Method and apparatus for feature extraction from internal combus

Details Method and apparatus for feature extraction from internal combus Method and apparatus for feature extraction from internal combus

1993-01-08

1995-02-07

Wieder, Kenneth A.

Electricity: measuring and testing

Internal-combustion engine ignition system or device

With analysis of displayed waveform

324378, 731173, 36443104, G01M 1500, F02P 1700

Patent

active

053878701

ABSTRACT:
The invention is a method and apparatus for extracting and analyzing features in real time from primary or secondary ignition waveforms, including engine probes, sampling device, and a processor that extracts from the waveform features such as peak firing height, firing line duration, firing line slope, firing line noise, post firing line duration, primary oscillations, and dwell interval duration and compares them against fixed thresholds and running averages to detect anomalies. Anomalies are reported as they occur allowing diagnosis of transient events as well as steady conditions. Waveforms with or without anomalies may be stored and retrieved as needed.

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Description of Applicants' On-Sale product Allen Test Products, at least one year prior to Jan. 1993, p. 1.

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