Nutating balancer for internal combustion engine
AssigneeCummins IP, Inc.
InventorDavid M. Barnes
Life of this patent
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Abstract
A nutating balance device for mitigating vibrations of an internal combustion engine having a crankshaft includes a coupler coupled to the engine crankshaft. The device also includes a weight coupled to the coupler. The coupler is configured to move the weight in sync with the crankshaft. The nutating balance device can generate variable torque pulsations or moments corresponding to torque harmonic frequencies of the internal combustion engine.
Claims20
A nutating balance device for balancing vibrations of a slider crank internal combustion engine having a crankshaft, comprising:
- a coupler coupled to the engine crankshaft;
- and
- a weight coupled to the coupler, the coupler being configured to move the weight in sync with the crankshaft.
An apparatus for mitigating vibration within an internal combustion engine, comprising:
- a weight configured to oscillate;
- a coupler coupling the weight to the internal combustion engine, the coupler being operable to i) transfer power from the internal combustion engine to oscillate the weight at a fixed order with respect to engine speed according to torque harmonic frequencies of the internal combustion engine as the engine operates;
- and ii) transfer torque pulsations or moments generated by the oscillating weight to the internal combustion engine to mitigate the torque harmonic frequencies of the internal combustion engine.
An internal combustion engine, comprising:
- a crankshaft rotatable about a longitudinal axis;
- a coupler coupled to and rotatable by the crankshaft, the coupler having a linkage that pivots about a first axis and rotates about a second axis, the first axis being perpendicular to the second axis;
- and
- an oscillating weight operably coupled to the linkage to generate variable torque pulsations or moments corresponding to torque harmonic frequencies of the internal combustion engine.
Dependencies are inferred from the claim text.