While discussing common rail fuel injection systems: Technician A says the individual injectors are activated by the high pressure present in the fuel rail. Technician B says some late-model CR systems have an intensifier in the injector that allows for an increase in fuel pressure. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because in common rail fuel injection systems, the injectors are indeed activated by the high pressure present in the fuel rail. Technician B is also correct because some late-model common rail (CR) systems incorporate an intensifier piston within the injector to further increase the fuel pressure before injection, allowing for finer atomization and better control over injection timing and quantity.

While Discussing Common Rail Fuel Injection Systems: Technician a Says