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  2. Idle (engine) - Wikipedia

    en.wikipedia.org/wiki/Idle_(engine)

    Idle speed, sometimes simply called "idle", is the rotational speed an engine runs at when the engine is idling, that is when the engine is uncoupled from the drivetrain and the throttle pedal is not depressed. In combustion engines, idle speed is generally measured in revolutions per minute (rpm) of the crankshaft.

  3. Centrifugal force - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_force

    It allows the engine to start and idle without driving the device but automatically and smoothly engages the drive as the engine speed rises. Inertial drum brake ascenders used in rock climbing and the inertia reels used in many automobile seat belts operate on the same principle.

  4. Continuously variable transmission - Wikipedia

    en.wikipedia.org/wiki/Continuously_variable...

    The on-off characteristics of a typical ratchet means that many of these designs are not continuous in operation (i.e. technically not a CVT), but in practice, there are many similarities in operation, and a ratcheting CVT is able to produce a zero-output speed from any given input speed (as per an Infinitely Variable Transmission).

  5. Lawn mower - Wikipedia

    en.wikipedia.org/wiki/Lawn_mower

    A residential riding or "ride-on" mower A battery-powered robotic lawn mower A commercial zero-turn mower. A lawn mower (also known as a grass cutter or simply mower, also often spelled lawnmower) is a device utilizing one or more revolving blades (or a reel) to cut a grass surface to an even height. The height of the cut grass may be fixed by ...

  6. International Harvester - Wikipedia

    en.wikipedia.org/wiki/International_Harvester

    In 1972, the 666 replaced the long-running 656, the 150 hp (110 kW) 1568 V-8 replaced the 1468, and the 160 hp (120 kW) 1566 and the 163 hp (122 kW) 4366 4WD were introduced. Also later that year, four-post ROPs replaced two-post; the "custom" cab was dropped and the "deluxe" cab was now painted red instead of white.

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  8. 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.

  9. Rotary engine - Wikipedia

    en.wikipedia.org/wiki/Rotary_engine

    After starting the engine with a known setting that allowed it to idle, the air valve was opened until maximum engine speed was obtained. Throttling a running engine back to reduce revs was possible by closing off the fuel valve to the required position while re-adjusting the fuel/air mixture to suit.