fuel evaporation & injectors

[Robert Harris]

The point is simple.  The fuel and air will pass the valve or it don't go into 
the engine.  The valve face reaches combustion temp and is held at exhaust temp 
for at least half the time.  Air flowing into the cylinder COOLS this valve - 
but heats the air reducing VE.  Fuel sprayed here helps cool the valve. 
 Upstream or where-ever its going to pass this point and this temp.  Might as 
well use it if you can.

If the first ingredient ain't Habanero, then the rest don't matter.
Other Obsessions: Ferro-Equinary , 1972 "Killer Whale" Mustang
Currently Interred in the Peoples Democratic Republic of California - Stalag 
Montclair
Puck da guns - ban Politicians!!!!!
Robert Harris <bob at bobthecomputerguy.com>


-----Original Message-----
From:	d houlton x0710 [SMTP:tc75918 at hpnfssvr.mdhc.mdc.com]
Sent:	Monday, January 12, 1998 3:15 PM
To:	diy_efi at efi332.eng.ohio-state.edu
Subject:	Re: fuel evaporation & injectors

Robert Harris wrote:
>
> One very simple thing to make life very easy.  If you can the piss dribble
> injector stream directly onto the intake valve, such as by locating the 
nozzle
> in the valve pocket, then you have magic.  It seems like the back side of the 
> valve averages about 600 F or more depending on load.   This should totally
> vaporize and keep vaporized the fuel.
>

So what's the temp at which the fuel/air mixture will spontaneously combust?
600 F seems awfully hot.  Is there any danger of the fuel exploding instead of
just vaporizing?

--Dan