The subject of balanced multi-orifice injectors is being discussed. Technician A says that the Delphi E3 unit injector is an example of a nozzle with electronically controlled variable NOP (Nominal Opening Pressure). Technician B says that some injectors use hydraulically balanced nozzle valves with servo actuators, but can also electronically vary nozzle opening until injection pressures. Who is right?

Question

Quizplus · Accepted Answer

Technician A is correct because the Delphi E3 unit injector does have electronically controlled variable NOP. Technician B is also correct because some injectors use hydraulically balanced nozzle valves with servo actuators and can electronically vary the nozzle opening until injection pressures.

The Subject of Balanced Multi-Orifice Injectors Is Being Discussed