Technician A says that EGR systems lower in-cylinder NOx formation by reducing peak cylinder pressures and temperatures. Technician B says EGR systems reduce NOx emissions by reducing displaced air in the cylinder. Who is correct?
A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

EGR systems lower in-cylinder NOx formation by recirculating a portion of the exhaust gases back into the intake, which reduces peak cylinder temperatures and pressures, thus reducing NOx formation.

Technician a Says That EGR Systems Lower In-Cylinder NOx Formation