New way of injecting

tater_thrower76

tater_thrower76

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i was talking to a couple people that have worked for cummins and one of them said they are working on a new injectors that spray 6 times in one intake stroke i guess you would say.... that way the fuel is burns cleaner? i j/ wanted to see what all compD thinks about it...
 
Injecting 6 times in one combustion event isn't that unheard of, but injecting in the intake stroke is a pretty interesting idea.

6.7's are up to 5 times in one injection event, aren't they?
 
I think your right the 6.7s are up to like 5 along with the new dmaxs and maybe even the 6.4 I'm pretty sure.
 
Wow, CR injectors are already expensive and delicate enough...

Let's make them wear out faster...
 
Did anyone read the thing about the new green injectors something like 160,000psi and no pump the injector does all the work...

Ill have look for it I think it was in diesel world or diesel power a few months ago.
 
Ford (6.4) = Piezo Injectors

Piezo = 7 times per event right now
 
looks promising

:: Green Diesel ::

A hydraulically operated, super-high pressure diesel injector, installed in place of the standard injector, that produces 30% higher pressure, consumes 30% less fuel, and reduces pollution. It is expected to retail for ~ $1000.

Ron Kukler: "A 2-stage hydraulic/electronic fuel delivery system creates extremely high injection pressures of 160,000 psi compared to about 23,000 psi for traditional coon rail injection systems. Fuel-injected at higher pressure results in a much cleaner combustion process and a multitude of benefits evident in the much-improved engine performance figures".

The system has been tested for durability by Prof. Eric Milkins (Dept. Mechanical Engineering, Melbourne University) for over 10,000 hours.

From http://www.greendieselcorp.com: "Existing diesel common rail systems cost approx. 25% of engine cost. Green Diesel's fuel system costs approx. 3% of engine cost. We do not use a complicated and expensive high pressure pump, and our electrics are simple.
 
pretty neat

0905dp_02_z+green_diesel_corp_fuel_injectors+green_diesel_fuel_injection_system.jpg]


They say they already have converted a 6.6L Duramax and the detroit 60 pictured above. Their data is showing lower than stock cylinder pressure on their test engines. You can run these in gas engines too. They use a short low pressure injection event followed by a very high pressure injection event. The level of atomization achieved means that these can be run on a piston that isn't bowled.

This is all new to me, but I'm interested. I'm going to mail their contact in Kentucky.
 
I dont like the idea of having fuel pressure up that high i mean 160000psi, liquids start to compress at i think 52000 psi (could be wrong), the realibity of the injectors is not goin to be very good with that kind of pressure.
 
looks similare to the old celect series cummins and the N14, where the injectors fire off of a cam lobe!

yes, the new injection cycle is called pilot injection (I think), and the common rail's do it also!
 
That would play hell on folks trying to get more performance. Swapping cams for more duration and timing.....what a bish.

I do wonder, with all this new surface area how much power the engines produce? The economy has got to be good but what about the exhaust gases? Will this new system be clean enough to avoid emissions?
 
CTD common rail injectors - even in the BlueTec engines - only have 3 separate injection cycles per combustion event... the "extra" injection events are merely extensions of the existing pulses. Of course, the effect approximates that of a discrete event.

The Bosch CR injectors are simply not mechanically capable of pulsing more rapidly - but piezo injectors are... that's why they're already firing ~ twice as often per stroke.
 
I could see where EUI might be the next big wave with the technology we have right now. The 60 series Detroit, the injector plunger starts down ~30* BTDC and doesn't end until ~45* ATDC. If you can open and close the spill port fast enough that would give you all sorts of timing and fueling options. And I think they can generate just as much of not more fuel pressure than a HPCR.
 
full pull said:
Did anyone read the thing about the new green injectors something like 160,000psi and no pump the injector does all the work...

Ill have look for it I think it was in diesel world or diesel power a few months ago.
Click to expand...

Just like a unit injector in big truck engines, its a low pressure system since all the high pressure is created in the injector.
 
and you guys think we need hardend or honed tips now...LOL Just wait until we have these SOB! LOL I wonder what dirty fuel will do? I wonder how much tip there is to break? If the tip is that small and you still build anything above...ummm say 15,000 PSI, I think ya got a hole burned in your piston AND your block. I can see it getting nasty REALLY quick. ......then again, I REALLY like the Idea.
 
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