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

[Mike]

At 10:47 PM 16/12/2002 +0800, you wrote:
>I'm still trying to get up off the floor from laughing.

:-)
Glad you liked the joke, in that I started out being serious
<sigh> now I'm not so sure, um , this has got me thinking about
variable compression, after all an inert gas displacement
would accomplish the same thing (more or less)...

rgds

mike

>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)
>
>> I would have thought the 0.2% or less to be negligible in terms
>> of adding fuel to a cylinders mix for its next power cycle ! !
>
>Shhh.. some people are into "recycling". ;-)
>
>> >What you want is an engine configuration that requires no
>> >enrichment (use EGR for enrichment) and has a flat torque curve.
>> >You can cam the little motor to peak torque really early, but a
>> >fully variable cam timing would be the best.
>
>> Huh - I am definitely missing something here, 'use EGR for enrichment',
>> pray tell what 'degree' of enrichment would you expect ?
>
>I need another laugh as well.
>
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