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Old 07-23-2011, 06:30 PM   #11 (permalink)
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New CNG tank setup in truck - Diesel Place : Chevrolet and GMC Diesel Truck Forums
http://www.mrsharkey.com/lpg.htm

I thought every one that was a diesel modder knew of propane/natural gas fumigation.

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Old 07-23-2011, 07:42 PM   #12 (permalink)
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Old 07-23-2011, 08:01 PM   #13 (permalink)
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Old 07-23-2011, 09:05 PM   #14 (permalink)
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...when ALL the energy contents per volume are accounted for (assuming constant volume, of course) it comes down to effective proportions of BTU content of all the fuels. Look up Gasoline Gallon Equivalent on GOOGLE.

...I've always associated ether with "starter fluid" for cold diesel earthmoving equipment, but, yeah, it'll "burn" too.

...NOX supplies additional oxygen, which helps combustion and HP output, but not MPG!
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Old 07-24-2011, 04:17 AM   #15 (permalink)
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Quote:
Originally Posted by Old Tele man View Post
...when ALL the energy contents per volume are accounted for (assuming constant volume, of course) it comes down to effective proportions of BTU content of all the fuels.
The good part is you win on total BTU, so the diesel is also used more efficiently.

It's this sort of benefits the HHO-crowd is screaming about, but can't realize as they have to produce their own H2.


Of course, going CNG all the way is better than diesel, but adding it to diesel is apparently more easily accepted in the transport world. The bi-fuel trucks will still run on diesel alone.
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Old 07-24-2011, 04:41 AM   #16 (permalink)
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Originally Posted by euromodder View Post
The good part is you win on total BTU, so the diesel is also used more efficiently.

It's this sort of benefits the HHO-crowd is screaming about, but can't realize as they have to produce their own H2.


Of course, going CNG all the way is better than diesel, but adding it to diesel is apparently more easily accepted in the transport world. The bi-fuel trucks will still run on diesel alone.
If we could get the same mpg or better, and the infrastructure was in place, we would use CNG. One less major overhaul to have. Heck, we could probably get 3 million or more miles out of an engine, save incredible amounts of money on oil changes, pollute way less, which means we won't get sick as much, not to mention the lower cost and domestic reserves which require no overseas supply. We have so much natural gas it's ridiculous.

OOPS, shoot, that's why we don't have straight CNG trucks now.
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Old 07-24-2011, 05:54 AM   #17 (permalink)
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...maybe the French should come up with a "Champagne" fuel, ie: "Bubbly-Gasohol" that has CNG 'bubbles' pumped into it?

...it could be labelled Super-Magnum (93), Magnum (91), Bubbly (89), and Spritz (87).

Last edited by gone-ot; 07-24-2011 at 09:28 AM..
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Old 07-24-2011, 07:17 AM   #18 (permalink)
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Originally Posted by euromodder View Post
The good part is you win on total BTU, so the diesel is also used more efficiently.
Can you provide supporting links pls. The ones oil pan posted seem to be broken (in that they contain erroneous/conflicting information)
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Old 07-24-2011, 12:38 PM   #19 (permalink)
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We have so much natural gas it's ridiculous.

No, we don't. What's usable and what isn't are in contention, and subject to misinterpretation. There's NG that we'll not ever be able to afford as the EROI is so out of whack with reality.

Propane is the better addition to a diesel for several reasons (with the way things are). One, it can be found all over the US. Second, it's a cheaper conversion. Third, it can be used for quite a few appliances for heating and cooking that a truck provides a portable fuel source for (and NG is not easily usable in the same way).

Propane -- again, in a truck -- may provide some additional range for the more valuable store of diesel, and, IMO, it's more important to think of the work value of goods transportation for ones family. A margin enhancer.
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Old 07-24-2011, 02:31 PM   #20 (permalink)
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CNG is cheaper to use but the start up cost is high and its difficult to store a lot of CNG on a car or truck.
I wouldn't mind running propane again but I think my compression ratio with turbo is too high, if I did use propane I would only be able to use it in say the 2-6 psi of boost range.
I have considered running water methanol at lower boost.

I think I would be better off running water methanol since it would enhance the temperature differential between both the hot and cold reservoirs. The evaporation of the water methanol makes part of the cold reservoir cooler, then when the diesel is injected and lights off the methanol, both burn off and help make the hot side hotter.

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