Mounting device for an injector in an exhaust system of an internal combustion engine

A mounting device connecting an injector onto an exhaust system of an internal combustion engine comprising a thermally conductive tubular support body in which the injector is retained, the mounting device herein being adapted to be coupled to a connection tube extending outwardly from a lower end of an exhaust conduit of the exhaust system;

• an upper portion of the support body being thermally coupled to an upper portion of a nose of the injector so that a high heat exchange by conduction occurs between the upper portion of the nose and the upper portion of the support body;
• a lower portion of the support body being thermally insulated from a lower portion of the nose so that a reduced heat exchange occurs by conduction between the lower portion of the nose and the lower portion of the support body;
• a lower end of the support body being thermally insulated from the connection tube so that a reduced thermal exchange occurs between the lower end of the support body and the connection tube;
• a first thermally insulating ring made of thermally insulating material interposed between the lower end of the support body and the connection tube;
• and a tubular insulating element, which is made of a thermally insulating material, arranged within the lower portion of the support body of the to maintain the lower portion of the nose thermally insulated from the support body with the first insulating ring being integral with the tubular insulating element;
• and
• wherein the tubular insulating element is comprised of a thermally insulating material and comprises a tubular central body having a smaller external diameter with respect to the internal diameter of the support body and an end flange at each opposing end of the central body, the end flanges being transversally arranged with respect to the central body and having an external diameter substantially equivalent to the internal diameter of the support body, with the first insulating ring comprising an extension of the end flange at a lower end the tubular insulating element.