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Working view of 2 Stroke Opposed piston Engine

Saw this at the Mount Gambier show and had to share. Really appreciate the interest shown so far. Some good views of rockers and scavenge blower and a look in the inlet showing the piston working as the valve plus the injector shooting into a glass jar. As a kid I remember the sharp bark these engines made at full noise. Apologies to anoraks who want to know all the details but it was hard to hear the chap at the engine because of surrounding noise. The chugging noise you can hear is the vintage Ronaldson Tippett engine which is turning this engine over slowly so you can see how it works. Further notes: It is a 2 stroke cycle which fires every revolution and uses the piston on the inlet side to open and close the port and the piston on the Exhaust side to uncover the Exhaust at the appropriate time while the blower is not to supercharge but to "scavenge" the spent gases ( basically the air blows in the inlet and out the Exhaust at a slight pressure) For those interested in Aerodiesels, : http://en.wikipedia.org/wiki/Aircraft_diesel_engine Link to a running engine:: https://www.youtube.com/watch?v=JrAoj5Cuu68


 


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How a 2 stroke detroit diesel engine runs
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firing up the commer knocker
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An excellent "Look at life" video clip from The Rank Organisation dated September 1965 looking at what's being done to clear the streets of dumped cars, contains some very upsetting scenes! Link to DVD advert. http://networkonair.com/shop/1067-look-at-life-volume-1-transport.html





PAUT MOTOR-REVOLUTIONARY ENGINE.wmv
PAUT ENGINE - Prototype 2 is performed as an engine with two-sided pistons, positioned at 90° to each other, in combination with PAUT two-stroke cycles (fig 1). Such construction provides an engine containing less assembling parts, having smaller mass to power and overall-dimensions to power ratios, which are the presumptions for a successful product to be accomplished and for low cost production/exploitation to be expected. Smaller mass, compared to the prior art engines, derives from the fact that PAUT engine contains considerably less assembling parts lacking elements such as: rods, camshafts, camshaft's driving parts, some valves, large heads. The very construction of the two-sided piston (fig 3) has more advantages. Contact area between two-sided piston and cylinder is considerably larger compared to prior art pistons. Hence, specific pressures are lower and since the two-sided piston is lubricated under the pressure, the friction is considerably smaller, the more so as we know that normal force Fn in the engine center equals zero (fig 2a). All these results with less wear of the piston and the cylinder. Such a two-sided piston has considerably smaller mass compared to the prior art assembly it replaces, consisting of two pistons with their prison-shafts and two belonging rods, resulting in lessening of linear motion inertial forces. This construction has still more advantages as compared to prior art engines such as: - better controlled cooling of cylinders not being adjoined to each other - smaller friction inside the engine due to less moving parts - increasing the capacity of this engine, though considerably, results in overall dimensions to increase only slightly - gravity center is posted lower (it is in the engine center) - better forces configuration in the very engine, while negative forces and torques nullify each other completely (fig 2b) - it is possible to dismount pistons and cylinders without entire dismounting of the engine - no special tools nor machines were used to produce this engine - there is less noise due to the design of the two-sided piston - though the cycle is of two-strokes, the lubrication is performed as if it was four-strokes The objections on this construction should be as follows: - due to the compressed construction , the starter should be mounted on the gear box, but with some endeavour it is possible to mount it on the very engine - the force on the output journal of the crankshaft (fig 2a) is twice compared to the one at prior art engines, but this problem becomes negligible with a proper design of the journal and of the operating shaft bearings - there is no oil sump at this engine, hence an additional oil-pump is needed - since it is a two-stroke cycle engine, the engine cylinders are submited to higher mechanical and thermical load comparing to four-strike cycle Prototype 2 - characteristics (technical data): • Two-stroke engine • Engine-block measurments with heads mounted 500mm x 440mm x 440mm • Engine two-sided piston diameter 100 mm • Compressor two-sided piston diameter 120 mm • Two-sided piston stroke 88 mm • Capacity 7000 cm3 • Number of chambers 4(engine) + 4(compressor) • Number of two-sided pistons 2(engine) + 2(compressor) • Weight 135 kg • Power, torque and specific consumption have not been measured as yet.





Russian Rotary Vane Engine
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EMD 2 stroke locomotive diesel engine





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Stationary Engine: Junkers Freikolbenkompressor
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Heavy diesel locomotive sound, at full throttle.
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BB1 Ploughing Engine at Scorton Vintage & Country Fayre 2007
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► Mercedes-AMG Engine Factory
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Driving a Commer 2 Stroke Knocker TS3
Here's a video of me heading to the freeway in my 1957 Commer Knocker, not to show my gear changing skills but to let you hear it. Ear plugs are not for show!





Gray Antique Tractor at Rollag Minnesota Threshing Show
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Which car is faster? Which Car is Faster?




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