Exhaust gas purification device for internal combustion engine

An exhaust gas purification device for an internal combustion engine, comprising:

• an NOx storage reduction catalyst disposed on an exhaust passage of the internal combustion engine;
• a filter disposed upstream relative to the NOx storage reduction catalyst, the filter being used to capture particulates contained in exhaust gas;
• means for supplying a fuel such that the fuel will be mixed with the exhaust gas flowing into the filter;
• and
• means for supplying ozone downstream with respect to the filter such that the ozone will be mixed with the exhaust gas flowing into the NOx storage reduction catalyst.

An exhaust gas purification device for an internal combustion engine, comprising:

• an NOx storage reduction catalyst disposed on an exhaust passage of the internal combustion engine;
• a filter disposed upstream relative to the NOx storage reduction catalyst, the filter being used to capture particulates contained in exhaust gas;
• a fuel injector supplying a fuel such that the fuel will be mixed with the exhaust gas flowing into the filter;
• and
• an ozone feeder supplying ozone downstream with respect to the filter such that the ozone will be mixed with the exhaust gas flowing into the NOx storage reduction catalyst.