SSANGYONG Rodius 2012.07 Manual page 353

15-28
(9) EGR control
A. Overview
The EGR (Electric-Exhaust Gas Recirculation) valve reduces the NOx emission level by recirculating
some of the exhaust gas to the intake system.
To meet Euro-V regulation, the capacity and response rate of E-EGR valve in D20DTR engine have
been greatly improved. The EGR cooler with high capacity reduces the Nox, and the bypass valve
reduces the CO and HC due to EGR gas before warming up.
Also, the engine ECU adjusts the E-EGR opening by using the air mass signal through HFM sensor. If
the exhaust gas gets into the intake manifold when the EGR valve is open, the amount of fresh air
through HFM sensor should be decresed.
B. Components
Oxygen sensor
HFM (intake
air
temperature)
Crankshaft
position
sensor
T-MAP Electric throttle
sensor body
Coolant
temperature
sensor
Accelerator
pedal
module
E-EGR valve
E-EGR cooler
D20DTR
ECU