?Technician A says that some diesel post-2007 diesel engines fitted with DPFs use a dosing injector. Technician B says that diesel fuel subsystem charging pressure values can be much higher in engines that use dosing injectors. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because many post-2007 diesel engines equipped with Diesel Particulate Filters (DPFs) use a dosing injector to introduce fuel into the exhaust stream to aid in the regeneration of the DPF. Technician B is also correct because the diesel fuel subsystem, including the dosing injector, often operates at higher pressures to ensure efficient atomization and mixing of the diesel fuel in the exhaust stream for effective DPF regeneration.

?Technician a Says That Some Diesel Post-2007 Diesel Engines Fitted