Particulate loading monitoring system
First Claim
1. A particulate loading monitoring system for a filter medium located within a particulate trap, the particulate trap located in an exhaust conduit, comprising:
- a first probe configured to transmit a first radio frequency signal within the exhaust conduit; and
a second probe located remotely from the particulate trap and configured to receive the first radio frequency signal propagated within the exhaust conduit.
1 Assignment
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Accused Products
Abstract
A particulate trap regeneration system is provided, which may include a particulate trap having a filter medium configured to remove one or more types of particulate matter from an exhaust flow of an engine and a regeneration device configured to reduce an amount of particulate matter in the particulate trap, as well as a radio frequency-based particulate loading monitoring system configured to determine an amount of particulate matter trapped by the filter medium. The particulate loading monitoring system may include at least one radio frequency probe configured to transmit radio frequency signals of predetermined magnitude and predetermined frequency toward the filter medium and at least one radio frequency probe configured to receive and measure the magnitude of received radio frequency signals that pass through the filter medium. Further, the system may be configured to transmit radio frequency signals along a length of the exhaust conduit.
23 Citations
14 Claims
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1. A particulate loading monitoring system for a filter medium located within a particulate trap, the particulate trap located in an exhaust conduit, comprising:
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a first probe configured to transmit a first radio frequency signal within the exhaust conduit; and a second probe located remotely from the particulate trap and configured to receive the first radio frequency signal propagated within the exhaust conduit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14)
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11. A method of determining particulate loading of a filter medium located within a particulate trap, the particulate trap located in an exhaust conduit, comprising:
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determining a value indicative of an amount of particulate matter trapped in a filter medium; transmitting the value as at least a part of a first radio frequency signal from the particulate trap within the exhaust conduit; and receiving the first radio frequency signal propagated within the exhaust conduit upstream and located remotely from the particulate trap. - View Dependent Claims (12, 13)
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Specification