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1.5L REVOTORQ BS VI ENGINE
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Components
A. Electronic Control Unit
The EGR system of the vehicle is controlled by the
Engine EMS ECU.
Block Diagram
The EMS ECU controls the EVRV which in turns
controls the EGR by applying vacuum or releasing it
as per the signal from the EMS ECU.
B. EGR Cooler
Assembly EGR cooler module consists of the
EGR cooler
EGR valve
The EGR cooler assembly is provided with inbuilt
electronic EGR valve.
The EGR Cooler is a heat exchanger that is used to
cool the exhaust gases before they are recirculated
to the intake manifold. The hot exhaust gases are
routed into the EGR cooler from the exhaust pipes
through the EGR valve. In the EGR cooler, the ex-
haust gases are made to pass through metal tubes
that are surrounded by engine coolant. The cooled
exhaust gas is more effective to help to reduce the
pollutants. The EGR valve is electrically operated by
the EMS.
C. EVRV (Electronic VacuumRegulating Valve)
The EVRV is an electro pneumatic solenoid switch,
which is controlled more precisely by the EMS ECU
based on the Engine speed, Coolant Temperature
and Accelerator pedal position etc. EVRV provides
variable vacuum levels to drive the EGR & TC.