of the position sensor in a mould, injecting plastic material into this mould in order to fill the mould and producing, by moulding, the butterfly body keyed on the shaft and the final gear keyed on the shaft and incorporating the rotor of the position sensor.