Javier S Fernandez

US Patent:

7403850, Jul 22, 2008

Filed:

Sep 29, 2006

Appl. No.:

11/537136

Inventors:

Benjamin J. Boutin - Weston FL, US
Ferdinand G. Oliva - Coral Springs FL, US
John F. Kealty - Coral Springs FL, US
Javier Fernandez - Miami FL, US
Thomas J. Kitchens - Coral Springs FL, US

Assignee:

Dynalco Controls Corporation - Ft. Lauderdale FL

International Classification:

G06F 7/70

US Classification:

701107, 73 3501

Abstract:

The automated fault diagnostic system operates on engine-compressor sets with one vibration sensor per sub-group of engine cylinders and one sensor per compressor cylinder. Vibration signals linked to crankshaft phase angle windows (“VT”) mark various engine events and compressor events. In data-acquisition-learning mode, VT is stored for each engine and compressor event per operating load condition, statistical process control (SPC) theory identifies alarm threshold bands. Operator input-overrides are permitted. If no baseline data is stored, the system automatically enters the learn mode. To monitor, current VT are obtained and current load condition is matched to the earlier load set and alarms issue linking predetermined engine or compressor event to the over-under VT. Baseline data, SPC analysis, alarms and monitoring are set for crankcase flow, engine cylinder exhaust temperatures, ignition system diagnostic messages. Compressor performance alarms use suction and discharge temperatures and pressures.