Retrofit injector mount

An injector mount clamp for coupling an injector of an exhaust gas treatment system to an exhaust conduit of an engine while the conduit is in an installed position, the exhaust conduit having an opening, the injector mount clamp comprising:

• a clamp body having a first end and a second end, the clamp body having a generally circumferential profile configured to conform to the exhaust conduit, the clamp body having a thickness that defines an aperture;
• an insulating material configured to be located intermediate the clamp body and the exhaust conduit when the clamp is at an installed position, the insulating material uninterruptedly circumferentially extending from the first end of the clamp body to the second end of the clamp body to space apart the clamp body from the exhaust conduit;
• and
• an injector mounting boss disposed on the clamp body, the injector mounting boss having a cylindrical body portion and a flange, the cylindrical body portion defining a passage that fluidly communicates with the aperture of the clamp body, the flange having an outer mounting face configured to oppose a complementary flange on the injector such that a terminal end of the injector is in fluid communication with the exhaust conduit, without extending beyond an inner circumference of the exhaust conduit when in an installed position.

A method for retrofitting an injector of an exhaust gas treatment system to an exhaust conduit of an engine, the method comprising:

• forming an opening in the exhaust conduit;
• advancing a clamp body of an injector mount clamp around the exhaust conduit in a direction transverse to the flow of exhaust through the conduit, the clamp body having a first end and a second end as well as an injector mounting boss disposed thereon, the mounting boss defining a passage in fluid communication with the opening in the exhaust conduit;
• advancing a fastener through apertures formed in complementary ears extending from the first and second ends of the clamp body;
• placing insulating material intermediate the clamp body and the exhaust conduit to space apart the clamp body from the exhaust conduit and reduce heat transfer therebetween;
• tightening the fastener relative to the clamp body to move the first and second ends of the clamp body closer to each other and inhibit slidable movement of the clamp body along the exhaust conduit;
• and
• advancing an insertion end of the injector into the injector mounting boss until the injector engages the exhaust conduit.