Two technicians are describing high-pressure cooled (HP-CEGR) EGR systems. Technician A says that an HP-CEGR system does not use a throttle plate to draw exhaust in, instead a VGT pressurizes exhaust gases high enough to push exhaust into the boosted air intake. Technician B says that cooled EGR gas redirected from the exhaust manifold is pressurized to overcome intake boost pressure called high-pressure cooled EGR (HP-CEGR). Who is right?
A)A only"
B)B only"
C)Both A and B
D)Neither A nor B"

Question

Quizplus · Accepted Answer

Both technicians are correct. Technician A is correct in stating that HP-CEGR systems use a VGT to pressurize exhaust gases, eliminating the need for a throttle plate. Technician B is also correct in explaining that the EGR gas is pressurized to overcome intake boost pressure in HP-CEGR systems.

Two Technicians Are Describing High-Pressure Cooled (HP-CEGR) EGR Systems