SSANGYONG RODIUS 2004.09 Manual page 224

05-4
1913-01
HUBER EGR System for IDI Engine
(Including the EGR Valve Potentiometer)
The other big difference between the HUBER EGR and EGR controller for DI engine is that
from two vacuum modulator, one is same as being the modulator for EGR valve whereas the
HUBER EGR system's the other modulator controls ALDA of injection pump and the DI
engine's the other modulator controls waist gate of the turbo charger.
This difference is in accordance with the difference in fuel injection method where the IDI
engine has mechanical injection system and DI engine is capable of making electronically
controlled fuel injection.
In other word, to reduce the amount of the fuel injection in no-load rapid acceleration mode, the
IDI engine's HUBER EGR utilizes solenoid valve to disconnect the connection circuit
between intake manifold and ALDA causing negative pressure to occur in the vacuum
modulator to reduce the amount of fuel injection. When DI engine, basing input signal from the
related sensors such as acceleration pedal sensor and engine RPM, recognizes that current
mode is the noload rapid acceleration mode it reduces the amount of fuel injection by sending
short electrical signal to the injector.
Therefore, disregarding the modulator for the EGR valve in DI engine, one must keep in mind
that the other modulator is used to control the booster pressure valve in turbo charger.
ENGINE EXHAUST SYSTEM
RODIUS 2004.09
EGR System for DI Engine