Years ago I think Ingersol-Rand used this design in oilfield applications. I recall someone referring to them as submarine engines & saying they had opposed pistons.
On Fri, May 6, 2011 at 7:06 AM, J P Malone <JPMALONE@...>
Correction. OPOC stands for Opposing Piston, Opposing Cylinder.
For more search on opposing piston engine or opoc (opposing engine, opposing cylinder)
Do you have the URL?
From: J P Malone <JPMALONE@...>
Sent: Sun, April 17, 2011 1:55:01 PM
Subject: [hreg] New Engine 100 MPG
Here is the enclosure and there is a video with the german engineer to explain how it works.
Ken Ruiz was the CO of Bon Homme Richard (US aircraft carrier) in 1967 when I was Sqd CO aboard. He is a WWII hero. Read his book "Luck of the Draw" for details. Marv.
Subject: RE: New Engine 100 MPG
In WW II I was engineering officer for about two years on a submarine with 4 opposed piston Fairbanks Morse diesel engines. The Navy copied the engine from railroad engines which were well tested and reliable. They were very efficient and most important to us did not smoke and give away our position.
These are the engines that the railroads now advertise as moving a ton 500 miles on a gallon of fuel.
We used to go 1500 to 2000 miles into enemy territory and stay about two months with no support for the engines and would almost always return to port with all four still working.
I always wondered why they were not used on more land vehicles.