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Opposed-Piston Engines; Making Old Technology New Photo Gallery
Making Old Technology New
John Lehenbauer –
Nov 14, 2018
Photo 1/5 | Opposed Piston Engines 1
Photo 2/5 | Opposed Piston Engines 1 | This cutaway of one of the most famous opposed-piston engines, a Junkers Jumo 207, clearly shows how the two pistons move toward each other in a cylinder to compress fuel and air. The gears that connect the upper and lower crankshafts can be seen on the front of the engine (left side of photo).
Photo 3/5 | Opposed Piston Engines 2 | The illustration of the Oechelhauser two-cycle opposed-piston engine shows how it only used one crank and connecting rods to move two opposing pistons. The Oechelhauser was a large, horizontal industrial engine.
Photo 4/5 | Opposed Piston Engines 3 | The Gobron-Brillie was much smaller than the Oechelhauser but used a similar single-crank design. A Gorbron-Brillie opposed-piston engine mounted in a car set a “World’s Speed Record” of more than 100 mph (on-the-fly kilometer) in 1904.
Photo 5/5 | Opposed Piston Engines 4 | The picture shows a side view of 2.7L Achates Power opposed-piston gasoline compression-ignition engine that was tested in a Ford F-150 and achieved a combined fuel economy of 37 mpg. The engine makes 270 hp and 480 lb-ft of torque.