Quote:
Originally Posted by johnny87
Exhaust gas recirculation lowers combustion temperatures to reduce the formation of nitrous oxides(NOx) not to protect the head gaskets from blowing.
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That is true. However a side effect of lowering the combustion temperatures
IS lower cylinder pressures. Another side effect of using EGR is that timing must be increased due to the slower burn.
So, if you increase the combustion temps and you will also raise cylinder pressure. In addition, with the cleaner, quicker burn, the timing will also be increased. Increased timing also raises cylinder pressures. So you are effectively raising cylinder pressures twice..
Again though, we don't know how much we are raising the pressures, so we don't fully know if the increase is enough to put the headgaskets in danger.....
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