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Date:         Wed, 27 Jul 2011 19:03:51 -0400
Reply-To:     Mike S <mikes@FLATSURFACE.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mike S <mikes@FLATSURFACE.COM>
Subject:      Re: dumb fuel injection question
Comments: To: Rocket J Squirrel <camping.elliott@GMAIL.COM>
In-Reply-To:  <1311802322.1894.11.camel@TheJackUbuntuNetbook>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 05:32 PM 7/27/2011, Rocket J Squirrel wrote...
>Three out of four fuel injections get squirted at a closed intake
>valve.
>What possible difference does the injector pattern make then? And what
>does the fuel do when waiting around for the valve to open? Puddle?


At 2040 RPM, each intake valve opens 17 times per second.  In the 59 ms
between valve openings, a droplet starting at rest would only drop 0.7
inches. Of course, there's a lot of turbulence in there, so things get
mixed up. There's simply not enough time for the fuel to puddle. It
just hangs around as a mist, waiting to get sucked into the cylinder.
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