Re: CIS Cheap Power

[Doug Johnson <tqc@worldnet.att.net>]

> I sure hope he can't - it's wrong.  CIS assumes air density of 1 bar at input - 
> that was my precise complaint about "fooling" it by making the input air more 
> dense.  You'll notice that _no_ current injection systems measure air 
> quantities at any point other than atmospheric input.
>  
Doesn't CIS measure _mass_ flow rate, which _is_ affected by density?
> 
> Nah.  The _only_ economy/performance tradeoff is the one under your right 
> boot.  You get maximum energy out of a fuel/air mixture at a quite specific 
> ratio - the stochiometric ratio.  You get maximum performance by using a _lot_ 
> of both components at this same ratio - you get maximum economy by using just 
> enough of both components - but again - at the same ratio.  The trick is to get 
> the ratio right (with minor deviations for things like cold engine surfaces) 
> across the entire load/rpm/temperature/pressure range.

Well, maybe on a sheet of paper, but I don't think it works that way on
asphalt.  In stoichiometric oxidation, there is nothing left except
water and carbon dioxide.  Doesn't sound like the way _my_ engine runs.