[Diy_efi] Re: surely not hydrogen

[Garrett P. Beauregard]

Phil,

What particulars would you like to know?

Emissions are very low for CO and CO2 and nearly zero for hydrocarbons--the
carbon comes from the oil left on the cylinder walls. NOx is pretty good but
is dependant on combustion temps (of course). Hydrogen burns very hot which
is why we run the extremely lean AF ratios.

Garrett

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
Behalf Of Phil Lamovie
Sent: Monday, July 19, 2004 10:43 AM
To: A list for Do-It-Yourself EFI
Subject: [Diy_efi] Re: surely not hydrogen



gm wrote

surely not hydrogen, considering that it liquefies at modest pressures.

Modest in galactic terms maybe.

-273 C boiling point and still not a liquid at 10,000 psi means
it's a pain to make, pump, store, and inject,.

Oh by the way the stuff that comes out of the ground is not hydrogen
it's Natural gas 76 C, 24 H and has worse energy properties than hydrogen
for
any
given mass.

Any more info on those engines Garrett ?

I'm especially interested in the lean burn combustion characteristics and
the tail pipe emissions.

Phil


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