The method of the exhaust gas purifying apparatus and the exhaust gas purifying internal combustion engine

Hydrocarbons emitted during diesel engine operation, to purify carbon monoxide and nitrogen oxides. In the middle of the diesel engine exhaust gas passage 2, a catalyst 3 from the upstream of the exhaust gas passage combines NOx selective reduction activity and hydrogen production function, the diesel engine exhaust gas purification apparatus of the lean NOx catalyst 4, which are arranged in the above order it is. It can efficiently purify exhaust gas from diesel engines.