Atomisation

[bill.shurvinton at nokia.com]

I must admit to have been hunting for some suitable injectors following
some posts on another list about certain types having better spray
patterns than others for non-port applications, but gave up when I
decided that I was getting ahead of myself.

I have a horrible feeling that this is one of these empirical trade-off
areas where you end up trying umpteen different strategies and end up
back where you started.

Maybe Bruce is right with his Single P&H per cylinder/rotor
position......

-----Original Message-----
From: ext Greg Hermann [mailto:bearbvd at mindspring.com]
Sent: Monday, December 10, 2001 2:13 PM
To: diy_efi at diy-efi.org
Subject: RE: Atomisation


At 11:40 AM 12/10/01, bill.shurvinton at nokia.com wrote:
>Interesting...I must admit that I had thought that, under part
throttle,
>as the runner velocity was low it was better to inject at the narrowest
>point. I hadn't thought about whether the poorer atomisation would
>countermand this.
>
>I guess we are assuming here that a TBI system will have a larger ID
>than the carb as it will not need a venturi?
>
>Bill

I think Dave is more onto the point that there is sonic flow going past
the
edges of the throttle butterfly with a TBI at part throttle which does a
pretty respectable job of atomizing the fuel.

Greg
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