JO, probably just because the boiler is to small. 13 kW, but I thing he will not even do that. With a few days practice is runs great now. Bigger logs do fine but take longer to burn. So even less output. Anyway, very happy with it. Bought it for 250€/$, and was used one season. Maybe a lambda check will do even better, maybe. Burning smokeless now. Very sensitive for bridging. It smokes like an old coal furness. Learning curve is over the top now.
Wanted this done four months ago, such is life. It’s my new World Headquarters. Since I do not get around as well as I did I needed to adapt. It will be nice to have a place to work again. Had three sheets of roofing but needed four and a half. And no going to the building store. Just have to find some scraps laying around.
That’s a good little engine.
I think its an anti-chamber/per-combustion chamber type.
That means very good at burning gummy veg oil.
I have talked to people that say if you feed them a bit of propane it will further improve the burn and reduce soot deposits inside.
Probably the same would happen with gengas.
Well, that is good news! Anti chamber means direct injection?
I harvested some small barrels for a simple fire so hope to show something in the (far) future. I am not as fast as some other guys here.
Kubota probably has a vortex pre-chamber system that was also the most widespread in engines.
Years ago, I tested the addition of LPG on a Ford 1.8 diesel engine and it turned out great, the LPG ratio should not exceed 20%, it improves combustion, cleaner exhaust, better torque.
Yesterday, however, I tested adding wood gas to an old Deutz engine, wood gas: air ratio to be somewhere 1: 2 and a limited amount of diesel at 30% of full, … torque similar to 100% diesel injection. … I think this will be a very useful thing
Ha ha. Hoped that you replied. You are one of the fast guys. Did not see your pictures of the motor on a laptop yet. Phone is to small for a good look. I think my Lister is direct injection. Kubota I dont know but going to test anyway. Very nice that you had good results. Cant wait to see more.
Most of the small Kubota engines I am familiar with use some kind of anti-chamber design. I think its for emissions reasons.
The important take away is if you look at the previous post in this thread you see the shape of the chamber and how it is connected to the main chamber.
This offset ball the injector fires into has gasses swirling around extremely fast and violently mixing.
The Direct injection engines tend to have a little better thermal efficiency because you have less surfaces to sink heat.
Any internal combustion engine is all about heating gasses to increase pressure and expand those gasses to make work.
We can increase thermal efficiency by increasing this expansion effect ( higher compression works to a point ).
We can run the engine hotter to reduce the amount of heat soaked away into the engine’s cooling systems ( less temperature differential )
Or we can design an engine with a minimum amount of cool surfaces like the Direct injection method.
DI has in the past shown itself to be a little more efficient but sootier and dirty in operation.
If its one of the FL 912 family an air cooled anti-chamber diesel I want to warn you about a couple of things ( I know a little about this very clean for its era engine ).
Those Duets don;t like to run cold and tend to glaze the cylinder if you do not load them down to work them.
They might wet stack and run cool in cooler climates at light load.
If you run it cold running moist wood gas that might cause you trouble.
Conversely if you run it too hot and are not running enough fuel through the injector you might boil and cook the fuel in the tip and damage the injectors.
Injectors for a lot of the Bosch systems can be bought online from MICO a division of Bosch from Asia for a hell of a lot less money.
KOEL of India is good example they still make a clone of the 912 and use MICO fuel system parts so you can repair a 912 for a lot less money of you shop smart.
This is only a guess on my part.
But I would bet this Ebay seller is using aftermarket ( even cheaper ) or MICO parts.
Seems to me if you swap the first digit from a Bosch number from 0 to 9 it directly converts to a MICO number ( not sure about that without some research)
There is still some snow in the shaded areas of the of the northland.
The run off is more or less done too…
My mind is turning to growing a few vegetables this summer.
Looks like it will be long summer around the house anyways.
In my morning reads today I learned of this fellow and I thought I would share his story about the worlds largest private seed collection and how he shares them to preserve.
What an interesting person to listen to.
“If there is something called a free lunch its a productive hardwood forest”
This quote sticks in my mind because he is talking a lot of about using trees to build soil and provide fodder food for people directly.
An interesting talk about efficient use of land.
Ugg. Already been stump hole filling hoeing. Then early garden. prep deep shovel spading. Now yesterday today first season yards mowing
I tired sore, you bet. Tan darkening takes a bit longer. S.U.
So I got this Dump Truck in a day ago for restoration work on the dump bed. Im going to use this project to launch a new company, for industrial equipment repair / restoration, custom metal fabrication, specialized machine design and manufacturing and custom automation. Custom specialized automated machinery is where I come from and now I have advanced programming under my belt that pretty completes my skill set to build machinery form concept to turnkey products.
So next week Ill start cutting off the cancer on this thing, then straighten out the existing metal and get all the surface rust off. Then Ill start CNC cutting all the replacement metal and metal glue it on.
