[Sid Coleman]

Now this is trick!! New engine design!

http://www.engineeringtv.com/video/Opposed-Piston-Opposed-Cylinder

Need more power? Add another module, 4 cylinders, 8 pistions, 600 hp!!

Be very interesting to see how if the oil companies fight this one!!

 

[Dave Birdwell]

Not really a totally new design.... ALCO used a similar opposed piston engine back in the late 40's-early 50's to power their Diesel Locomotives. They suffered from lack of durability.

The engine shown here, I wonder how they lube the outer piston/pin/cylinder.....

 

[Les Saville]

I have a two stroke outboard, 1937 Neptune horizontal twin. The two cylinders are horizontally opposed.

 

[Cam]

I have a two stroke outboard, 1937 Neptune horizontal twin. The two cylinders are horizontally opposed.

View attachment 39610

:thumbsup:

I'm into old outboards as well, although I don't have any opposed twins (just some old OMC stuff). Dad had a Neptune 1.7 from probably the early 50s. It was manufactured by Muncie Gear Worls!

 

[Ark68SS]

I have a two stroke outboard, 1937 Neptune horizontal twin. The two cylinders are horizontally opposed.

View attachment 39610

Yeah, but it doesn't have 4 pistons.
BillL

 

[Randy 67EC]

Not really a totally new design.... ALCO used a similar opposed piston engine back in the late 40's-early 50's to power their Diesel Locomotives. They suffered from lack of durability.

The engine shown here, I wonder how they lube the outer piston/pin/cylinder.....

Fairbanks-Morse used the opposed piston design (two crankshafts) in WW2 submarines and in quite a few locomotives as well.
http://farm3.static.flickr.com/2651/3968389426_2df9eb8f18.jpg

I don't know if the engine in the OP is going to revolutionize engines or not, time will tell. Seems like reciprocating weight would be higher than regular engines.

 

[Jblack]

Yeah there really isn't any more "new" engine designs out there. Most new things you see now were developed a long time ago, but weren't able to be mass produced because technology at the time wasn't able to support it. Like I've always said the wheel was evented a long time ago, we just keep trying to make it rounder!!! It still comes down to converting one type of engery into another. You can only get so much heat out of a unit of fuel and it it's only going to do so much work. Ther is no magic internal combustion engine design really.

 

[matt's66]

There were a few "hit or miss" big flywheel engines in the 20's and 30's that had a similar design. I think even some steam locomotives incorporated something similar.

 

[Sid Coleman]

OK, well it guess it's not "New". But a neat new approach to the method. I too wondered how the outboard end gets it oil supply, and the return path.

 

[rbwjr325]

In an aircraft? Not me brother,,,Whos gonna hang outside and squirt oil on those outer rods.

 

[cessnarob]

In the Navy I worked a lot on Fairbanks and Morse Diesel engines...D 8 1/8 to be exact..it was what we had on board our submarines...12 cylinders 24 pistons..Awesome engine..here is a link!! http://www.tugboatenthusiastsociety.org/Pages/tugmach-diesel-modern-FM.htm

 

[Dave Birdwell]

Thats right, I messed up... I thought it was ALCO that used the OP engine, it was F-M.

ALCO used another diesel engine that had a tendancy to smoke quite heavily, the RR crews dubbed them honorary steam engines...

 

[Chris R]

With todays technology. They could possibly make these engines reliable but I dont know about practical though.

 

[cessnarob]

With todays technology. They could possibly make these engines reliable but I dont know about practical though.

I agree, Two crankshafts?? Seems a bit much on the rotating mass..Heck, look at the horsepower the engine manufacturers are making in our pickup diesels today..And still get a fair fuel mileage..:yes: