Quote:
Originally Posted by Jffeijao
Furthermore, EGR is not the cause of CBU. It is on every high performance diesel and in contrary to your statement is coming back to gasoline engines. Funny that it is one of the responsible for engine efficiency improvement you refer.
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What? I guess if you move the goalposts to a totally different version of CBU you *might* be right. But you're way off base with respect to CBU as we know it here.
EGR is not an efficiency benefit or improvement. That's actually the whole reason it works. EGR lessens the volume of available oxygen in the cylinder, slowing down the burn and lowering chamber temperatures. Since NOx is only formed at high temperatures, lowering chamber temperatures drastically reduces NOx. Its not an efficiency improvement to load the combustion chamber up with noncombustible material.
I don't mind playing within the rules, but when it means a choice between slightly lower emissions and several thousand dollar repairs vs $10 in material, better mileage, better performance, and no repairs, the choice is incredibly clear.