Video of Ellwe Diesel? Running

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Jul 2, 2021
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MidSouth, USA
I would really like to build a model of this engine.

I am not sure really what I am looking at, but it would appear to be a diesel ?

Massive flywheel running very true, and very good low speed idle.

I would put one of these in a boat for sure.

This is what I consider a very serious "workhorse" of an engine.

This is the boat size/type I would really like to have.

Not too big, but big enough to take some serious water.
I think it is 21 feet long.

And oh that 1-cylinder diesel sound.

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This appears to be a section of the Ellwe (from the website listed above).

I am gussing "Ellwe" is the manufacturer's name, and does not necessarily refer to this engine only.

Looks to me like a signature 2-stroke contoured piston top, and if I am interpreting the language correctly, it does not have a blower like some 2-stroke diesels such as the Detroit Diesel 71 Series.

So would the large exhaust chamber be to assist in the 2-stroke air flow? such as the tuned pipe on a motorcycle 2-stroke.

The marine gasoline 2-strokes have never been my favorite, since they are noisy, create a lot of smoke, and don't seem to run or idle well in the videos I have seen. I think once you get a 2-stroke gasoline marine engine running, it will run ok, but its not my idea of a good engine design.

The marine diesel 2-stroke on the other hand seems to start and run flawlessly, and idles very slowly, no doubt much due to the massive flywhee.
I like marine engines in general, and I could live with a 2-stroke diesel marine engine, since it runs so well.

Translated from a website:

Swedish Machine Works

Advertising from 1920 AB Svenska Maskinverken, often abbreviated Maskinverken, an association formed in 1917 on the initiative of the engineers Frank Hirsch and Johan Ekelöf of mainly three major Swedish machine shops, AB Frank Hirsch's machines, AB Södertelge Verkstäder and Söderhamns Nya verkstads AB.

Later, August Westmans verkstads AB in Östersund also joined the company, at the same time it became the owner of some other smaller mechanical workshops, such as AB Norrtälje united workshops and AB Verktygsfabriken Svea in Sundbyberg.

History Sign on the Untraverket dam. In 1897, Hirsch started a machine shop and mechanical workshop in Stockholm, which from the beginning specialized in work machines, especially turret lathes.
The business was reorganized in 1913 as AB Frank Hirschs Maskiner and in 1917 employed around 400 people at its workshops in Liljeholmen.

After the amalgamation, the machine works mainly produced iron and metal working machines, especially all kinds of lathes, automatic machines, ammunition presses, machines for the manufacture of tin packaging, all kinds of machines for sawmills, for planing mills and for transport devices, all kinds of wood chewers and machines for the production of firewood, steam boilers, "Ellwe "crude oil engines, railway carriages, railway signals, tools, steel castings and iron castings.

August Westmans verkstads AB had been established in 1910 by engineer August Westman and from the beginning specialized in planing machines and smaller sawmill machines as well as iron castings. In 1917, the workshop employed around 75 people.
The workshops in Södertälje were modernized and expanded in 1917-19. When the company went bankrupt in 1921, the interested banks, Skandinaviska Kredit AB and Stockholms Enskilda Bank, formed a new company, which took over the business.
The production, which previously took place in Östersund and Liljeholmen, was moved to Södertälje, where the head office was also moved from Stockholm.

The manufacture of certain machine tools and of railway signals was discontinued, while operations in Söderhamn continued as before until 1941, when it was spun off as a separate company, Söderhamns Verkstäder AB. In 1956, Bolinders Fabriks AB in Kallhäll, which was formed in 1932 by splitting Bolinders, was purchased.
Svenska Maskinverken's production, which then mainly consisted of heating boilers and was located in Södertälje, Jönköping and Kolsva, was then moved to Kallhäll. The business continued there until 1979, when, after several changes of ownership, it was taken over by Götaverken Ångteknik AB, which was part of Svenska Varv AB, and moved to Gothenburg.

The old industrial area was relatively unchanged for many years, but in the late 2000s it began to be rebuilt into offices and homes by the construction company JM, which is marketed under the name Bolinders strand.


It seems like a version of this engine has been created and perhaps kitted by Emidio Gattafoni.

Its a little had to navigate the language, but that is what it seems like to me.

Not exactly like the engine in the first post (ie: solid flyweel, no spokes), but appears to be close in many respects.
I guess the marine version would have a smaller solid and more compact flywheel, and the stationary non-marine version would have a larger spoked flywheel.
The advantage to building an "Ellwe" style diesel engine would be the simplicity of the design, ie: no camshaft, no timing gears, no pushroods, no rocker arms, no valves or seats, etc.

Building this style of 2-stroke would save a lot of time, both building time and design time, so that makes the Ellwe a very appealing engine design as far as using it for a prospective model design/build.

As I study and learn more about diesels, it becomes apparent that one must become a master of pumps/injectors, else the engine is not going to work correctly.

I have always understood carburetors on gasoline engines, and gasoline engines can be made to run just by spraying WD40 into the intake, even if the carburetor is completely clogged, as long as there is a little bit of compression, and as long as the ignition system is working.

Diesels rely on high compression for ignition, and so good compression is a must with a diesel, as well as an injection system that is working sufficiently well for the engine to run.
I recall my dad using starter fluid on his Detroit Diesel 671 when he would get into the higher hours of operation, and the compression would start to get on the low side.

I am not quite sure of the function of the two eccentrics; obviously one eccentric operates the fuel pump, but what does the 2nd eccentric do?

I can't even figure out where the intake is on this engine.
Does the air enter through the crankcase? or go through the cylinder sleeve perhaps?

Diesels seem to have much more variation in their design than gasoline engines, or perhaps I just understand the various pieces of a gasoline engine better.

And what is the lever on the upper right side of the cylinder head?

I can't even figure out where the intake is on this engine.
Does the air enter through the crankcase? or go through the cylinder sleeve perhaps?

Diesels seem to have much more variation in their design than gasoline engines, or perhaps I just understand the various pieces of a gasoline engine better.

And what is the lever on the upper right side of the cylinder head?

View attachment 144755
from what i could see, the piston is within the *sealed* crank case ( packings around the crosshead
shaft). it draws on the upstroke, and compresses on the downstroke, sending air into the intake port
under pressure (it has a reed valve). exactly like a motorcycle 2-stock. the sealed crankcase is
a clever way to avoid a blower!