Method and apparatus for monitoring engine performance as a function of soot accumulation in a filter
AssigneeArvin Technologies, Inc.
InventorsRandall J. Johnson, Wilbur H. Crawley
Life of this patent
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Abstract
A method of monitoring engine performance as a function of soot accumulation in a particulate filter includes determining characteristics of soot accumulation in the filter, analyzing the characteristics, and generating an error signal if the characteristics are indicative of predetermined engine performance conditions. An electronic controller configured to monitor soot accumulation in such a manner is also herein disclosed.
Claims14
A method of monitoring engine performance, the method comprising the steps of:
- determining a rate of change of a pressure drop across a particulate filter to determine the characteristics of soot accumulation in the particulate filter,
- analyzing the characteristics to determine if the characteristics are indicative of predetermined engine performance conditions, and
- generating an error signal if the characteristics are indicative of predetermined engine performance conditions.
A method of monitoring engine performance, the method comprising the steps of:
- determining a rate of change of a pressure drop across a particulate filter to determine a rate of soot accumulation within the particulate filter,
- analyzing the rate of soot accumulation within the particulate filter to determine if the rate of soot accumulation within the particulate filter is indicative of predetermined engine performance conditions, and
- generating an error signal if the rate of soot accumulation within the particulate filter is indicative of predetermined engine performance conditions.
An emission abatement assembly for treating exhaust gases from an internal combustion engine, the emission abatement assembly, comprising:
- a particulate filter,
- a sensor configured to sense a pressure drop across the particulate filter, and
- a controller electrically coupled to the sensor, the controller comprising (i) a processor, and (ii) a memory device electrically coupled to the processor, the memory device having stored therein a plurality of instructions which, when executed by the processor, cause the processor to:
- monitor output from the sensor to determine a rate of change of the pressure drop across the particulate filter,
- analyze the rate of change to determine if the rate of change is indicative of predetermined engine performance conditions, and
- generate an error signal if the rate of change is indicative of predetermined engine performance conditions.
Dependencies are inferred from the claim text.