Lpg diesel fumigation

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24th January 2008, 06:55 PM
abaddonxi

Quote:

Originally Posted by p38arover

Did you Google LPG fumigation?

The first one to come up is this home made system: LPG (Propane) Fumigation for Diesel Engines

He's not exactly a role model for safe work practices.:D

Cheers
Simon
24th January 2008, 07:03 PM
loanrangie

Quote:

Originally Posted by Hymie

My 200 Tdi has an LPG converter of a 4 cylinder car.
As it's drawing vapour-(and very little of it), from the LPG tank, it does not have to be plumbed into the cars cooling system to "warm" the gas to get the volume of vapour required to run a spark ignition engine.

Interesting, so its virtually still in a liquid state and very little vapour, have you got any pics you can post ?
24th January 2008, 07:05 PM
George130

Will be interesting to see how you go.
24th January 2008, 07:34 PM
locorr

Thanks Hymie good to know it can work if I do it right. I just hope I can get my output low enough using the fumigator I have. A mate of mine was pleased when I got my rangie because he said my fumigator was larger than the ones they use for taxi's. Some pics of your setup would be great if thats possible.
24th January 2008, 07:37 PM
Hymie

Quote:

Originally Posted by loanrangie

Interesting, so its virtually still in a liquid state and very little vapour, have you got any pics you can post ?

Not immediatley to hand, I can take some and post them tomorrow night or Saturday.
24th January 2008, 08:22 PM
Blknight.aus

Quote:

Originally Posted by locorr

Maybe a crazy idea but is it possible to use a lpg fumigator off a car for diesel fumigation. Not sure if there is enough adjustment on them to get the ratio low enough. I've read that 15 to 20% is used. I have an old 3.5 rangie on gas and a disco 300tdi. I also have a navara tdi 2.7L that I'll use for experiments, don't want to hurt the disco. I'm also in the process of building my first hydrogen from water splitter. Will attempt to use hydrogen as a catylist for the diesel.

Quote:

Originally Posted by Dougal

You're wasting your time with the hydrogen. Only big-oil conspiracy types believe that works.

LPG works but will make life very hard on your engine. Be careful.

Just to stir the pot....

I think hydrogen fumigation might just work (im always up to have a play to see if I cant get something for nothing)

given the very slight amount of gas needed to start the flame front propogation (which is essentially all fumigation is doing providing a seriously hot area for the diesel to ignite in) using electrolysis (help on spelling ron) to crack water into h2o and o2 by means of some kind of inverter and relying on the alternator to keep that up might just mean you get some kind of benifit that might just be significant enough to make it worth while.

Remember that the LPG fumigation isnt on all the time so while the system was off it could be generating and storing hydrogen ready to use when you need it most.

just a thought...
24th January 2008, 08:48 PM
Hymie

2 Attachment(s)

Attachment 6338

Attachment 6339
24th January 2008, 10:46 PM
loanrangie

Quote:

Originally Posted by Hymie

Attachment 6338

Attachment 6339

Hmm, i actually have all those same parts in the shed, where and what size bottle did you use ? Is there any coolant running thru the converter, looks like a hose opposite where you circled the inlet ?
25th January 2008, 05:10 AM
Dougal

Quote:

Originally Posted by Blknight.aus

Just to stir the pot....

I think hydrogen fumigation might just work (im always up to have a play to see if I cant get something for nothing)

given the very slight amount of gas needed to start the flame front propogation (which is essentially all fumigation is doing providing a seriously hot area for the diesel to ignite in) using electrolysis (help on spelling ron) to crack water into h2o and o2 by means of some kind of inverter and relying on the alternator to keep that up might just mean you get some kind of benifit that might just be significant enough to make it worth while.

Remember that the LPG fumigation isnt on all the time so while the system was off it could be generating and storing hydrogen ready to use when you need it most.

just a thought...

It's the speed (or rather lack of) that hydrogen can be generated that deflates those balloons. About 1 bubble per second isn't going to make any difference to a diesel engine.

Your comments on LPG fumigation are interesting, for that hot-spot to happen the LPG has to be suffering pre-ignition. Yet almost all the LPG proponents I have met swear black and blue that it doesn't ever preignite because they can't hear it.:D
25th January 2008, 05:56 AM
Blknight.aus

Just had a look at his site...... didnt even get past the first 3 paragraphs

Quote:

Propane by itself will not self-ignite inside a diesel-fuel compression-ignition engine.

really?

Quote:

Attempting to provide more gas to the engine will not increase performance, and will in fact lead to a condition not unlike pre-ignition in a gasoline engine

Then whats that about....

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