Measuring and testing – Internal combustion engine or related engine system or... – Irregular combustion
Reexamination Certificate
2006-09-06
2008-12-09
McCall, Eric S (Department: 2855)
Measuring and testing
Internal combustion engine or related engine system or...
Irregular combustion
C073S114690
Reexamination Certificate
active
07461545
ABSTRACT:
A method and apparatus is presented for monitoring the cyclic variability of combustion or one or more cylinders of a reciprocating internal combustion engine. Exhaust temperature signals are acquired from one or more exhaust temperature sensors. Cycle-by-cycle values which are related to combustion characteristics are obtained from each exhaust temperature signal. Statistical parameters related to the dispersion of sets of the cycle-by-cycle values are then obtained. The statistical parameters are used to provide an indication of the cyclic variability of the engine.
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D.P. Gardiner and M.F. Bardon; A Cyclic Variability Monitoring System Based Upon Cyclc Resolved Exhaust Temperature Sensing.
ASME Technical Paper ICEF2005-1294, Proceedings of ICEF2005 ASME Internal Combustion Engine Division.
2005 Fall Technical Conference, Sep. 11-14, 2005, Ottawa, Ontario, Canada.
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