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2. Motorized bicycle - Wikipedia

   en.wikipedia.org/wiki/Motorized_bicycle

   A motorized bicycle is a bicycle with an attached motor or engine and transmission used either to power the vehicle unassisted, or to assist with pedalling. Since it sometimes retains both pedals and a discrete connected drive for rider-powered propulsion, the motorized bicycle is in technical terms a true bicycle, albeit a power-assisted one.

3. Two-stroke diesel engine - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_diesel_engine

   A two-stroke diesel engine is a diesel engine that uses compression ignition in a two-stroke combustion cycle. It was invented by Hugo Güldner in 1899. [ 1] In compression ignition, air is first compressed and heated; fuel is then injected into the cylinder, causing it to self-ignite. This delivers a power stroke each time the piston rises and ...

4. Free-piston engine - Wikipedia

   en.wikipedia.org/wiki/Free-piston_engine

   Free-piston engine used as a gas generator to drive a turbine. A free-piston engine is a linear, 'crankless' internal combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion chamber gases, a rebound device (e.g., a piston in a closed cylinder) and a load device (e.g. a gas compressor or a linear alternator).

5. Two-stroke oil - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_oil

   The oil is dyed blue to make it easier to recognize in the gasoline. It appears black in this bottle because it is not diluted. Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, or 2-stroke oil) is a special type of motor oil intended for use in crankcase compression two-stroke engines, typical of small gasoline -powered ...

6. Two- and four-stroke engines - Wikipedia

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

   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. This ensures that both parts work optimally regarding fuel consumption at all times. The same principles apply to having two ...

7. Two-stroke engine - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_engine

   For the mathematical concept, see Cyclic permutation. 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. A four-stroke engine requires four strokes of the piston to complete a power cycle ...

8. Kristen Faulkner wasn't supposed to go to the Olympics. She ...

   www.aol.com/news/kristen-faulkner-not-supposed...

   Kristen Faulkner rides on a bicycle (Tim de Waele / Getty Images) Faulkner, 31, was not supposed to compete at the 2024 Paris Games but was called up to Team USA in early July after Taylor Knibb ...

9. Free-piston linear generator - Wikipedia

   en.wikipedia.org/wiki/Free-piston_linear_generator

   The free-piston linear generator's great versatility comes from the absence of a crankshaft, removing a great pumping loss, giving the engine a further degree of freedom. The combustion can be two-stroke engine or four-stroke engine. However, a four-stroke requires a much higher intermediate storage of energy, the rotational inertia of the ...