EGR Valve function

03-18-2002, 02:19 PM

agupta

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EGR Valve function

Can anyone please explain to me the functioning of the EGR valve - I know it recirculates some of the exhaust gases back into the combustion chamber, but how does that reduce the combustion temperature (I believe that's what it does, so that the NOx emmissions are lower).

If one has to disconnect the EGR valve, what precautions should one take?

thanks.

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