vapour locking

[Peter Cobbold]

Suffering from vapour locking? (maybe not now but in summer heat) - then have a look at section 2.1 here:

 

http://www.concawe.be/DocShareNoFrame/docs/1/PGAMMBNDDOKLLEFIFIHPFEABVEVCBW969YBDC3BYWKA3/CEnet/docs/DLS/Rpt_08-3-2008-01143-01-E.pdf

 

The insert plot in figure shows that 5%ethanol in petrol raises the vapour pressure maximally, favouring vapour locking.

That raises the question of which pump fuels contain ethanol and which do not.

[Clarkey]

Suffering from vapour locking? (maybe not now but in summer heat) - then have a look at section 2.1 here:

 

http://www.concawe.b...-01143-01-E.pdf

 

The insert plot in figure shows that 5%ethanol in petrol raises the vapour pressure maximally, favouring vapour locking.

That raises the question of which pump fuels contain ethanol and which do not.

 

 

Hi Peter.

Sorry cant open the link

All UL95 sold in the uk now has 5%ethanol in so does Tescos super unleaded, Esso, Shell, and BP all have Ethonal free Super unleaded i.e BP Ultimate and Shell Vpower,I know for a fact that there in nochange for the super grades as yet to have Ethanol in Hope that helps.

 

<div>Also the oil companies produce winter and summer grade fule so they will monitor the RVP (Reid Vapour Pressure)</div><div><span class="Apple-style-span" style="font-family: verdana, arial, sans-serif; font-size: 11px; -webkit-border-horizontal-spacing: 5px; -webkit-border-vertical-spacing: 5px; "></span><br></div>

Edited January 3, 2011 by Clarkey

[Peter Cobbold]

Martin

That is very useful information - not seen it elsewhere: oil companies seem to guard their blending protocols like crown jewels.( I wont ask how you got it!)

Apologies for failed link, that CONCAWE report can be found here:

http://www.concawe.be/content/default.asp?PageID=569

-- go to bottom of page, select page 5, the report is number 3-08.

Peter