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2. Two- and four-stroke engines - Wikipedia

   en.wikipedia.org/wiki/Two-_and_four-stroke_engines

   The research on this showed a 27% reduction in fuel consumption. [8] [9] The M4+2 engine has a four-stroke piston and a two-stroke piston. The shaft of the four-stroke piston rotates twice as fast as the shaft of the two-stroke piston, and the two-stroke part always runs at half speed.

3. Partially premixed combustion - Wikipedia

   en.wikipedia.org/wiki/Partially_premixed_combustion

   This premixed charge is too lean to ignite during the compression stroke – the charge will ignite after the last fuel injection ends near TDC. The fuel efficiency and working principle of a PPC engine resemble those of Diesel engine, but the PPC engine can be run with a variety of fuels. Also, the partially premixed charge burns clean. [6]

4. Four-stroking - Wikipedia

   en.wikipedia.org/wiki/Four-stroking

   Four-stroking is a condition of two-stroke engines where combustion occurs every four strokes or more, rather than every two. Though normal in some instances at idle, extremely high engine speeds, and when letting off the throttle, such firing is uneven, noisy and may, in cases of malfunction, damage the engine if allowed to continue unabated.

5. Two-stroke engine - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_engine

   A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft.

6. Cuyuna 430 - Wikipedia

   en.wikipedia.org/wiki/Cuyuna_430

   Data from Cuyuna & McCornack General characteristics Type: Direct drive two-stroke piston aircraft engine Bore: 2.658 in (68 mm) Stroke: 2.362 in (60 mm) Displacement: 428 cc (26.11 cubic inches) Dry weight: 65 lb (29 kg) Designer: McCornack/Cuyuna Components Fuel type: Regular auto fuel Oil system: 40:1 premixed fuel and oil Cooling system: fan forced air Performance Power output: 30 hp (22 ...

7. Cleveland Diesel Engine Division - Wikipedia

   en.wikipedia.org/wiki/Cleveland_Diesel_Engine...

   The engines operates on the 2-stroke cycle principle, are air started, and are rated at 1600 bhp at 756 rpm on the 16-248 and 750 rpm on the 16-278A. The size of the bore and stroke of the 16-248 engine is 8 + 1 ⁄ 2 inches and 10 + 1 ⁄ 2 inches respectively as compared to 8 + 3 ⁄ 4 inches and 10 + 1 ⁄ 2 inches for Model 16-278A.