[Diy_efi] Intro, and q's about fuel economy

[Alexei Pavlov]

> The way that EGR reduces pumping losses is by providing an inert diluent
> for the fuel/sir mixture, thus avoiding any need for a throttle. It DOES
> hurt cycle efficiency, however--because it usually lowers the peak cycle
> temperature (unless, of course, you use really HOT exhaust for the EGR !

I understand that can work for middle loads. But is it usable for idle ?
I mean with the conventional system the 'cycle dispersion' (is it a
right
term ? ) is high. What would it be with exhaust gazes added ?

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