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2. Harmonic damper - Wikipedia

   en.wikipedia.org/wiki/Harmonic_damper

   Harmonic balancer lower pulley on a four-cylinder engine. A harmonic damper is a device fitted to the free (accessory drive) end of the crankshaft of an internal combustion engine to counter torsional and resonance vibrations from the crankshaft. This device must be an interference fit to the crankshaft in order to operate in an effective ...

3. Dead centre (engineering) - Wikipedia

   en.wikipedia.org/wiki/Dead_centre_(engineering)

   Many sorts of machines are crank driven, including unicycles, bicycles, tricycles, various types of machine presses, gasoline engines, diesel engines, steam locomotives, and other steam engines. Crank-driven machines rely on the energy stored in a flywheel to overcome the dead centre, or are designed, in the case of multi-cylinder engines , so ...

4. Volvo Redblock Engine - Wikipedia

   en.wikipedia.org/wiki/Volvo_Redblock_Engine

   Several components had design changes, longer rods (152 mm (6.0 in) c-c, 7 mm (0.28 in) longer), pistons with a lower compression height, lower friction bearings (smaller in size), a crankshaft with 8 counterweights (instead of 4 on the older Bxx engines) and a heavy harmonic balancer (aka damper) in the crank pulley.

5. Engine balance - Wikipedia

   en.wikipedia.org/wiki/Engine_balance

   With a V angle of 90 degrees and offset crank pins, a V-twin engine can have perfect primary balance. If a shared crank pin is used (such as in a Ducati V-twin engine), the 360° crankshaft results in an uneven firing interval. These engines also have primary reciprocating-plane and rotating-plane imbalances.

6. Oldsmobile V8 engine - Wikipedia

   en.wikipedia.org/wiki/Oldsmobile_V8_engine

   Parts peculiar to this system include a toothed disc between the harmonic balancer and the crank pulley, the "adjacent sensor" (an early form of crankshaft position sensor), a special distributor, an engine temperature sensor, and a rudimentary computer mounted inside the car, under the dashboard. Applications: 1977 Buick Century Estate

7. Torsional vibration - Wikipedia

   en.wikipedia.org/wiki/Torsional_vibration

   Torsional vibration is a concern in the crankshafts of internal combustion engines because it could break the crankshaft itself; shear-off the flywheel; or cause driven belts, gears and attached components to fail, especially when the frequency of the vibration matches the torsional resonant frequency of the crankshaft.