[Diy_efi] Turbos - spooling etc

CJ Virtual cold_steel45 at yahoo.com
Tue Apr 1 20:50:57 GMT 2003


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When you kick that much oxygen from the air in the exhaust, it creates a very lean condition. This lean condition will cause a situation similar to that of a blow torch and can result in the blades on the turbine melting (burning). This how ever depends on hoy much air you inject. Anothe question is, what flow rate will give y  ou the air needed.  
You can spool easier by using NOs. Nos kicks in extra fuel and oxygen, then the turbo takes over
 Bill Washington <bill.washington at nec.com.au> wrote:Fellas,
A crazy thought just occurred to me - does anyone know if the 
following has been tried, and if so with what results:
If a compressed air bottle was plumbed into the exhaust manifold 
(pre-turbo) through an electronically controlled valve arranged to give 
a (short) injection of HP air into the manifold when the WOT switch is 
hit, it should help spool the turbo quickly and give a (false) lean 
indication on the lambda sensor which should result in a brief 
enrichment - Rats, just remembered - the Lambda is ignored at WOT - Just 
a wild thought from someone with no direct experience playing with turbos.

Bill W



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<P>When you kick that much oxygen from the air in the exhaust, it creates a very lean condition. This lean condition will cause a situation similar to that of a blow torch and can result in the blades on the turbine melting (burning). This how ever depends on hoy much air you inject. Anothe question is, what flow rate will give y&nbsp; ou the air needed.&nbsp; 
<P>You can spool easier by using NOs. Nos kicks in extra fuel and oxygen, then the turbo takes over
<P>&nbsp;<B><I>Bill Washington &lt;bill.washington at nec.com.au&gt;</I></B> wrote:
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Fellas,<BR>A crazy thought just occurred to me - does anyone know if the <BR>following has been tried, and if so with what results:<BR>If a compressed air bottle was plumbed into the exhaust manifold <BR>(pre-turbo) through an electronically controlled valve arranged to give <BR>a (short) injection of HP air into the manifold when the WOT switch is <BR>hit, it should help spool the turbo quickly and give a (false) lean <BR>indication on the lambda sensor which should result in a brief <BR>enrichment - Rats, just remembered - the Lambda is ignored at WOT - Just <BR>a wild thought from someone with no direct experience playing with turbos.<BR><BR>Bill W<BR><BR><BR><BR>_______________________________________________<BR>Diy_efi mailing list<BR>Diy_efi at diy-efi.org<BR>http://www.diy-efi.org/mailman/listinfo/diy_efi</BLOCKQUOTE><p><br><hr size=1>Do you Yahoo!?<br>
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