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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
I think area of the slits are not directly what determis fuel flow.

That is, how much that flows through the slits is not equal to the flows to the injectors.

The slits effect the "differential pressure " between the upper and lower chambers. Increasing the differential pressure is like loosening the spring tension in a fuel pressure reg and effects how much the regulator membrane can distort and thus how much fuel passes.

I t makes sense the injector would act to restrict to some level.

Thus, making it larger could increase flow.

The main function of the injector in a CIS is probably to maximize atomization.

With that comes pressure build up, any increase in pressure indicates restriction.

We can overcome that restriction by increasing pressure or by reducing the restriction.


I truly do to know if the injector is "the" restriction. I very much look forward to seeing results of testing.



The rest of this is just educated guessing among friends.
Old 01-06-2010, 12:50 PM
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