Technician A says that fuel delivery timing in diesel CR fuel systems is limited by cam profile. Technician B says that a major advantage of diesel CR systems is their ability to manage fuel injection pressures without regard to engine rpm. Who is correct?

Question

Quizplus · Accepted Answer

Technician B is correct because diesel Common Rail (CR) fuel systems can indeed manage fuel injection pressures independently of engine rpm, which is a major advantage over older diesel injection systems. Technician A is incorrect because in CR systems, fuel delivery timing is not limited by cam profile; instead, it is electronically controlled, allowing for more precise fuel delivery.

Technician a Says That Fuel Delivery Timing in Diesel CR