Feature Of Egr System - wsm 03-CR-E4 Workshop Manual

MECHANISM
5. Exhaust gas recirculation (EGR) system 4. ENGINE

5.2 Feature of EGR system

The primary purpose of the EGR system is to reduce NOx in the exhaust gases.
NOx is generated through combustion at high temperature.
Combustion chamber temperature is lowered by the EGR system to reduce NOx.
The EGR system extracts some of the exhaust gas and recirculates it to the intake side.
This reduces the amount of available oxygen, lowers combustion temperatures and reduces NOx emissions.
The amount of exhaust gas returned to the combustion chamber is controlled using the amount the EGR valve is
opened.
4-45
03-CR-E4,03-CR-TE4BG
KiSC issued 02, 2021 A