Throttle valve for an internal combustion engine provided with a conditioning circuit

A throttle valve for an internal combustion engine comprising:

• a valve body entirely made of a first metallic material;
• a tubular feeding duct, defined in the valve body and through which the air taken in by the internal combustion engine flows;
• a throttle plate arranged inside the feeding duct and splined to a shaft mounted in a rotary manner so as to rotate around a rotation axis between a maximum opening position and a closing position to open and close the feeding duct;
• an actuating device for controlling rotation of the throttle plate around the rotation axis, the actuating device including an electric motor and a gear drive for transmitting motion from the electric motor to the shaft of the throttle plate;
• an actuating device conditioning circuit defined in the valve body including a tube for the passage of conditioning fluid;
• and wherein the valve body includes a seat for housing the tube;
• wherein the tube is made of a second material able to conduct heat selected from a group including:
• steel, aluminum, or copper;
• and wherein a substantially uniform layer of a structural and heat-conducting resin is provided interposed between the seat and the tube and applied on the entire available surface of the seat so as to allow fixing of the tube in the seat.