IC engine cylinder output power measurement apparatus by monitoring the output of an alternator driven by the engine
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United States of America Patent
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-
Feb 11, 1992
Grant Date -
N/A
app pub date -
May 17, 1990
filing date -
Sep 19, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus for measuring the comparative output power of each cylinder of a multi-cylinder engine comprises a digital signal processor 1 and a phase locked loop detector 2. By inputting instantaneous current measurements from (e.g.) a current transformer attached to an alternator output of an engine under test and analysing same in the processor 1, instantaneous engine speed may be measured. This measurement may be processed to determine comparative measurements of compression and power output of each of the cylinders.
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