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  2. Two- and four-stroke engines - Wikipedia

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

    The M4+2 engine, also known as the double-piston internal combustion engine, is a type of internal combustion engine invented by Polish patent holder Piotr Mężyk. [1] The M4+2 engine took its name from a combination of two-stroke engines and four-stroke engines. The two-stroke combustion engine is characterized by a simple construction and ...

  3. Two-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_engine

    Two-stroke engines are still found in a variety of small propulsion applications, such as outboard motors, small on- and off-road motorcycles, mopeds, motor scooters, motorized bicycles, tuk-tuks, snowmobiles, go-karts, RC cars, ultralight and model airplanes. Particularly in developed countries, pollution regulations have meant that their use ...

  4. Outboard motor - Wikipedia

    en.wikipedia.org/wiki/Outboard_motor

    Four-stroke outboards have been sold since the late 1920s, such as the Roness and Sharland. In 1962 Homelite introduced a four-stroke outboard a 55-horsepower (41 kW) motor, based on the four-cylinder Crosley automobile engine. This outboard was called the Bearcat and was later purchased by Fischer-Pierce, the makers of Boston Whaler, for use ...

  5. Marine propulsion - Wikipedia

    en.wikipedia.org/wiki/Marine_propulsion

    Some very long stroke engines have a maximum speed of around 80 rpm. The largest, most powerful engines in the world are slow speed, two stroke, crosshead diesels. Medium speed: any engine with a maximum operating speed in the range 300–1000 rpm. Many modern four-stroke medium speed diesel engines have a maximum operating speed of around 500 rpm.

  6. Talk:Two-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Talk:Two-stroke_engine

    Inboard/Outboard engines, usually 4 stroke have I/O drives which consist of 2 gear boxes. One plug is on top and one plug is on the bottom on either of these gear boxes. If you drain the foot oil, be very careful what type of drive oil is needed, brand only, and fill from the bottom squirting in the oil till it comes out the top plug hole.

  7. 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.

  8. Evinrude Outboard Motors - Wikipedia

    en.wikipedia.org/wiki/Evinrude_Outboard_Motors

    Evinrude Outboard Motors was a North American company that built a major brand of two-stroke outboard motors for boats. Founded by Ole Evinrude in Milwaukee , Wisconsin in 1907, it was formerly owned by the publicly traded Outboard Marine Corporation (OMC) since 1935 but OMC filed for bankruptcy in 2000.

  9. Nissan Outboard Motors - Wikipedia

    en.wikipedia.org/wiki/Nissan_Outboard_Motors

    Nissan outboard motors are produced by Tohatsu Corporation of Tokyo, Japan. They are the second largest producer of outboard motors in the world and produce environmentally conscious TLDI series of two-stroke low pressure direct injection outboards that meet current United States Environmental Protection Agency regulations for the US.

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