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2. 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.

3. Rotax 532 - Wikipedia

   en.wikipedia.org/wiki/Rotax_532

   The 582 increased the cylinder bore from the 532's 72 mm to 76 mm. This increased the displacement from 521.2 cc to 580.7 cc, an increase of 11%. The increased displacement had the effect of flattening out the 532's torque curve and allowed the 582 to produce useful power over a wider rpm range. Reliability over the 532 was also improved. [1] [2]

4. 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.

5. 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]

6. HKS 700E - Wikipedia

   en.wikipedia.org/wiki/HKS_700e

   Data from Cliche & HKS General characteristics Type: Two cylinder, four-stroke aircraft engine Bore: 85 mm (3.3 in) Stroke: 60 mm (2.4 in) Displacement: 680 cc (41.49 cu in) Dry weight: 55 kg (121 lb) equipped with electrical system, electric starter, carburetors, gearbox, exhaust system, oil tank and cooler Components Valvetrain: two intake and two exhaust valves per cylinder Fuel type ...

7. Premixed flame - Wikipedia

   en.wikipedia.org/wiki/Premixed_flame

   A premixed flame is a flame formed under certain conditions during the combustion of a premixed charge (also called pre-mixture) of fuel and oxidiser. Since the fuel and oxidiser—the key chemical reactants of combustion—are available throughout a homogeneous stoichiometric premixed charge, the combustion process once initiated sustains ...