Destructive joint testing of medium filled port fuel injection rails

A port fuel injection rail assembly brazed joint test procedure, comprising:

• filling an inner port fuel injection rail chamber of a port fuel injection rail assembly with a liquid medium, wherein the port fuel injection rail assembly has a metal main body tube defining the inner port fuel injection rail chamber and a number of metal components brazed onto the main body tube, each connection between defining a brazed joint;
• curing the medium;
• cross-cutting the main body tube in at least one location to section the port fuel injection rail assembly into a smaller segment containing at least one brazed joint;
• and
• performing a mechanical pulsation test on the at least one brazed joint from the smaller segment.

A method of testing a brazed joint on a port fuel injection rail assembly, comprising:

• filling an inner port fuel injection rail chamber of a port fuel injection rail assembly with a curable medium while in liquid state, wherein the port fuel injection rail assembly has a metallic main body tube running longitudinally defining the inner port fuel injection rail chamber, and at least one metallic component joined onto the main body tube, the connection between defining a joined joint;
• curing the medium into a substantially solid state;
• cutting through the main body tube and the cured medium substantially orthogonally to the longitudinal direction to isolate a smaller section of the port fuel injection rail assembly with at least one joined joint;
• fixing the smaller section of the port fuel injection rail assembly into a vice-like fixture to hold the smaller section;
• attaching the corresponding component of the at least one joined joint of the isolated smaller section to a mechanical pulsation device to input mechanical pulsations into the component relative to the fixed section of the port fuel injection rail assembly to test the robustness of the joined joint;
• and
• operating the mechanical pulsation device until the joined joint fails.