Fuel Econ and Hiway Mode

[Jeremy Gonyou]

>Wouldn't the advantage from EGR come from an inert gas in the cylinder,
>thereby increasing the effective compression ratio at part throttle(filling
>up the cylinder with something other than precious fuel and still allowing
>the mixture to be close to stoichometric)?


It may be inert, but it's still compressible.  No help there.

There ya go.  Someone needs to invent the very-small-rocks-egr :)

Jeremy
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