PARTICULATE MATTER STORAGE QUANTITY MEASURING METHOD OF EXHAUST EMISSION CONTROL FILTER

摘要

PROBLEM TO BE SOLVED: To provide a measuring method that can accurately evaluate a collecting quantity of PM stored in a DPF.

SOLUTION: The particulate matter storage quantity measuring method includes propagating ultrasonic waves generated by a transmitter 3 provided directly to the DPF or outside a vessel and a heat insulation material 6 having a property of propagating the ultrasonic waves, measuring the quantity of the PM stored in the DPF 2 installed in the middle of an exhaust pipe 1 of a diesel engine and made of porous ceramics, by a receiver 4, and determining the storage quantity of the PM based on the result.

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