Exhaust gas purifying apparatus for internal combustion engine

Details Exhaust gas purifying apparatus for internal combustion engine Exhaust gas purifying apparatus for internal combustion engine

2008-07-29

2008-07-29

Tran, Binh Q (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S277000, C060S284000, C060S295000, C073S118040

Reexamination Certificate

active

11455801

ABSTRACT:
An exhaust gas purifying apparatus for an internal combustion engine, including a filter provided in an exhaust system of the engine for trapping particulates in exhaust gases, and a pressure difference sensor for detecting a pressure difference between an upstream side pressure of the filter and a downstream side pressure of the filter. A non-frozen state of the pressure difference sensor is determined based on at least one of a first parameter relevant to an exhaust gas temperature of the engine and a second parameter relevant to an atmospheric temperature. An abnormality of the filter is determined based on a result of the non-frozen state determination.

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