[Diy_efi] Fuel cycling ?

[Mike]

Sorry - my mistake I should have said 'L-Jetronic' <sigh>

rgds

mike


At 09:44 AM 29/11/2002 EST, you wrote:
>Mike wrote, 
>
>Some 20 years back I recall reading an article about fuel cycling
>on a variation to a K-Jetronic system, it goes like this:-
>
>a.  Basis is K-Jetronic system with sequential injector
>    firing.
>
>b.  Operation is normal except when engine warmed up and on
>    'steady state' cruise, the ECU would selectively skip
>    a fuel ijection cycle but keep all else the same...
>    ie. Once in say 6 engine revolutions (or more depending
>    on load) certain cylinders would have their fuel injection
>    suspended.
>
>Hello Mike,
>
>I don't think that is possible, K jet uses mechanical injectors that spray 
>all the time like garden nozzles.  Clever little vibrating pin in the tip
for 
>atomization.  Cadillac experimented with shutting down alternate cylinders 
>using electronic injectors. I think the "4-6-8" was a nightmare for the 
>company.  The Northstar ECU has a limp home mode that shuts down alternate 
>cylinders to "air cool" the engine during cooling system failure. It is 
>acceptable under the warrantee to drive the car over 50 miles with "no  
>coolant".
>
>Paul Saltwick
>
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>

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