SYSTEM FOR PARTICULATE MATTER SENSOR SIGNAL PROCESSING
First Claim
12. A processing system for particulate matter sensing comprising:
- a particulate matter (PM) sensor for being positioned in an exhaust stream;
a processor connected to the PM sensor; and
an engine crank angle input connected to the processor; and
wherein the processor comprises a program for providing analyzed profiles of individual engine cylinder behavior.
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Accused Products
Abstract
A system having a particulate matter sensor in an exhaust stream of an engine upstream from a particulate filter and another such sensor downstream from the filter. There may also be an exhaust gas recirculation (EGR) control on the engine. The amount of particulate matter in or loading of the filter may be determined by the upstream filter. The working condition of the filter may be determined by the downstream sensor. The filter may have a heater and control for providing operational and particulate matter burn-off temperatures to the filter. A processor may be connected to the sensors, the EGR control and the filter heater control.
47 Citations
31 Claims
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12. A processing system for particulate matter sensing comprising:
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a particulate matter (PM) sensor for being positioned in an exhaust stream; a processor connected to the PM sensor; and an engine crank angle input connected to the processor; and wherein the processor comprises a program for providing analyzed profiles of individual engine cylinder behavior. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A processing system for determining engine parameters comprising:
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a particulate matter transducer profile; a charge amplifier having an input connected to the transducer profile; a data extractor connected to the charge amplifier; and a signal conditioner and a processor connected to the data extractor. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method for analyzing particulate matter (PM) of an exhaust gas of an engine, comprising:
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detecting particulate matter of an exhaust gas; converting the detection of particulate matter of the exhaust gas into PM signals; and processing the PM signals into information about each cylinder. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification