Re: fuel injection

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: "Ian Cudmore" <yahootoo@xxxxxxxxxxx>
" 
" ok guys i have an idea, and i'm not so sure how easy it would be to set up 
" but... here goes, gotta be easier than dealying with all the computer crap
" baisicaly what i want to do is take the intake manifold off of a 4.0  and 
" set it up without a computer
" as i understand it with fuel injection you have baisicaly a pressureised 
" loop coming from and to the fuel tank, along with this is another line that 
" comes up to the injectors, in between the two is a reastatcontrolled by the 
" computer and as the throttle is increased <among all sorts of other 
" variables.. .but this is the important one> the reastat closes a valve off 
" and forces the fuel to move on to the injectors, wich are open.
" now, if one was to remove the computer, and reastat, and replace them with a 
" manualy controlled one, that you could hook up to say... a throttle cable it 
" could do the same job, only without having to mess with all those damn 
" sensors and wires and crap, and most importantly at a much lower cost.
" 
" what do you guys think is this totaly out to lunch or with some refinement, 
" great fun?

won't work, as others have said.  there is no rheostat; the computer
actually switches valves in the injectors every revolution of the
engine.  it calcs how long to open them based on sensor inputs.

you might be able to switch to bosch k-jet; this is more like what you
describe save that a paddle in the intake airstream actually controls
fuel flow.  throttles it by direct mechanical linkage, but it's
connected to the accelerator only by airflow.

later k-jet versions had an o2 sensor and electronic feedback on top
of the basic mechanical system.

then there's the original bosch jetronic of the '60s-'70s, based on
bendix patents iirc and using an -analog- computer.  i know only of
4-cyl apps though, no 6 version.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen

adh@xxxxxxxxxxxxxxxxx                       and think what none thought