Thread: LPG Fumigation in diesels revisited

I met a man who generates Hydrogen from water, and injects that in via aircleaner [Mitsubitsi 4wd truck converted to camper]. He claimed he got about a 25% fuel savings on his trip around Australia.

So guess LPG/Ethanol will also give savings.

Originally Posted by JohnF

I met a man who generates Hydrogen from water, and injects that in via aircleaner [Mitsubitsi 4wd truck converted to camper]. He claimed he got about a 25% fuel savings on his trip around Australia.

So guess LPG/Ethanol will also give savings.

And by which method did he produce this hydrogen in large enough quantities at an economically viable price? Please don't say it was done by the vehicles alternator.



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Originally Posted by JohnF

I met a man who generates Hydrogen from water, and injects that in via aircleaner [Mitsubitsi 4wd truck converted to camper]. He claimed he got about a 25% fuel savings on his trip around Australia.

So guess LPG/Ethanol will also give savings.

Psst. Wanna buy a hiclone?? I hear they improve your horses power by lots of per cents, too.

I know a guy near me who can make you a pretty efficient H2 generator cell, as good or better than many evilbay ones... but he is'nt totally convinced of the 'savings' overall.

A modern automotive alternator (which has a differant physical layout than power generation ones) will yield around 50 to 65%. Put another way, 35 to 50% of the energy used to spin it...is 'lost'. Then there are the compromises required for the specific "car" enviroment & use.

I understand that power-house alternators can, under ideal working loads & management, give around 90+%

The Engine Room in my '95 Rangie is NOT a cool, well-ventilated open space...and heat kills diodes, regulators, brushes and ....Efficiency.

The HiClone is looking better....

Rudolf Diesel supported the idea of using a flammable gas to augment the combustion of peanut oil in his new-fangled engine...

The other thing about adding LPG etc, is the border-line between maximum added HP...and melted pistons, is pretty thin.
When I was still making Biodiesel, 15% was regarded as the highest SAFE and practical figure... allowing for equipment variation, mis-calibration etc etc.

Originally Posted by isuzurover

As far as gases go:
NOx was reduced, CO and HC/VOCs both increased significantly, opacity (and presumably PM/Soot) reduced between 0 and 10% and then increased.

I wonder how this compares to cheapo water injection?

All I know is my Tdi is running as good as ever after 4 years of LPG/Diesel injection. Pat

Hello
I have LPG on my TD5 2004 for about 3 years now, the good points are that there a is a lot more power, and revs much easier, oil stays clean longer, much better MPG, I am getting about 500ks to a 17 liter tank of LPG. The inlet is just before the turbo.
Mine comes on at 1500 rpm peaks at 2000 rpm max flow with max boost, then at 3500 rpm nothing.. It is running at 25% at max boost and at 2000 rpm. The engine runs much smoother when I have gas, so much so, my wife, knows when the LPG has run out, and she refers to it as the tractor ......

Ian

Originally Posted by isuzurover

I am at a conference and just saw an excellent study on running a commonrail diesel on either Diesel+LPG or Diesel+Ethanol

Diesel was a cummins commonrail 6cyl inline. LPG was injected pre-turbo using a commercial system. Ethanol was injected post turbo using fine nozzles.

The ecu reduced diesel and retarded injection with increasing LPG or Ethanol, to maintain torque at a constant speed.

The results showed that LPG and ethanol both behave exactly the same. Above 15-19% diesel substitution - for either fuel - significant knock starts to occur. By 35%, knock is huge and likely damaging. Below 15% everything seems OK.

Note that all measurements are taken under load - at 4 different load conditions.

As far as gases go:
NOx was reduced, CO and HC/VOCs both increased significantly, opacity (and presumably PM/Soot) reduced between 0 and 10% and then increased.

Very interesting Ben...after seeing this demonstration what's your opinion on LPG injection on our motors now?