Best Mufflers specialises
in fabricating custom exhaust systems, custom headers,
custom extractors, sports and high performance custom
exhausts. more...
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Late model EGR systems need to control the flow of recirculated
exhaust gas back into the intake system . Too much flow
will retard engine performance and cause hesitation on acceleration.
Too little flow
will increase NOx and may cause the
engine to ping
this sensor monitors the operation of the
EGR system by detecting the temperature
of the recirculated exhaust gas.
The Exhaust Gas Recirculation (EGR) valve is used to
send some of the exhaust gas back into the cylinders to
reduce combustion temperature. Nitrous oxides form when
the combustion temperature gets above 2,500 degrees. This
happens because at these high temperatures, the nitrogen
in the air mixes with the oxygen to create nitrous oxides.
By recirculating some of the exhaust gas back through
the intake manifold lowering the combustion temperature.
As the combustion chamber temperature is reduced, engine
detonation potential is also reduced. If the EGR valve
is not working, onboard diagnostics (OBD) systems will
set a code and the power control module (PCM) will use
a backup timing curve that has less advance to prevent
engine ping. Less timing advance means less performance
and economy.
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