Apparatus for detecting trouble states in engine
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United States of America Patent
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Dec 8, 1998
Grant Date -
N/A
app pub date -
Nov 9, 1995
filing date -
Feb 22, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus detects trouble states in a gas engine in which the exhaust gas pressure after combustion in each cylinder is measured by a pressure sensor installed on a collecting exhaust pipe. An average value of the exhaust pressure, a standard deviation and a fluctuation values of the average value in each cylinder is calculated. Based on the calculated data, it is specified whether the trouble occurring in the gas engine corresponds to a misfire, a leakage in the inlet value or a leakage in the outlet valve, as well as which cylinder is the cause of the problem.
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