Testing apparatus for a fuel injector

A testing apparatus for a fuel injector which delivers fuel into an internal combustion engine, wherein the fuel injector comprises an inlet for receiving fluid to be injected during a test and a nozzle end for delivering the fluid through an injector outlet during the test, the testing apparatus comprising:

• an upper mount for receiving the inlet of the fuel injector;
• a lower mount located beneath the upper mount for receiving the nozzle end of the fuel injector;
• a fluid flow measurement device located downstream of the fuel injector under test and being connected to an outlet line from the fuel injector under test, wherein the fluid flow measurement device is provided with a damper device which limits fluctuations in fluid pressure of fluid flow within the outlet line;
• wherein the damper device includes a damper inlet and a damper outlet and a chamber located in a flow path between the damper inlet and the damper outlet, and a restriction located at an exit port from the chamber, wherein the restriction is positioned such that fluid exits through the restriction rather than filling the chamber completely, thereby defining a cavity within the chamber which is filled with trapped air at atmospheric pressure which acts as a damping medium for fluid flowing through the damper device during injector testing;
• and
• at least one of:
• 1) An inlet adaptor for use with the fuel injector which is a first type, wherein the inlet end of the fuel injector of the first type fits into the inlet adaptor to allow a flow of fluid to be delivered through the inlet adaptor to the fuel injector of the first type, the inlet adaptor being removable from the upper mount when a fuel injector of a second type is tested, or being interchangeable with a different inlet adaptor when the fuel injector of the second type is tested;
• and
• 2) An outlet adaptor for use with the fuel injector of the first type, and being removable from the lower mount when the fuel injector of the second type is tested or being interchangeable with a different outlet adaptor when the fuel injector of the second type is tested.