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#2
12-21-2013, 11:18 PM
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it's been discussed. try digging around in the performance forum, there should be some threads on it there.
I've read about nozzles piped into the intake upstream of the turbo, and some piped into the air filter box... I don't think it's wise, as the fuel is ingested to the chamber with the turbo gasses, so combustion is not timed... these motors are very high compression, so predetonation could be disastrous...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! 
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#4
12-22-2013, 12:09 AM
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I am involved in R&D to feed CNG into the diesel engines of heavy duty trucks.
It is certainly possible to run diesel engines on a mix of diesel and CNG. Our CNG injection systems are computerized and connected to the trucks engine CAN bus. Depending on the programming there can be a good power increase or fuel cost savings. It is not easy to meter CNG correctly into a pre common real or computer controlled diesel engine like a 617.
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 76 240 D. Bought in 1998 for $25. 85 300D. Got it for free with a bad engine. ( Sold ) 60 Unimog 404. What was left of it, was given to me. Now powerd by 617A. 88 560 SEL. Bought without engine and trans. Now powerd by 617A. 67 250 SE. Cuope. For resto or sale. 64 220SE. For resto.
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#5
12-22-2013, 01:54 AM
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City Disel powered Power Generating Plants have been run on Natural Gas.
Since they are big Engines and use a lot of Fuel connecting them to the Cities Gas Pipes makes a lot of sense. As stated in another post sometimes a small amount of Diesel Fuel still has to be used as a Pilot Fuel to ignite the Natural Gas. This is genreally done where the Natural Gas comes in with the intake Air. Otherwise the Natural Gas needs to be compressed and injected into the Cylinder. The above is what I was told in Tade School back in 1973. Of course technology is different now.
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84 300D, 82 Volvo 244Gl Diesel
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#6
12-22-2013, 01:03 PM
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Back in the early '70's when I started operating heavy equipment, the hot engines to use were 'detroit diesels' (we called 'em yammers, as in 2 stroke yamahas). All our excavaters (large, tracked back-hoes) had 4-71 or 6-71 detroits in them, and all had a propane injection system on the motor for cold weather starting. It was a simple holder for disposable propane bottles, same as your small BBQ. As I recall, a small line ran into the inside of the air filter housing. You turned it on and there was a starter button right there to hit, once started, you just turned off the gas, , , & started diggin'
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#7
12-22-2013, 02:51 PM
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Quote:
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'83 300D, 126K miles.
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#8
12-22-2013, 03:16 PM
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I've been running a system I called "propane fogging", using a BBQ tank with a valve with a regulator. At slightly less than 1 PSI, I say because the gauge on the valve lowest setting is 1 PSI. Anyway I have a switch in the cockpit to activate the system above idle, mostly around 45 mph I use it at this range you do not have any pre-ignition. It definitely gives extra boost for faster accel, EGT would climb at initial activation but settles as you maintain desire speed.
I even experimented with much less during idle, of course idle will increase but no pre-ignition. That was for curiosity only, I use the system mostly at higher speed as mentioned 45 mph and higher.
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1984 300D, 1972 LT1 Corvette, 2014 Artic White 3LT/Z51 C7, 2013 650i Convertible BMW, 1994 Kawasaki Vulcan, 1992 Yamaha Seca II and 1996 Dodge Ram 2500.
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#9
12-22-2013, 04:55 PM
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Quote:
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84 300D, 82 Volvo 244Gl Diesel
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#10
12-23-2013, 11:40 AM
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Quote:
WD 40 is a workable cold weather starter for diesels, it uses propane as propellant. (NEVER use ether for glow plug engines) (detroit diesels arent glow plugged, before someone tells me that already, I know)
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#11
12-22-2013, 01:08 PM
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I messed with it,It sure gives extra power.I rigged a line preturbo from camping cylinder in the cabin.Then turned it on and took off like a scared Jackrabitt.I have everything to run it as a nitrous system for my diesel,except the hobbs switch.I hope to get it going next year.As a tool for passing and once in awhile chalenge
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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt
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#13
12-23-2013, 10:19 AM
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It would be done for two reasons. One, to gain extra power by utilizing the free oxygen left over in the diesel combustion process. Two, to take advantage of a cheaper fuel (like NG) while using the diesel process as an ignition source. BNSF railroad is experimenting with LNG as a locomotive fuel added to the diesel process; savings could be 1.5 Billion per year despite the added cost of handling a cryogenic fuel.
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'83 300D, 126K miles.
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#14
12-23-2013, 07:17 PM
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Quote:
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#15
12-23-2013, 07:53 PM
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Quote:
Converting Diesel to Natural Gas - YouTube The diesel ignites the CNG or LPG going in through the intake then keep the diesel throttle fixed while increasing the gas input. It doesn't require any modification to the diesel fuel system. The gas won't ignite without some diesel fuel going into the engine.
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CENSORED due to not family friendly words 
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