Natural gas for diesel engine????
Natural gas for diesel engine????
(OP)
May be yuo can help me to get information wher can I bay HPDI of natural gas for truck whis diesel engine?!!!
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Natural gas for diesel engine????
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RE: Natural gas for diesel engine????
I built some DI cng parts a decade ago using solenoids... Forget solenoids, the turndown is inadequate and closing bounce is another issue aside from tip coking due to aerosols and fuel with >-50 dew point fuel.
The best path is using magnetostrictive actuated common rail and constant temp glow plugs.
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
As for HPDI, the best known system on the open market out there is installed on the Cummins Westport ISX.
RE: Natural gas for diesel engine????
Have you tested to see what species are present in your natural gas? Some natural gas wells produce gas with high sulfur content. The sulfur would be an issue for engine catalysts and maybe some other components.
Honda is selectively marketing a CNG car for the California market in the US.
The drivers rent a fuel compression system called PHIL for 30 to 80 US dollars per month. I don't know what the purchase price of the PHIL system would be.
j2bprometheus@aol.com
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
Franz
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RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
Some business in the Netherlands just announced a home CNG re-fueling system (GTC Almere Pressurecontrols from Almere-The Netherlands). See these websites:
http://www.cleangas.nl/partners_of_cleangas.htm
www.pressurecontrols.com
I don't know anything more about the system.
j2bprometheus
RE: Natural gas for diesel engine????
Cummins Westport, a joint venture between Cummins and Westport, was restructured at the beginning of 2004 and is currently developing and marketing spark-ignited engines only.
For more information visit the Westport and Cummins Westport websites, www.westport.com and www.cumminswestport.com respectively.
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
Caterpillar has a businesss venture with a company that sells kits like the one you describe. The company used to be called "Clean Air Partners" (they have changed names a couple of times so I am not certain what their name is now).
NOX emissions are lower than for a typical diesel but higher than for a good spark ignition natural gas engine.
Maybe someone who owns such a system can give more info?
j2bprometheus
RE: Natural gas for diesel engine????
You lose space because of another tank.
You have to get fuel two places instead of one.
If you hotrod, you better modify the tranny or you will slip clutches.
The advantages are:
Cleaner oil.
Better range on #2.
Quieter operation.
Lower emissions.
More power.
I took my first trip today with supplemental cng. I drove 220 miles and used a bit over 10 GGE. I'm not sure how much #2 I used, it was around 1/8 tank. I need to run it alot more to get some good numbers. It appears to be giving me about the same #2 consumption as w/lp.
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
You state that you get lower emissions, what verifiable tests have you done? It appears that all the adjustments you have performed are by the seat of the pants. This is fine for establishing a baseline, but in order to provide repeatable results, you need to perform verifiable testing with a third party.
Tossing in a hydrocarbon fuel on top of a hydrocarbon fuel produces hydrocarbon emissions. Add in the fact that one of the fuels is a combustion ignition fuel with excess air and we have a NOx producer.
Please understand that I am in no way against a dual fuel application, but lets see the results on one that produces repeatable results.
Franz
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RE: Natural gas for diesel engine????
You are right, I haven't actually done any emission testing. I am basing some of my statements on what I have observed, and some on what results others have seen. The engine only runs about half the boost while adding a gaseous fuel that it runs while on #2. I theorize that this is because more (or all) of the available O2 is being consumed rather than just what is needed to burn the #2. This means that much less air is being pumped through the engine for the same power output. One look at the oil will tell you that the combustion has to be cleaner than the average diesel. I use a bypass filter and have never changed the oil, I get it analyzed periodically. It now has 48K on it and the last analysis showed only a trace of soot. I have run lp, lots of it, since the truck had 400 miles on it. I have used at least 1 gal of lp to 1 gal of #2 since the beginning, and for the last 20K miles it has been at least 2 gal lp to 1 gal #2. I look forward to some more miles with the cng, but don't plan to use it long term. Today I raised the output of the high pressure regulator from 150 to 200 psi, and the first stage of the low pressure reg from 1.5 to 3 psi. We'll see what the next roadtrip gives me for mileage. I wish I had better ways to quantify things, but I have to work with what I've got.
RE: Natural gas for diesel engine????
RE: Natural gas for diesel engine????
So what.
What is your intended contribution to this forum to date, or in the near future?
Regards
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RE: Natural gas for diesel engine????
Yep, doesnt cost me a penny.
You wouldnt be any way connected to the Biomass experts?
Franz
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Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
RE: Natural gas for diesel engine????
almost no rebuild needed for fuel system. a easy injection system just before inatke and piggy back the system can make the diesel very cheap.
and no spark plugs needed.