Patent ID: 9468877
Filing Date: 2016-10-18
CPC Classification: B01D,G01M,G01N

Claim Text:
1. An exhaust gas analyzing apparatus for analyzing exhaust gas, the apparatus comprising: a first filter flow path provided with a first filter for passing the exhaust gas therethrough and a first sensor for detecting clogging of the first filter; a second filter flow path provided with a second filter for passing the exhaust gas therethrough and a second sensor for detecting clogging of the second filter; an exhaust gas analyzing part for analyzing combustion byproduct components contained in the exhaust gas passing through the first or second filters; a flow path switching mechanism for selectively passing the exhaust gas to the first or second filter flow paths; a pulse purge mechanism provided in each of the first and second filter flow paths, the pulse purge mechanism for supplying purge gas to each of the first and second filters in a pulsed manner; a first filter heating mechanism for heating the first filter; a second filter heating mechanism for heating the second filter; and one or more computers programmed to execute