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Old 05-01-2012, 01:38 PM   #1
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Engine fuel conversions

It's been a while--a few years--since I've had time to visit this forum. I searched and didn't see any discussion of converting engines to run on LNG/CNG/Propane. Has anyone investigated?

Best to All,

Rob
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Old 05-01-2012, 03:36 PM   #2
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see http://www.airforums.com/forums/f311...cng-88374.html
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Old 05-02-2012, 07:50 AM   #3
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Question In the future....

Clean Energy is the largest company building Natural Gas Filling Stations.

In five years it will be a much more viable option. At this time most of the conversions are being done on local fleets, buses, sanitation etc.
Home filling stations are available but expensive, 5k-10k.

Bob
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Old 05-02-2012, 08:29 AM   #4
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We had a number of fleet vehicles running on LPG and there was an obvious drop in power (I'm thinking about 20%), the LPG tanks took up a lot of space in the truck boxes and LPG was more expensive than gasoline.

We eventually phased them out. Maybe things have improved in recent years, but I would do a lot of research.
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Old 05-02-2012, 11:06 AM   #5
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The Clean Energy stations are using Liquid Natural Gas. (LNG)
The vehicle storage tanks are still the most costly segment of the change-over though.

BAF CNG conversions.

Bob
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Old 05-04-2012, 02:23 PM   #6
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Check out NashFuel and the IMPCO 425 mixer.
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Old 05-04-2012, 04:12 PM   #7
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There is no reason for propane to be more expensive than gasoline. The last time I filled my home tank 150gal is was something like $2 a gallon but since it is not as dense as gas you don't get as good milage. If the system if designed correctly, you should not loose power.

Perry
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Old 05-05-2012, 11:44 AM   #8
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Thanks all

Thanks to all who replied. My sense of this is, as said above, that it is early in the game at least in the US. I gather that having a "certified" conversion done is expensive, and may be limited by law to some new vehicles--at least older classic vehicles appear to be few and far between as conversions, perhaps relegated to eye candy for their advertising and "gee-whiz" value.

I am not sure that I want to be the first on my block to run the zepplin on an alternative fuel, but there are enough long haul trucks being built to run on NG (in its various forms) to think that there might be a chance that much more will be done in the future. Boone Pickens, the oil investor, appears to be involved in CLNE (Clean Energy Fuels), a company which is putting fueling stations at truck stops on some interstates. At the current price of the fuel ($2-$2.50), they claim that the payback for 18 wheelers is measured in months. But at current rates of build, it will be more than a decade before NG fueling stations become anything like common beside gas and diesel pumps, and that is by no means guaranteed to happen. It is probably unlikely that any significant local, state, or federal funding will be made available to move this along at a faster rate.

That is what I think I have learned--

Best to all,

Rob
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