Someone please help, stranded and sick

[luvrbus]

#1 fuel or kerosene was the primary fuel for the older 2 stroke engine for years till the refiners wanted just the 1 type diesel fuel to refine.FWIW the old IH diesel engines had 2 systems you started on gasoline then switched over to diesel once the engine was warm what a nightmare they were 

[Dreadnought]

How do multi-fuel engines work?   Do they have to be adjusted to whatever fuel is chosen to work properly, or do they work so-so on anything without adjustment?   Also, can one use other diesel-like fuels in a diesel engine, such as JET-A1 or kerosene or heating oil, or do they have a similar lack of lubrication as gasoline?   Just wondering.   And no, I don't plan on putting anything except diesel in my bus!

John

I was once involved in a military project that stipulated using JP8 as a fuel. If I were tasked to engineer a HD diesel engine to run on iso-octane , gasoline/petrol, I would make sure the common rail fuel system lubrication was done using the engine oil rather than diesel itself.

I would then optimize the fuel injection system, that's the number of holes in the nozzle the,  sac volume, and spray angle for the new fuel, and then design a piston bowl ,compressionrati  o, to suit. I would pay special attension to the liquid length of penetration, and how it mixes. The work may also involve looking at the port design and the amount of imparted swirl. I would use in cylinder CFD in  league with single cylinder test work to correlate and ground the smulation
There would be extensive testing ,looking at emissions, power and torque level, and then looking at exhaust temps over the required duty cycle to make sure everything was durable. That would be most of the work.

[Gary Hatt - Publisher BCM]

We had an old dozer that ran on diesel but started on gas.  It was the neatest sounding engine when switching from gas to diesel.  We would run it on gas for a few minutes to warm it up, then pull the fuel shutoff handle and increase the diesel valve handle and it would run on gas, then gas/diesel then diesel.  Wish I had a video of it, as it was so kewl to see and watch as it blew smoke rings into the air.

[eagle19952]

Some diesel engines will work fine off of alternate fuels. I have an Arctic Cat diesel 4-wheeler that is army spec with a Lombardini diesel and it is rated to run off of anything from diesel to straight kerosene to jet A or jet B. I think it lists 7 different fuels i can use. The only downside it mentions is reduced power and increased consumption if not using regular diesel. But even this one clearly states, and I quote" Gasoline or gasoline based fuels must not be used, or sever engine damage WILL occur".
Ryan.

none of those are gasoline....

[Scott & Heather]

Coach has been running like a champ for a day and a half now. We keep stopping and filling with diesel to keep any gas remnants to a really low concentration. No hard done. Almost to Orlando


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[luvrbus]

The military used the Continental engine that used any type fuel it was called the "hypercycle" engine it used a fuel density compensator. I have one in a military generator and a 6x6 truck    

[Oonrahnjay]

...  old British diesels were often called "oil engines".

Thanks, John  ...

        Like the Leyland O-600/O-680 series???  Yeah, like that, like the one I have in my garage!

[DoubleEagle]

#1 fuel or kerosene was the primary fuel for the older 2 stroke engine for years till the refiners wanted just the 1 type diesel fuel to refine.FWIW the old IH diesel engines had 2 systems you started on gasoline then switched over to diesel once the engine was warm what a nightmare they were 

Cliff & Gary, I had one of those International engines in a twenty-ton bulldozer (TD18A). It was a nightmare in that it had many parts, but it was super cool when you switched from gas to diesel. I've never experienced anything like it since. In the case of this Scott dilemma, (how do we count them all  ), it does not apply because there were two fuel tanks, and they did not mix. On one side of the engine you had an intake manifold with a carburetor and a touchy magneto firing six spark plugs which fired in a small pre-chamber that sent it's expanding gases into the main chamber to turn the engine over. That would warm the engine up, and it had just enough power to actual move the bulldozer, but not push anything. After a few minutes of warmup, you pulled the diesel fuel valve open a little until you see smoke coming out of the twin stacks, then you pull the compression release lever suddenly to close off the pre-chamber, and then, fa-fa-boom, the diesel fuel fires under compression, and the whole machine shakes and comes to life. I always thought it would be a great training aide for beginning mechanics because it had all of the components of a gas and diesel engine in one block, with two heads.

[luvrbus]

LOL I spent many days working on TD-6's up through TD-18's IH's that is all dad would buy for years and still have nightmares even thinking about one.The lever tripped baffles like in a carburetor in the intake manifold so the engine would make vacuum to pull the gas up from the down draft carburetor those were always hanging and not tripping on the TD-9's  

[DoubleEagle]

LOL I spent many days working on TD-6's up through TD-18's IH's and still have nightmares even thinking about one

I did not have too much trouble with the engine or controls, the magneto was very touchy about delivering a good spark though. I do remember that finding replacement pre-cups was difficult. The main problem I had when working in rocky soil was the track chain cracking and busting, over and over. Getting the tracks back on was misery on rough ground. When it worked well, it would start in sub-zero temperatures and do a lot of hard pushing. It was a great exercise machine, both legs and both arms had to work the clutches and brakes.

[luvrbus]

The TD-18's sure sound good under a load with the dual mufflers though,those were only 75 draw bar hp

[Iceni John]

        Like the Leyland O-600/O-680 series???  Yeah, like that, like the one I have in my garage!

I love the sound of an O-680 pulling hard in a Leyland Leopard with the Pneumocyclic transmission  -  I rode many a mile in them between London and Norfolk.   https://www.youtube.com/watch?v=oKKKgjzKcsw   Great buses.   (Almost as good as a Bristol RE.)

John

[Oonrahnjay]

I love the sound of an O-680 pulling hard ...

       I have to say that I loved the sound of mine but after losing the Daimler transmission twice after 500 miles and having no rebuild service except in Britain (and parts becoming scarce and expensive), I felt I had to go to a N. American powertrain.  There were a couple of British buses in Charlotte NC in the '00s with Gardner engines ... just not the same.