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1. 08:24 PM - Re: HHO (Bill Hamilton)
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Folks,
A friend of mine is involved in development testing with Mercedes.
Their new engine lines with direct petrol injection are producing
efficiencies that that translate into big sedans with plenty of performance,
ie the same power/weight ration as now, but reducing fuel consumption from
12/16 lt:100km, down to 5/8 lt.:100km, ie fuel consumption in already
reasonably efficient engines reduced by half.
It's all about increasing compression ratios, but chamber/injector design
reducing/eliminating pre ignition or detonation.
These engines will equal or better automotive diesels.
Regards,
Bill Hamilton.
If you want to do the maths, approx. 4 lt= 1 US Gallon, 1 km approx. Equals
5/8 of a statute mile.
From: owner-commander-list-server@matronics.com
[mailto:owner-commander-list-server@matronics.com] On Behalf Of willis
robison
Sent: Saturday, October 11, 2008 7:44 AM
Subject: Re: Commander-List: HHO
>From an engineering and Thermodynamics standpoint, the internal combustion
engine (at least the Otto Cycle) is pretty maxed out. For regular
piston-gasoline pushrod or overhead cam engines the total efficiency is
dictated by the maximum pressure you can obtain. Lately, higher compression
and higher temperatures have pushed the efficiency to the limits obtainable
with current materials (aluminum blocks, nitrided steel cylinders etc).
computer control of the mixture took it to another level, but noone will
allow a micro controller on an AC without going through an extensive Qual
process.
Newer High Temperature materials may increase this but absolute "e" is still
= [T(high) - T(low)]/T(low).
Diesel's are less dependent on T(high) but are still dependent on the Max
pressure. Thats why they are so good at being turbocharged at high
altitude. Same goes for Brayton cycle engines (jets). in that case the
limits are [P(high) - P(low)]P(low).
Now you know why those old---GSO-480's are still popular. Lots of juice and
still efficient at high altitude if you roll back on the throttles. (but who
would?)
bud
--- On Fri, 10/10/08, Chris <cschuerm@cox.net> wrote:
From: Chris <cschuerm@cox.net>
Subject: Re: Commander-List: HHO
Don wrote:
> I try and keep and open mind, one day I firmly believe, a
> revolutionary change will happen to greatly improve our internal
> combustions engine.
Well Don, I applaud your positive outlook. From a purely scientific
perspective, there are very few areas to improve a traditional Otto
cycle engine. Even if some new miracle material were to arrive that
would allow unlimited temperature operation, basic physics still apply.
Small efficiency gains could be had, but there is simply no room for
huge improvement. Energy out equals energy in minus losses. As long as
the "energy in" part involves oxidation of petroleum products, you
are
limited by that reaction. Most likely, someone will eventually come up
with an efficient means of directly generating electricity from a
chemical reaction and the next "great advancement" in transportation
will involve electric motors. I'm not aware of any ground-breaking
technology in that arena currently under development though.
cheers,
Chris
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