Abstract: Electromagnetic fuel injector for gaseous fuels comprising: an injection nozzle controlled by an injection valve; a movable shutter to regulate the flow of fuel through the injection valve; an electromagnetic actuator, which is suitable to move the shutter between a closed position and an open position of the injection valve and comprises a fixed magnetic pole, a coil suitable to induce a magnetic flux in the magnetic pole, and a movable anchor suitable to be magnetically attracted by the magnetic pole; an absorption element, which is made of an amagnetic elastic material and is arranged between the magnetic pole and the anchor; and a protective element, which is made of a magnetic metal material having high surface hardness and is interposed between the absorption element and the anchor.

Abstract: Electromagnetic fuel injector for gaseous fuels comprising: an injection nozzle controlled by an injection valve; a movable shutter to regulate the flow of fuel through the injection valve; an electromagnetic actuator, which is suitable to move the shutter between a closed position and an open position of the injection valve and comprises a fixed magnetic pole, a coil suitable to induce a magnetic flux in the magnetic pole, and a movable anchor suitable to be magnetically attracted by the magnetic pole; an absorption element, which is made of an amagnetic elastic material and is arranged between the magnetic pole and the anchor; and a protective element, which is made of a magnetic metal material having high surface hardness and is interposed between the absorption element and the anchor.

Abstract: Electromagnetic fuel injector for gaseous fuels comprising: an injection nozzle controlled by an injection valve; a movable shutter to regulate the flow of fuel through the injection valve; an electromagnetic actuator, which is suitable to move the shutter between a closed position and an open position of the injection valve and comprises a fixed magnetic pole, a coil suitable to induce a magnetic flux in the magnetic pole, and a movable anchor suitable to be magnetically attracted by the magnetic pole; an absorption element, which is made of an amagnetic elastic material and is arranged between the magnetic pole and the anchor; and a protective element, which is made of a magnetic metal material having high surface hardness and is interposed between the absorption element and the anchor.

Abstract: Electromagnetic fuel injector for gaseous fuels comprising: an injection nozzle controlled by an injection valve; a movable shutter to regulate the flow of fuel through the injection valve; an electromagnetic actuator, which is suitable to move the shutter between a closed position and an open position of the injection valve and comprises a fixed magnetic pole, a coil suitable to induce a magnetic flux in the magnetic pole, and a movable anchor suitable to be magnetically attracted by the magnetic pole; an absorption element, which is made of an amagnetic elastic material and is arranged between the magnetic pole and the anchor; and a protective element, which is made of a magnetic metal material having high surface hardness and is interposed between the absorption element and the anchor.

Abstract: An electromagnetic fuel injector for an internal combustion engine, comprising a main body having a central cylindrical cavity adapted to act as a duct for the fuel, a valve which is disposed to close an end of the central cylindrical cavity and is provided with a moving shutter, an electromagnetic actuator which is provided with a coil, a fixed armature, and a moving armature mechanically connected to the shutter and adapted to be magnetically attracted by the fixed armature against the action of a spring, and a monolithic tubular member which is disposed coaxially within the central cylindrical cavity and houses the fixed armature and the moving armature.

Abstract: An electromagnetic fuel injector for an internal combustion engine, comprising a main body having a central cylindrical cavity adapted to act as a duct for the fuel, a valve which is disposed to close an end of the central cylindrical cavity and is provided with a moving shutter, an electromagnetic actuator which is provided with a coil, a fixed armature, and a moving armature mechanically connected to the shutter and adapted to be magnetically attracted by the fixed armature against the action of a spring, and a monolithic tubular member which is disposed coaxially within the central cylindrical cavity and houses the fixed armature and the moving armature.

Abstract: An electrically controlled three-way valve comprising a valve body, within which a central cavity and a respective first, second and third connection duct, adapted to bring the central cavity into communication with atmosphere, are provided, and a shutter member mounted to move within the central cavity between a first operating position, in which the shutter member is disposed to close the inlet of the first duct so as to obstruct this first duct in a leak-tight manner and to bring the second duct into sole communication with the third duct, and a second operating position in which the shutter member is disposed to close the inlet of the third duct in order to obstruct this third duct in a leak-tight manner and to bring the second duct into sole communication with the first duct; the shutter member being of spherical shape and independent from any other member of the valve so that it can move freely within the central cavity; the central cavity being shaped such that the shutter member is forced simultaneous

Abstract: A valve comprising a plunger controlled by an electromagnet and in turn controlling fuel flow through an injection orifice; the plunger being defined by a cylindrical lateral surface mating in sliding manner with a corresponding cylindrical guide surface of a seat formed in the valve body. According to the present invention, the barycenter of the plunger lies in a plane of the valve perpendicular to the valve axis, and the distance between which plane and the mid plane of the cylindrical guide surface is less than 2 mm.