DFI, Batch Fire, and other myths

[Walter Sherwin]

Why would it be a problem to deal with lots of boost when all the injectors
(or a bunch) are opened at the same time?   Is the problem associated with
pump pressure versus flow capacity, or with the actual manifold fuel
dynamics?  Just curious.

Walt.

-----Original Message-----
From: Sandy <sganz at wgn.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Wednesday, January 20, 1999 9:37 PM
Subject: RE: DFI, Batch Fire, and other myths


>One thing that is very inportant to remember about injection CIS vs Batch
>vs SFI is on cars that have boost it is a problem to deal with lots of
>boost when all injectors (or a bunch) are opened at the same time. SFI does
>much better in those situations, as it is easier to deal with the fuel
>pressure vs boost pressure problems.  The ideal system for me that would be
>very easy to do was a concept that I posted a millenium ago, just do a SFI
>Batch system (Pat Pend, (c) etc), where they are not in sync to anything,
>but follow a SFI pattern. No engine sensor or sync is required (read
>simple) and you get most all of the needed SFI benny's. No fuss no muss.
>The over-engineering problem has plagued the efi332 project for sometime,
>and getting something simple running is the way to go!
>
>Some rambelings
>
>Sandy