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GF,<BR> <BR>Early in my life I worked at the E. I. DuPont Tetraethyl Labs which made the fuel additive you describe. It was a lead based fuel additive which delayed the onset of compression ignition to allow higher compression ratio (and more powerful) engines. The fuel additive was in all of the fuel and used all the time. DuPont made tons of the Tetra Ethyl Lead fuel additive for military and civilian use in high compression engines.<BR> <BR>ADI water and methanol injection only occurs for short periods of time such as during takeoff where spurts of overfueled power was needed.<BR> <BR>Check out the following article and it will explain the difference.<BR> <BR><a href="http://www.enginehistory.org/r-4360ops1.shtml">http://www.enginehistory.org/r-4360ops1.shtml</a><br><br>Art <br><br> <BR><div><hr id="stopSpelling">To: gasification@lists.bioenergylists.org<br>From: gfwhell@aol.com<br>Date: Fri, 1 Jul 2011 01:51:32 -0400<br>Subject: Re: [Gasification] Producer Gas Engine Paper<br><br><font color="black" size="2" face="arial">
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<div>Hi Art,</div>
<div>They have been using anti knock additives for the purpose you mentioned since the early 1930's most of which were lead compounds, like Tetraethyl lead which were additives,not injected,<br>
</div></font><div><font color="black" size="2" face="arial"><a href="http://www.wwiiaircraftperformance.org/150grade/150-grade-fuel.html" target="_blank">http://www.wwiiaircraftperformance.org/150grade/150-grade-fuel.html</a></font></div><font color="black" size="2" face="arial">
</font></div><font color="black" size="2" face="arial">
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<div>I checked out this article looking for "ADI"unsuccessfully. The system description of operation and purpose described to me was separate from the fuel tank.</div>
<div>My source was a P51 B pilot. </div>
<div>I found nothing in the attached report, supporting "injection" for extra power. an "adjustable blower" up to 60 psi inlet manifold seems to have been the order of the day.</div>
<div> </div>
<div>GF</div>
<div><br>
<br>
</div>
<div style="color: black; font-family: arial,helvetica; font-size: 10pt;">-----Original Message-----<br>
From: Art Krenzel <phoenix98604@msn.com><br>
To: gasification <gasification@lists.bioenergylists.org><br>
Sent: Wed, Jun 29, 2011 5:12 pm<br>
Subject: Re: [Gasification] Producer Gas Engine Paper<br>
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<div dir="ltr">GF,<br>
<br>
As a pilot who has friends who flew those "round engined aircraft with water injection" I would like to add their view. Just a note, he was just walking out to fly a B-29 at Osh Kosh, WI. <br>
<br>
The water and methanol mixture was called ADI (Anti Detonation Injection) and used just for that. When significant amounts of additional power was needed, more fuel was added to the engine. With more fuel came higher combustion chamber temperature causing parts of the piston head and cylinder to heat up and would cause the fuel air mixture to detonate. Detonation of fuel in a cylinder results in a loss of power. The higher mass of water and methanol being injected into the cylinder caused the air mixture to cool down and prevent the hot spots from developing. Thus they were able to add more fuel and get more power without detonation.<br>
<br>
My experience is with water injection in jet engines, specifically the F-105 and Harrier. Again the goal is more power without overheating the engine. The increased mass flow through the engine increases the thrust by about 10% by being able to add more fuel without overtemping the engine.<br>
<br>
Art Krenzel<br>
<br>
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<hr id="ecxstopSpelling">
To: <a href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</a><br>
From: <a href="mailto:gfwhell@aol.com">gfwhell@aol.com</a><br>
Date: Wed, 29 Jun 2011 15:23:54 -0400<br>
Subject: Re: [Gasification] Producer Gas Engine Paper<br>
<br>
<font color="black" size="2" face="arial">
<div><wbr>Regarding H2 as an accelarent. for the power stroke of an IC.</div>
<div>I have read that some research regarding the detonation of fuel air mixtures, using the addition of metal catalyst's permanently attached to the piston or cylinder walls, </div>
<div>This accomplished a high temperature reaction which provides "extra" hydrogen derived from steam. </div>
<div>This being a development originating from research carried out on WW 2 fighter aircraft engines, to obtain a power boost during combat operations, including the injection of a water/methanol mix during the required "boost" period.</div>
<div>It now seems that we are to have this mixture imposed by Government mandate without the "catalysts" to run our gasoline engines, Perhaps we should all use platinum tipped spark plugs to help with the reaction.</div>
<div>All thanks to the corn lobby.</div>
<div> </div>
<div>GF </div>
<div> </div>
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