Exhaust gas cleaning apparatus

Details Exhaust gas cleaning apparatus Exhaust gas cleaning apparatus

2007-09-04

2007-09-04

Greene, Jason M. (Department: 1724)

Gas separation

With nonliquid cleaning means for separating media

With heating or cooling means

C055S282200, C055S283000, C055S385300, C055S523000, C055SDIG010, C055SDIG030, C096S417000, C096S418000, C096S419000, C096S420000, C096S421000, C060S311000

Reexamination Certificate

active

10492025

ABSTRACT:
In an exhaust gas cleaning apparatus (30) in which a before and after differential pressure (ΔP) of a filter (32) used to trap particulates is detected for regeneration of the filter (32), a time at which, during filter regeneration, the temperature of the outlet section of the filter (32) falls below the temperature of the inlet section thereof (ΔT>M), using a first temperature sensor (36) and a second temperature sensor (37), is determined as being the timing of the completion of the regeneration of the filter (32). The value of the before and after differential pressure (ΔP) at the time of this regeneration completion is used to estimate the quantity of residual ash in the filter (32), and when this estimated residual ash quantity is the same as, or greater than, a prescribed value (PX), a replacement warning signal (K3) is output urging replacement of the filter (32).

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