| abstract |
【Task】 An object of the present invention is to provide an exhaust gas purification system exhibiting high exhaust gas purification performance. [Solution] The present invention includes a carrier containing aluminum oxide, an exhaust gas purifying device provided on the carrier and containing a catalyst containing gallium, connected to an internal combustion engine, and a system connected to the exhaust gas purifying device and increasing the oxygen concentration. In the purification system, the system for increasing the oxygen concentration is characterized in that the oxygen concentration is higher than the oxygen concentration of the gas after combustion of the internal combustion engine. [Selection] Figure 7 |