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Old 10-21-2004, 08:12 PM
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Question

Quote:
Originally posted by oab_au


...the way the EGR is suppose to work is this. When the engine gets up to operating temp, the ECU opens the EGR solenoid valve, to allow exhaust gas to enter the inlet manifold to cool the combustion chamber down, to prevent the formation of oxides of Nitrogen in the exhaust gas.

Out of curiousity, how does recirculating the exhaust gas into the intake manifold cool the combustion chamber? Aren't the exhaust gasses really hot (to the tune of several hundred degrees Fahrenheight)?

- John
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