Power and Smoke?

hippie said:
Of course, alternate fuels won't hurt either. Use GTL fuel (synthesized from natural gas). It contains no sulphur. It has much greater molecular uniformity, excellent lubricity and cetane rating of 70 or better. It might even work better at high RPM (greater than 6000). And I don't see why 87 octane pump gasoline or ethanol or methanol couldn't be used in a common rail compression ignition engine (while using lubricity enhancers, of course); if the charge air is hot enough to ignite diesel fuel, it should be hot enough to ignite alcohol or gasoline.

In summary, heat the fuel to the optimal temperature. Cool the charge air to the optimal temperature. Precisely control fuel injection so as to achieve and maintain optimal (or maximal, as desired) cylinder pressure. Redesign electronic injectors to employ more than one spray pattern. Use alternate fuels that evaporate and burn better.

quote]


So, you're saying we need to crack the fuel? Or, the numbers need to be moved around a bit like C10, H18 or something even lower?


......I still don't understand why we here in the US don't just cut Diesel and have 20% Bio. 144,000 BTU's Vs~ 135,000 BTU's? Just guessing here.


Without beaking out the S&P orbital chart, what electron are we trying to capture? It would be far more easy and better for everyone if the fuel were changed for the better. Heck, if they could just find a better way to remove the sulfur without removing the lubricity.:doh:
Click to expand...
 
Smokem said:
I believe that the Common Rail injection will be a strong contender in the future if the control systems can be manipulated directly. P-pumps make big hp because of the massive quantity of fuel they can supply, but in most high hp applications there is a decrease in pressure with larger lines to increase volume at high RPM levels. I believe that a single modified CP3 with increased gear speed will dominate in the near future, this coupled with complete engine control and larger rails would allow for large volume of fuel delivered without losing pressure. I am unsure if it will be possible to build a completely "clean" high hp diesel motor, but the new injection systems will help dramatically. It will take more research into a better fuel to get the motors at this level to burn more efficiently. Maybe adding an agent equivalent to acetone such as stated earlier, coupled with a lubricity agent and cetane booster would would lighten the molecular bond of the fuel to allow for quicker more complete atomization of the fuel.
Click to expand...

Wrong, increased gear speed is the easy way to get more fuel flowing but the pump will not last long. It is not designed for that, its a disaster waiting to happen.
 
Smokem said:
The 2001 truck I am experimenting with is seeing a solid 2mpg increase, and it seems to run smoother and idle quieter than before. Also it is 22*'s here in Iowa this morning, and with the truck idling I noticed it smelled a lot like a 12v with about 17-19*'s of timing advance.
Click to expand...

Do tell...... I'd like to gain 2 MPG :woohoo:
 
Branching effects the fuel also

Octane and 1,3,5 trimethyl pentane are both C8H18 but look very differently and I think the higher branched alkane burns better.
 
Great, now we REALLY need fps burn and btu's. :doh:

I had to look this up...... Diesel fuel ranges --->C10H22 to C15H32
 
Burner said:
Great, now we REALLY need fps burn and btu's. :doh:

I had to look this up...... Diesel fuel ranges --->C10H22 to C15H32
Click to expand...

Makes sense as your alkane chain grows longer you start getting into waxes and diesel has a temp point where it starts to solidify into wax/parrafin.

For that matter why not use gas in a diesel as long as you put lubricant in it? Would gas with 2 stroke oil in it work?
 
joefarmer said:
EFILive? ...
Click to expand...

Nope. I think tweaking EFI Live is done mostly by altering parameters. That is very different from writing the real-time software that makes the controller work in the first place.

If people like McRat are actually writing software, compiling it, linking it, and flashing the new binary onto the controller, I will stand corrected.
 
Burner said:
... Do you think it's possible that ONE injector can be split two-ways?
Click to expand...

Certainly. It's only a mechanical device. Can it be made to operate reliably in the long term? There-in lies the rub, the long hours of hard work, and the hefty price for low-quantity manufacturing runs. :) It would probably be easier to produce a hybrid 24V head for the Cummins that has both internal and external injectors.
 
Dont they have all kinds of heavy oils for marine like Bunker C

I say take Ethane C2H6 knock of 4 Hydrogens and make C2H2 IUPAC name Ethyne, common name Acetelyne. Screw that sissy butane injection run some acetylene in with maybe 40% oxygen. i bet you could hit 40 mpg at 50 mph
 
Burner said:
Oh my...... you want to melt the engine? And your emmssions, a little out of kilter. LOL
Click to expand...

Heat is the thing right? Whole reason that piston is forced down is heat expanding the gas. You can make more pressure in the combustion chamber by more heat or you can ram more air in by making it colder, ie Nitrous. You have limits in that there is only so much pressure you can make and so much heat before stuff starts melting
 
So, if we look at something closer to Kerosene we could chop more of the smoke and have a slightly faster burn rate. (The fuel BTU would drop but I do not think it would matter because most all of the fuel would be surrounded with Oxygen and ignite.) Kerosene has a lower vapor point/flash point, ect.

The pressure should be a little better thoughout the combustion process, right? :confused:




Then again, might just want to raise the injection pressure to 40+ psi and MAKE the Diesel fuel shatter on the event.
 
hippie said:
Certainly. It's only a mechanical device. Can it be made to operate reliably in the long term? There-in lies the rub, the long hours of hard work, and the hefty price for low-quantity manufacturing runs. :) It would probably be easier to produce a hybrid 24V head for the Cummins that has both internal and external injectors.
Click to expand...

It's along those lines that I am thinking, maybe a "hemi" styled head with the injectors coming in at angles with specifically cut tips to make the spray pattern go where you want it?
 
or make it kind'a like an old 2-Stroke with an injector waayyy down low. Dang, that sure would make for some funky pistons.




I wonder if the Wankel motor would work with this fuel?
 
Burner said:
I wonder if Marine Diesel is thicker than #2? Ponder, ya got a chain on that?
Click to expand...

Here marine diesel is offroad/home heating oil, comes from the same place & gets deliver by the same truck.
 
:eek: Holly snaps that's thick! C20 H42.......dang. I wonder if they do that for fire protection or because the motors are just that huge?
 
You must log in or register to reply here.
Back
Top