Hi David and All,
--- David Roden <
evpost@...> wrote:
> On 7 Jul 2005 at 12:26, jerry dycus wrote:
>
> > They have automatic timing advance standard
> with
> > good 8.3-1 compression ratio and OHV's ...
> > With some tuning on top of that with a 3 gas
> > analyzer, it can be made as low as cars.
>
> Yep, those are proven techniques. They're the very
> ones that Detroit and
> Tokyo used to meet EPA standards - for 1973.
And still used today, No?
You fail to understand that a motor running at 1
speed is much easier, cheaper to control pollution
than an engine that must go from smooth idle to
5500rpm.
Also it warms up 95% faster and 90% of an engine's
emissions come in that period. And even less on mine
as it will rarely be started, mostly by far running on
electricity.
Unlike you, I had to actually make engines not
designed for emissions pass the same EPA standards as
Detroit's cars do and ours has to each pass an
emissions labratory standard we had to pay $5k/test
for so it didn't pay to fail it in order for the cars
to be imported as the next test would be $5k more!!
And as for the improvements in emissions, we are at
the point of no returns as now when a modern engine
drives, it's output is cleaner than the air going in
it in many localities except for a lack of O2.
The difference of 99% lower pollution is not much
difference between 99.99 though 100x cleaner in
numbers, in reality, it makes little difference to the
air as you are down to the point that plants breathing
make more airborne HC's than a car will.
>
> > Especially as they only are 1/10 or less the
> size,
> > thus put out even less volume of CO2 or other
> > pollutants/mile.
>
> In automotive applications, smaller engines usually
> release less CO2 per
> mile - as long as they burn less fuel per mile, a
> relationship that isn't
> necessarily 100% linear.
While a real small engine will probably always
make slightly more pollution than a larger one per hp,
one can get close enough so it doesn't make a real
difference.
Now add the fact that it is used only 5-10% of the
time and make fewer hp than a larger engine must make
just to rotate, and you should start to see just how
little pollution is made overall comparatively.
>
> Other emissions don't always scale with engine size
> as one might expect.
> For example, all other things being equal, a small
> engine working hard
> typically emits more NOx than a large one loafing
That depends on many things like mixture richness,
temp as if you lean an engine out for economy, it
raises the temps making more NOx. So a loafing engine
run lean will make just as much or more NOx as and
harder driven one on a richer mixture.
So one example does not make the point. The best
way to make lower pollution levels in tuning each
engine for the lowest levels.
And getting the mixture, timing correct is much
easier at 1 rpm, 1 load as I'll have!!
>
> Of course you can control NOx with a 3-way catalytic
Or run it rich enough and/or with enough EGR
and/or water injection and/or timing. There are many
tools to keeping NOx low.
But using a cat is a possibility as they are now
available in small engine sizes.
> converter. But then
> you have to devote space to the cat, and it requires
They don't take up any more space than a muffler
and you can use a much smaller muffler if you use a
cat. Anyway I have the room, it's weight I need to
keep low.
But I'd use a cat for HC's, not NOx as there are
better ways for that.
> precise engine control -
> meaning you need a microprocessor, just as the
> automakers discovered 25
> years ago.
Only on variable speed ICE motors which mine is
not.
When you design something you can do a lot of
things to get just what you want. I use steady
speeds/load to simplify my emissions control while
getting a better result. KIS
>
> > If used with E85 or Ethanol, even better!!
>
> Ethanol is not a cure-all. It reduces CO but may
> actually increase other
> emissions, including some unregulated compounds. A
Depends on the engine, how it's set up and tuned!!
>
> (
http://carbon.cudenver.edu/~landerso/97rp13905.htm)
>
> Ethanol sounds like a good renewable fuel, but its
> production requires
> considerable petroleum fuel and petrochemical
It may be done that way but doesn't have to as
farmers are now finding out making their own
fertilizer, fuels at much lower costs. They are
removing themselves from the big agro business, big
oil and become fuel makers themselves.
> fertilizer input. Estimates
You've been listening to the propaganda machine
again. Professor Pimental(wrong spelling?), the one
who says EV are an eviromental menace is the same one
who did the 'studies' that 'proved' this. Of course he
gets most of his money/ grants from the oil, auto
industry!!
If you look at it closely, after you make the
ethanol, the dried mash is a better animal feed from
as it's predigested, higher protein from the yeast
than it was before it was made into ethanol!!
So since it is still just as good animal feed
which is what 95% of corn is used for, it takes no
food out of the system.
So you get .5lb of corn oil which can be used as
biodiesel, 2.8gal of ethanol, 1 bushel of dried mash
for animal feed and this doesn't count the corn stalk
that can also feed animals from 1 bushel of corn.
This makes the ethanol feedstock basicly free as
the byproducts pay for it thus the cost of ethanol is
the cost of processing it, about $.30-40/gal +
profit!!
In the future, it's been found out the corn stalks
have as much sugar as the seeds do and what the Inca's
actually used corn for, it's stalk sugar to make
beer!!! The corn ears are a recent breeding
improvement. The very little corn ears you see in
gormet salads, ect about 2" high are what the first
corn was, still is in the wilds of Mexico!!
And the fiber parts as almost any biomass can be
made into syn gas, H2 and CO that a much cleaner
gasoline, diesel and many other chemicals are made
from. The Nazi's used a similar process, F/T, with
coal but as biomass doesn't have sulfur, other
impurities, it is even better than coal.
So please, ethanol is completely economic, ADM is
just taking us for a ride. Check out their profit
margin on this!
For something so uneconomic, why are they doubling
the amount of ethanol made each year? Do investors,
companies want to go bankrupt? I don't think so. It's
a proven money maker now.
>
> I might also point out that once consumption of
> feedstock for fuels extends
> beyond farm surplus, we are into the realm in which
> fueling vehicles can
> literally take food out of mouths. Of course
Another lie they are feeding you. See above on
ethanol and it's about the same for other plants.
Most of our farm land has been abandoned so much of
it could be reopenned and the farm belt revitalized if
we were to go to a more farm based fuel supply.
Farm based fuels could supply 15%, oil sands, tars,
reg oil supply 25%, EV supply 30% and conservation
supply 30% is a long term solution to our energy,
transportation problems.
Electricity can come from NG, wind, hydro, non dam
hydro, Nuke, biomass, solar thermal and hopefully
lower cost solar cells.
Coal should be used as little as possible because
of radioactive, mercury, other heavy metals, NOx,
other emissions. Google radioactive coal emissions for
a real eye opener.
My non dam hydro, basicly windgens under water
with very small turbines, can when fully developed
supply all the EV electicity needs with some to spare
from our rivers, tidal sources moving at 2mph or
faster!!
> alcohol can be produced from
> petroleum, but then you're right back where you
> started from.
No need.
>
> This is all I'm going to say on this matter. This
> discussion is threatening
> to wander off topic and is generating too much
> acrimony.
I'll just have to prove what I'm saying and will
over the next yr.
EV's are the furure as straight EV's or as batt
dominated plug in hybrids and we need to help each
other to make this happen for both our national and
economic security.
Thanks,
Jerry Dycus
>
>
> David Roden - Akron, Ohio, USA
> EV List Assistant Administrator
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