Particle-based flow sensor

Details Particle-based flow sensor Particle-based flow sensor

2007-08-09

2009-06-23

Solis, Erick (Department: 3747)

Measuring and testing

Gas analysis

Gas of combustion

C073S028010, C073S028020, C073S114690, C073S114740, C123S568160, C123S568210

Reexamination Certificate

active

07549317

ABSTRACT:
A fluid conveyance apparatus having more than one particulate matter sensing probe situated at two or more locations on the apparatus. Signals from the probes from at least two locations may indicate particulate matter flowing within a fluid through the conveyance apparatus. The times between signals may be indicated the rate of movement of the particulate matter in the conveyance apparatus and also a flow rate and direction of the fluid. The sensing probe signals may be processed into control signals that may go to a flow control mechanism. An example application of the flow control mechanism may be for an exhaust gas recirculation system of an engine.

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“BG-3 Transient & Steady-State Particulate Flow Sampling System,” Sierra Instruments, Inc., 4 pages, prior to Dec. 31, 2003. Previously Provided in Parent Application 11161221.

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