Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication
Patent
1998-05-29
2000-04-25
Dombroske, George
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle diagnosis or maintenance indication
73116, G01M 1500, G01F 1300, G06F 1500
Patent
active
060554703
ABSTRACT:
The present invention relates to a hot shutdown monitor for an internal combustion engine, in which the engine control module (ECM) obtains engine operating information from various sensors and calculates an instantaneous load factor of the engine based upon various factors such as engine speed, engine fueling, exhaust manifold temperature, oil temperature, etc. This instantaneous load factor is preferably heavily filtered with the output of the filter determining a cumulative weighted load factor that represents a condition of the engine (i.e. the heating and cooling of the engine components). The present invention monitors for a shutdown request both from the operator (i.e. ignition keyoff or from other ECM control algorithms (i.e. engine protection). When an engine shutdown is detected, the weighted load factor is compared to a predetermined threshold. If the threshold is exceeded, a fault indicator is set within the ECM and the current engine data is captured for later retrieval. The filter constant and weighted load factor shutdown threshold may be predetermined based upon the particular engine performance requirements. Other embodiments of the present invention are also disclosed.
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Baraban Dmitri
Londot Ronnie D.
Venable David A.
Cummine Engine Company, Inc.
Dombroske George
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