Looking for Plans for a Small Diesel Engine

[J Tiers]

Injectors from Find Hansen's engines

http://www.craftsmanshipmuseum.com/images/Hansen9.jpg

More of his engines

http://www.craftsmanshipmuseum.com/Hansen.htm

[John Buffum]

Lovely paint jobs. Great explanations.

I'm sure if I look through back issues of Model Engine Builder, I am BOUND to find SOMETHING.

[kendall]

My experience has been that it is better to look for a 'named' model engine (IE lister etc) rather than a generic model 'diesel' engine.
Searching for a 'diesel' will provide a few links, but a 'name' will provide more even if they have different names

[Robin R]

Here's a build thread on a quarter scale Lister diesel, though there hasn't been any posts in the last couple of years.http://www.modelenginemaker.com/inde...980.0/all.html

[Willy]

I think Robin R beat me to it but I think we're on the same page.

Here's a link to a video showing George Punter's 20cc Lister 6/1 diesel engine. Probably about the size John is looking for but in all truth I don't believe it to be a novice project by any means. Not that any diesel engine would be.
Good to see though that they are out there.

A link to the video.

Also a link from Home Model Engine Machinist about a similar project.

[J Tiers]

That Lister model is sure a smoky little barsteward.... and notice the pool of liquid under the muffler. I suspect injector issues, which may be mentioned, I didn't have the sound on when I watched the video.

[Robin R]

Here is a link to a facebook page on the engine, this was linked to on the thread that Willy linked to. It appears you might have just missed the boat on being able to buy the casting patterns. https://www.facebook.com/Lister-CS-6...0681059792379/

[Willy]

That Lister model is sure a smoky little barsteward.... and notice the pool of liquid under the muffler. I suspect injector issues, which may be mentioned, I didn't have the sound on when I watched the video.

Yes indeed a smoky little thing alright, perhaps an artifact of scale as you mentioned before. Also noted the rpm level to be much high than I would have thought, another atifact of scale I would assume. This in conjunction with replicating an already very old and dirty engine design does take it's toll. Not perfect by any means but it is a direct injection diesel that has been scaled down and replicated in a home shop environment.

Having seen a Hatz 1B20, 240cc, 5HP diesel disassembled in a repair shop that could loosely be compared to a clean room in it's degree of cleanliness, and witnessing the degree of engineering, metallurgy, and precision present in an engine costing close to $2,000 I can only say I'm still impressed with the results achieved by that dirty little 20cc engine in the video.

I did not have the time to do a thorough search to find a better example, but finding this thread interesting just did a quick google in order to see what might be available. Perhaps later today or tomorrow I may find time for a more exhaustive search.

Irregardless, hopefully the OP decides to pursue his goal although I must admit it is an extremely ambitious one. Good luck John!

[Duckmang]

I noticed it was pretty smokey too, though am not surprised. I have a 10 hp yanmar clone air cooled diesel engine on my gold dredge. Its a powerful efficient engine but it is just as smokey until it warms up and runs with a load on it. Once hot under load it has no visable exhaust.

The dribble from the muffler, I'd suspect is unburned fuel. But hey just getting it running at all is an impressive feat. You could probably expend as much effort to fine tune it as it took to build it.

[J Tiers]

The key to any diesel is getting the injector right. If it doesn't atomize right, it ain't happening. The high pressure pump is probably considerably easier than the injector.

Those parts are one reason I suggested the Hvid type, because it is low pressure injection, and not so dependent on the injector. But you do need to get the small chamber correct in order that the fuel gets lit and blows out into the main chamber.

http://www.eldensengines.com/bhdatabase.pdf

http://www.eldensengines.com/homebre...ebrewhvid.html

http://www.arcticrail.com/engines/en...hvidpage0.html

[John Buffum]

Have no idea if this will be helpful or not, so sorry if its a waist of time.
If you have modelling/CAD software, maybe create your own prints from a model (if they have functioning ones) ...
https://grabcad.com/library?page=1&t...iesel%20Engine

Theres some more links in this thread:
https://forum.solidworks.com/thread/48098


_

OK. Now THAT's helpful! I have AutoCAD 2000. Maybe I can find "reader" software.

Thanks, Khan. Will check all out. This will not be a shorty project. Maybe six months.