Patent ID: 7550119
Filing Date: 2009-06-23
Classification: F01N,Y02T,Y10S

Abstract:
1. An exhaust gas purification apparatus comprising: a casing; a honeycomb-like filter accommodated in the casing and comprising a porous silicon carbide sinter carrying an exhaust gas purification catalyst, the honeycomb-like filter being configured to remove particulates in an exhaust gas; a regeneration device configured to cause the honeycomb-like filter to be preheated with heat of the exhaust gas before regenerating the honeycomb-like filter; and a switch valve positioned downstream to the casing and configured to switch a flow of the exhaust gas, wherein the regeneration device comprises a first temperature detector configured to detect a temperature in the casing, a second temperature detector configured to detect a temperature of the exhaust gas, and a processor configured to make a comparison of the temperature in the casing with the temperature of the exhaust gas and to open the switch valve based on the comparison to preheat the honeycomb-like filter with the exhaust gas.