Fluid injector testing system

An injector testing system, comprising:

• a testing rig, comprising:
• a receptacle defining an inner chamber, the receptacle having:
• an inlet for receiving fluid to be injected by an injector to be tested;
• a target outlet for receiving at least a portion of fluid to be injected through the inlet;
• and
• a runoff outlet for receiving fluid to be injected by the injector that misses the target outlet,
• the inlet, the target outlet and the runoff outlet opening into the inner chamber, the target outlet being across from the inlet;
• an injector mounting structure configured for mounting the injector to be tested outside of the receptacle;
• at least one fluid-quantity measuring device fluidly connected to at least one of the target outlet and the runoff outlet, the at least one fluid-quantity measuring device being configured to measure a quantity of fluid having flowed thereto from the at least one of the target outlet and the runoff outlet;
• a testing controller in communication with the at least one fluid-quantity measuring device, the testing controller being configured to:
• receive signals from the at least one fluid-quantity measuring device representative of (i) a first quantity of fluid having flowed to the at least one fluid-quantity measuring device via the target outlet, and (ii) a second quantity of fluid having flowed to the at least one fluid-quantity measuring device via one of the runoff outlet and both of the runoff outlet and the target outlet;
• based on the first and second quantities, determine a proportion of fluid that has been injected into the target outlet of the receptacle.