Technician A says that a higher fuel pressure in a common rail system can result in a better atomized fuel spray, which improves combustion efficiency. Technician B says that common rail systems typically operate at lower fuel pressures than traditional mechanical fuel injection systems. Who is correct? a) Technician A b) Technician B c) Both Technician A and B d) Neither Technician A nor B

Technician A is correct as common rail systems operate at higher fuel pressures than traditional mechanical fuel injection systems. This leads to better atomization of fuel spray, improved combustion efficiency.

Explanation:

Technician A is correct. A common feature of common rail systems is the ability to operate at higher fuel pressures than traditional mechanical fuel injection systems. This high pressure can achieve a better atomized fuel spray, leading to improved combustion efficiency. Technician B is incorrect in stating that common rail systems usually operate at lower fuel pressures. They typically run at higher pressures to gain the aforementioned benefits.

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