SSANGYONG KYRON 2010.01 Manual page 97

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 no-load 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
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