seems it would be easy to attach a pressure guage to the exhaust and find out. Note that in a turbocharged engine, the intake prussure goes from negative yo positive as the turbo spools up under load; i have read about ethanol injection to cool intake temp and use ethanol / water mixes at all concentrations simply by using intake pressure to feed eth into the intake at high load/throttle caonditions. very simple and elegant, produces the desired effect at the desired time without any control system besides a small tube run to the tank, which must be sealed and withstand turbo pressure (usually 6 psi, probably never more than 15 psi). anton ---------- >From: "David Teal" <[EMAIL PROTECTED]> >To: <biofuel@yahoogroups.com> >Subject: Re: [biofuel] back to basics >Date: Apr 30, 2001, 8:18 AM >
>Ben, >That's a smart idea, but I'll bet somebody will come along with all the >reasons why not. >Meanwhile, let's figure out how to physically tap into this pressure source >without spoiling any expensive bits. How much pressure is there in the >exhaust? How does it vary with revs and throttle setting? Is it enough, too >much or what? > >David T. > >"With no vacuum available, why not install a tap in the exhaust and run it >to >a sealed >container of the fluid to be fogged into the intake? >The exhaust pressure would presumably be 0 at idle and go up with engine >speed and load, so you could easily tailor the delivery. >This is how fuel is delivered on my Radio controlled car." > >Actually, although exhaust pressure is used on model cars and 'planes, this >is only to reduce the effect of tank surge; the primary fuel delivery force >is still the venturi. Try disconnecting the exhaust pressure pipe; it >doesn't make all that much difference to mixture. > >Peugeot and some other diesels recycle a proportion of exhaust gas back into >the induction side under certain conditions to reduce NOx formation. > > > >Biofuel at Journey to Forever: >http://journeytoforever.org/biofuel.html >To unsubscribe, send an email to: >[EMAIL PROTECTED] > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
