This PDF is by Gus Wright
I don't recall if it has been posted of not.
But there is a good deal of info here that may help someone.


Well I can't seem to upload this file.


Sean

 

Man I had my hopes high to see some good info LOL

no worries

 

I think that the file is too large to upload.
PM me and I can send you a copy.

Sean

 

Ok I found some good links to that PDF I was talking about.

This one is the file I have that I could not post.
Hydraulically Actuated Electronic Unit Injector (HEUI) Systems - Injector

Sean

This link will download the file for you to your computer
http://www.google.com/url?sa=t&rct=j...61190604,d.aWc

This is a alink to a place where you can download it also
Hydraulically Actuated Electronic Unit Injector (HEUI) Systems PDF Download | 4.96 MB - 78 Pages
All types on really good info at this link. You can view online but
have to have a paid account to download.
They have a decent search tool if you want to use it.
heui - Free Online eBook Collection

The home page for above
PDF, DOC, PPT, eBook Search Engine.

 

a few interesting things I saw as I was reading it:

Marriage of emissions, fuel economy and power. Usually to add emissions you loose the other two.

Camless intake and exhaust in the future... that would be awesome! Imiagine the programming possibilities. I mean back in the day I would put in a "racing" cam or "RV" cam depending on my needs/desires.

Just cool -
"A 275 cid 4.5L V-6 version of the 6.0L/VT-365 V-8 engine is also in production and used in military vehicles and in medium duty, class 4-5, cab-over CF series chassis."

I know we have notices Oil levels grow but there is know way for us to realistically check fuel for oil. -
"Techtip
High pressure oil, in excess of 2,000 psi is separated from the fuel circulating in the cylinder head by an “O”-ring. Deteriorated or leaking injector “O”rings can result in high engine oil consumption evidenced by oil in the fuel tank."

interesting -
"Techtip
Oil quality is critical to effective HEUI operation. Antifoaming additives are needed to HEUI engines to prevent air bubbles from forming and staying in the oil. If oil does contain air created as oil is thrown off the crankshaft and other moving parts injection pressurization and timing are affected. Poor fuel economy, low power and stalling are typical operator complaints."


All in all it was a good read, I mostly skimmed it tonight but I will go back and read it thoroughly. In this pass I learned quite a bit and even found my self asking question out-loud.

Thanks Sean for sharing
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You know what I am going to say next would be a bitch of an engineering nightmare.
I would like to see that the injector system oil be a separate system from the
engine oil system. That way it could be run on it's own hydraulic oil and then
maybe we could get away from some of the fuel/oil contamination issues.
But that would require more along the lines of hard plumbing and each injector
would then have to have an oil return line.

Sean