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Modular instrumentation system for real-time measurements and control on reciprocating enginesAn instrumentation system was developed for reciprocating engines. Among the parameters measured are the indicated mean effective pressure, or theoretical work per cycle, and the mass fraction burn rate, a measure of the combustion rate in the cylinder. These computations are performed from measured cylinder pressure and crankshaft angle and are available in real time for the experimenter. A 100 or 200 consecutive-cycle sample is analyzed to reduce the effect of cyclic variations in the engine. Data are displayed in bargraph form, and the mean and standard deviation are computed. Other instruments are also described.
Document ID
19810002807
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Rice, W. J. (NASA Lewis Research Center Cleveland, OH, United States)
Birchenough, A. G. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 4, 2013
Publication Date
November 1, 1980
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
E-455
NASA-TP-1757
Accession Number
81N11315
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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