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ENGINE
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H. Exhaust Gas Recirculation System (EGR) :
Exhaust Gas Recirculation System Schematic Layout :
Description :
The Exhaust Gas Recirculation
(EGR)
system
(include EGR cooler module with EGR and
bypass valve)
is designed to reduce the amount of
Oxides of Nitrogen
(NOx)
created by engine.
In EGR system a part of exhaust gas from the
exhaust manifold is made to mix with the fresh air
going into the engine.
The EGR quantity is controlled by ECU based on
environmental and engine conditions.
When the engine is cold, the exhaust gas is
directly fed into the intake manifold through the
bypass valve. When the engine warms up and the
exhaust gas temperature increases the bypass
valve closes. This results in the exhaust gas
flowing through the EGR cooler to reduce its
temperature.
Location :