Technician A says recent CR fuel systems can produce injection pressures exceeding 2,450bar(35,000 psi). Technician B says that larger size fuel droplets are produced when fuel injection pressure are close to their maximum. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because modern Common Rail (CR) fuel systems can indeed produce injection pressures exceeding 2,450 bar (35,000 psi), which is a characteristic of these systems to improve fuel atomization and engine efficiency. Technician B is incorrect because higher injection pressures typically result in smaller, not larger, fuel droplets, which enhances fuel atomization and combustion efficiency.

Technician a Says Recent CR Fuel Systems Can Produce Injection