Connecting device for the fluid-tight connection between two pipes in an internal combustion engine

A connecting device (12) for the fluid-tight connection of a first and a second duct (2, 11);

• the connecting device (12) comprises:
• a connector (14), which is suited to establish a fluid-tight joint between said two ducts (2, 11) and is provided with a fixed electrical connection terminal (15);
• a mobile electrical connector (18), which is mechanically independent of the first and the second duct (2, 11) and, furthermore, is mechanically separated from and independent of the connector (14) and is suited to establish an electrical connection with the fixed electrical connection terminal (15);
• a control unit (13), which is suited to check the presence of a connection between the fixed electrical connection terminal (15) and the mobile electrical connector (18);
• and
• an intermediate connecting body (17), which is interposed between the connector (14) and the mobile electrical connector (18), is suited to establish an electrical connection with both the fixed electrical connection terminal (15) and the mobile electrical connector (18), and is adapted to allow the fixed electrical connection terminal (15) and the mobile electrical connector (18) to be coupled to each other, only when there is a fluid-tight joint between the two ducts (2, 11);
• the connecting device (12) further comprising coupling means (25, 27;
• 28, 29) for coupling the intermediate connecting body (17) to the fixed electrical connection terminal (15) and to the mobile electrical connector (18) respectively;
• the coupling means (25, 27;
• 28, 29) being manufactured so as to mechanically prevent the fixed electrical connection terminal (15) and the mobile electrical connector (18) from being connected, when there is no fluid-tight joint between the two ducts (2, 11).