Apparatus and method for testing rotational balance of crankshaft
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United States of America Patent
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Jan 11, 2005
Grant Date -
Dec 18, 2003
app pub date -
May 15, 2003
filing date -
May 16, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
Measurement is made of centrifugal force produced on a crankshaft to be tested that is being rotated about its rotation axis, to provide centrifugal force variation information of the crankshaft. Also, measurement is made of errors in respective rotational phases of crankpins of the crankshaft about rotation axes of the crankpins. Dummy information, comprising rotational unbalance data representative of rotational unbalance components to be removed from the centrifugal force variation information of the crankshaft, is created using the measured errors in the respective rotational phases. Then, an initial rotational unbalance value of the crankshaft is determined, using the dummy information and the centrifugal force variation information of the crankshaft.
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