Diesel question

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Dan, danl, danny boy, Redbeard, actually Greybeard now - 13 Mar 2006 17:33 GMT

Hi all,
I was wondering if anyone here has has used propane injection as a
milage booster. I have little knowledge about propane injection,
other than ads and articles that proclaim tremendous milage gains. I
don't believe the milage claims but think there may be enough of an
increase to warrant a more detailed examination of propane injection.

No, I do not have a diesel at this time, but it never hurts to
research options.

Please no "It doesn't work" comments unless there has been first hand
use so you can back it up details of your experience.

Thanks for taking the time to read this and any info that may come
from it.

I've learned that I don't suffer from insanity, I enjoy it!
danl4x@charter.net
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www.outdoorfrontiers.com
www.SecretWeaponLures.com
A proud charter member of "PETAF", People for Eating Tasty Animals and Fish!!!

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SnoMan - 13 Mar 2006 21:45 GMT

In theory it is supposed to help diesel burn better but you are also
adding energy to engine as well as there is about 90k BTU's in a
gallon of propane vs about 140K in a gallon of diesel and this energy
makes the heat that drives the engine. When you consider any MPG gain
possible, you must also factor it against the added cost of propane
too. Personally, I would not bother because it will likely never pay
for itself.

>Hi all,
>I was wondering if anyone here has has used propane injection as a
[quoted text clipped - 18 lines]
>www.SecretWeaponLures.com
>A proud charter member of "PETAF", People for Eating Tasty Animals and Fish!!!

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Olaf - 17 Mar 2006 01:28 GMT

> In theory it is supposed to help diesel burn better but you are also
> adding energy to engine as well as there is about 90k BTU's in a
[quoted text clipped - 3 lines]
> too. Personally, I would not bother because it will likely never pay
> for itself.

I agree. Not only for the cost of installation and propane, but for the
sense of adding a fuel that will start burning way before TDC (which works
against your engine). It seems to me propane injection (unless it's injected
under pressure at the proper time somehow) would almost <only> serve to
ignite the diesel fuel more rapidly (since there'll be a fire in the chamber
already when the diesel fuel is injected) and let it burn more completely.
Most, if not all, of the energy gained from the propane burning after TDC
would be absorbed by the fire happening before TDC. But it probably will
make the diesel fuel burn more completely.

>>Hi all,
>>I was wondering if anyone here has has used propane injection as a
[quoted text clipped - 19 lines]
>>A proud charter member of "PETAF", People for Eating Tasty Animals and
>>Fish!!!

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