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  2. Motorized bicycle - Wikipedia

    en.wikipedia.org/wiki/Motorized_bicycle

    Older two stroke engines, commonly use in motorized bicycles powered by internal combustion engines often emitted more pollution than automobiles due to partial combustion of oil included in the fuel, but this is not the case with four-stroke or newer 2 stroke motor designs.

  3. Two-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_engine

    Animation of a 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 in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle.

  4. Phillips Cycles - Wikipedia

    en.wikipedia.org/wiki/Phillips_Cycles

    Phillips Cycles Ltd. was a British bicycle manufacturer based in Smethwick near Birmingham, England. Its history began early in the 20th century and ended in the 1980s by which time it had become part of Raleigh Industries, itself a part of the Tube Investments group. For a number of years, the company was the second-largest bicycle producer in ...

  5. List of motorcycles by type of engine - Wikipedia

    en.wikipedia.org/wiki/List_of_motorcycles_by...

    Motorcycles with a V-twin engine mounted with its crankshaft mounted in line with the frame, e.g. the Honda CX series, are said to have "transverse" engines, [1] [2] while motorcycles with a V-twin mounted with its crankshaft mounted perpendicular to the frame, e.g. most Harley-Davidsons, are said to have "longitudinal" engines. [1] [2] This ...

  6. Two-stroke power valve system - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_power_valve_system

    A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...

  7. Flat-twin engine - Wikipedia

    en.wikipedia.org/wiki/Flat-twin_engine

    Boxer crankshaft configuration. Most flat-twin engines use a boxer configuration for the crankshaft and are therefore called "boxer-twin" engines. In a boxer-twin engine, the 180° crankshaft moves the pistons in phase with each other, therefore the forces generated by one piston are cancelled out by the other, resulting in excellent primary balance.

  8. 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 ...

  9. V3 engine - Wikipedia

    en.wikipedia.org/wiki/V3_engine

    It is a rare configuration, which has been mostly used in two-stroke engines for motorcycles competing in Grand Prix motorcycle racing. The first example was the 1955 DKW 350 . [ 1 ] The 1968 Suzuki RP68 was intended to compete in the 1968 season, however a rule change mandating single-cylinder engines meant that the 50 cc (3.1 cu in) RP68 ...