General Injector discussion
 

Please forgive me if this is long and or vague. If I put everything this thread would be looked past for to much content.

I am not out to try to Start a WAR on opinions. However; it might happen with this thread! I am just looking for guidance, and wondering if I am thinking the right way? I want to inspire out of the box thinking, without trying to reinvent the wheel (I seem to get that allot).

I want to go at it a different way. I have seen allot of injectors over the years including performance injectors, and the fuel pressures have increased, as well as injector timing. When looking back at older trucks (5.9 6bt for an example) We notice the evolution of performance injectors. First it was advance injector timing, then increase fuel pressure, followed by installing Marine injectors (after the initial intake exhaust and others, we will just considers this done throughout this post). Performance Shops discovered the weakness of the originals and started to modify accordingly. These shops and businesses are now the pioneers of diesel performance! Injector orifices were increased in size to allow more fuel (not to mention the pumps were modded to produce more fuel flow) when we start to get into black smoke that is when we are maxed out in timing, fuel pressure.

Question 1. What size are the diesel fuel droplets when atomized on a maxed out or fully modded injector?

Question 2. What size are the diesel droplets when atomized on the new power-plants?

Question 3. Does diesel get more volatile when extremely atomized?

29,000*psi (1,999 bar) high-pressure common rail Bosch fuel system on 6.7l this is the pressures that Ford is using. I do not know the pressures of the other power-plants yet. I was just trying to set up my next question. My Idea is to go another direction, fuel economy and power in an older engine. Starting with injector tips.

Question 4. How about smaller nozzles and more of them? I mean really small like half the size of a normal nozzle.

Granted we have a typical star pattern, that works well.

Question 5. How about a Cloud spray or Conical spray pattern that goes directly into the bowl, or maybe have the nozzles juxtaposition (Either against air current or with the current) in the intake swirl. I already know this is happening in stock form. just trying to squeze more efficency.

Now I am all for the performance and the search for more power. I just want to look at this in a different angle. I do not care if this Idea is put to good use, and that I do not make anything from it. (The manufacterers are already hip to this any way so no loss. That is besides the point (I cannot afford it anyway) might as well let somebody capitalize on this.

I know the basics about Injectors, I am just trying to see if anybody has the same Ideas. Granted I have no funds to actually do this experiment, nor the funds to process data to see the spray patterns that are actually happening in the combustion chamber. I do know that there are allot of shops out there that might. I would like some guidance please.

Forgive me for posting on a general subject everyone knows, I just want to make sure I am not stupid. I have over 150 new Ideas every day, some have to do with Mechanical, Software, Musical, and Marketing. I was told I would never be taken serious unless I have a degree. Well, I am almost done with my A/S will try to get my B/S. The unfortunate thing is I am late should have done this in my 20s. Now I am being told I am to old to be taken serious.
Thanks
Rustin

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Bump

Questions 1 and 2, no idea. Extremely small, that's for sure.

Question 3, heck ya it does. the more air that can get in between the fuel "droplets" the quicker, cleaner, and more efficient the burn. Even grain dust is extremely flammable when it is suspended in air.

Question 4, more holes is better for sure. Take Jammer nozzles as an example. I believe they have 6 holes, even in their 150HP nozzles. I have 7 hole, 65hp Fireball nozzles, and they burn really clean. More holes with the same total hole area will produce a finer vapor, and as answered in question 3, much better burn. The problem with more holes has to due with the pressure they are subjected to. 10 holes would burn really clean, but offer a really easy place for the injector tip to break off.

Question 5, not too sure about that one. Spray angle can change performance, but I'm not too sure how much exactly.


It's always good to be thinking, at least I think so. I get a lot of time during the day driving to think up all sorts of things. In the same situation, I don't have the means to produce any of these ideas, but sure would like to see them out there.

Congrats on your studies.

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One thing I have heard of doing is injecting diesel into the intake, before it enters the cylinder. At high pressure of course so it is atomized. I'm not too sure how much though. With the temperature increase in the cylinder during the compression stroke it may pre-combust and start knocking. If it does work, a belt driven CP3 or similar pump and a nice short injector in the intake horn would work wonders.

Thanks RA! I thought maybe something was wrong with my post. You know I talked about that very same thing of pre injecting diesel into the intake. I thought it might work in a WOT setting. That is the only way it could work. it would have to be a really fine amount and a realy short burst. I was told it wont work. it would be to advanced of fuel timing and cuase problems. Has anybody seen the heads off a LaMans Diesel Racer? I hav'nt. I have a theory that they are using prechambers, like some of the old 300d Mercades.

some good info in this thread,

https://www.dieselbombers.com/5-9l-r...injectors.html

:pca1:

I've heard of ppl injecting extra fuel into the intake of an old 6.9 ford.. Why not a cummins????

I am still reading the thread before I give a comment.