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  2. Internal combustion engine - Wikipedia

    en.wikipedia.org/wiki/Internal_combustion_engine

    Dugald Clerk developed the first two-cycle engine in 1879. It used a separate cylinder which functioned as a pump in order to transfer the fuel mixture to the cylinder. [19] In 1899 John Day simplified Clerk's design into the type of 2 cycle engine that is very widely used today. [34] Day cycle engines are crankcase scavenged and port timed.

  3. Slider-crank linkage - Wikipedia

    en.wikipedia.org/wiki/Slider-crank_linkage

    A slider-crank linkage is a four-link mechanism with three revolute joints and one prismatic (sliding) joint. [1] The rotation of the crank drives the linear movement of the slider, or the expansion of gases against a sliding piston in a cylinder can drive the rotation of the crank. There are two types of slider-cranks: in-line and offset.

  4. Rotary engine - Wikipedia

    en.wikipedia.org/wiki/Rotary_engine

    A rotary engine is essentially a standard Otto cycle engine, with cylinders arranged radially around a central crankshaft just like a conventional radial engine, but instead of having a fixed cylinder block with rotating crankshaft, the crankshaft remains stationary and the entire cylinder block rotates around it.

  5. Block swap algorithms - Wikipedia

    en.wikipedia.org/wiki/Block_swap_algorithms

    A rotation is an in-place reversal of array elements. This method swaps two elements of an array from outside in within a range. The rotation works for an even or odd number of array elements. The reversal algorithm uses three in-place rotations to accomplish an in-place block swap: Rotate region A; Rotate region B; Rotate region AB

  6. Circular shift - Wikipedia

    en.wikipedia.org/wiki/Circular_shift

    Circular shifts are used often in cryptography in order to permute bit sequences. Unfortunately, many programming languages, including C, do not have operators or standard functions for circular shifting, even though virtually all processors have bitwise operation instructions for it (e.g. Intel x86 has ROL and ROR).

  7. Rodrigues' rotation formula - Wikipedia

    en.wikipedia.org/wiki/Rodrigues'_rotation_formula

    A detailed historical analysis in 1989 concluded that the formula should be attributed to Euler, and recommended calling it "Euler's finite rotation formula." [1] This proposal has received notable support, [2] but some others have viewed the formula as just one of many variations of the Euler–Rodrigues formula, thereby crediting both. [3]

  8. Scuderi engine - Wikipedia

    en.wikipedia.org/wiki/Scuderi_Engine

    The engine, formally called the Scuderi Split Cycle Engine, is a split-cycle, internal combustion engine invented by Carmelo J. Scuderi (April 13, 1925 – October 16, 2002). [3] Scuderi Group, an engineering and licensing company based in West Springfield, Massachusetts and founded by Carmelo Scuderi's children, is testing a working prototype ...

  9. Cycle sort - Wikipedia

    en.wikipedia.org/wiki/Cycle_sort

    def cycle_sort (array)-> int: """Sort an array in place and return the number of writes.""" writes = 0 # Loop through the array to find cycles to rotate. # Note that the last item will already be sorted after the first n-1 cycles. for cycle_start in range (0, len (array)-1): item = array [cycle_start] # Find where to put the item. pos = cycle_start for i in range (cycle_start + 1, len (array ...

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