Process quantity measurement method and apparatus of engine output
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United States of America Patent
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Jun 15, 2010
Grant Date -
May 8, 2008
app pub date -
Nov 14, 2005
filing date -
Jan 11, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process quantity measurement method with which an engine output is accurately measured in a relatively simple manner. Torque of an engine is measured based on the amount of torsion of the output shaft of the engine, and an engine output is obtained based on the measured torque. On the other hand, an engine output is calculated based on input and output heat quantity, and a difference between the engine output based on the torque and the engine output based on the input and output heat quantity is obtained in advance. When the engine is operated, the previously obtained difference is added to the engine output that is based on the calculated input and output heat quantity to obtain the engine output.
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