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

[Greg Hermann]

At 10:47 PM 12/16/02, Bernd Felsche wrote:
>On Mon, Dec 16, 2002 at 10:32:41PM +0000, Mike wrote:
>> At 11:47 PM 15/12/2002 -0800, you wrote:
>> >It's simpler than that.  The exhaust gases already have fuel in
>> >them to some degree.  You recycle that in place of actual fuel.
>> >The only way to eliminate throttle losses is to have no throttle
>> >at all.  You then do the throttling via modulation of the valve
>> >timing.
>
>> Is this an april fools post or am I missing something, do you class
>> the rather less than 0.2% of available fuel in the exhaust as
>> 'exhaust gases alread have fuel in them to some degree' ?
>
>I'm still trying to get up off the floor from laughing.
>
>Cooled EGR is used as an _inert_ gas by several manufacturers to
>reduce the effective cylinder volume and to reduce the tendency to
>knock while maintaining a high cylinder pressure. (e.g. VW in their
>FSI and Toyota)

Yes, among the "little people". You left out the likes of Mack, Cummins,
and Caterpillar !! :-)

Greg



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