Systems, apparatuses, and methods of determining plugging or deplugging of a diesel oxidation catalyst device
First Claim
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1. An engine system comprising:
- a subsystem defining an exhaust flowpath from an exhaust input to an exhaust output, a diesel oxidation catalyst device, and a filter;
a sensor arrangement structured to detect temperature information for an exhaust flow along the exhaust flowpath through the diesel oxidation catalyst device; and
circuitry responsive to the sensor arrangement to determine a control signal representative of a plugging or de-plugging of the diesel oxidation catalyst device as a function of the temperature information and time.
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Abstract
One embodiment of the present invention includes a unique technique to regulate operation of an internal combustion engine. Other embodiments include unique apparatus, devices, systems, and methods relating to internal combustion engine including exhaust aftertreatment components, apparatus, and systems.
56 Citations
20 Claims
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1. An engine system comprising:
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a subsystem defining an exhaust flowpath from an exhaust input to an exhaust output, a diesel oxidation catalyst device, and a filter; a sensor arrangement structured to detect temperature information for an exhaust flow along the exhaust flowpath through the diesel oxidation catalyst device; and circuitry responsive to the sensor arrangement to determine a control signal representative of a plugging or de-plugging of the diesel oxidation catalyst device as a function of the temperature information and time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus comprising:
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a diesel engine including a flow pathway, a diesel oxidation catalyst device disposed substantially in the pathway, and a particle filter disposed substantially in the pathway; a controller and a sensor arrangement operably coupled to the controller effective to provide information representative of temperature of the catalyst device and one or more of exhaust particulate matter content, exhaust mass flow, and exhaust hydrocarbon content; and operating logic executed by the controller to calculate one or more of a rate of plugging and a rate of de-plugging of the catalyst device based on the information. - View Dependent Claims (10, 11, 12, 13)
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14. A method comprising:
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operating an exhaust treatment system including a diesel oxidation catalyst device and a soot filter; determining information corresponding to temperature of a the diesel oxidation catalyst device; calculating a plugging rate based at least in part upon the input temperature and other information corresponding one or more of one or more of exhaust particulate matter content, exhaust mass flow, and exhaust hydrocarbon content; and initiating a de-plugging operation. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification