METHOD OF DECOMPORATING NITROGEN DIOXIDE (NO2) IN NITROGEN MONOXIDE (NO) IN EXHAUST GAS FROM A POOR BURNT INTERNAL COMBUSTION ENGINE

摘要

"Method of decomposing nitrogen dioxide into nitrogen monoxide in an exhaust gas of a poor burning internal combustion engine, exhaust system for an internal combustion engine, internal combustion engine, and, vehicle." a method of decomposing nitrogen dioxide into nitrogen monoxide in an exhaust gas of a poor burning internal combustion engine, such as a diesel engine, comprising adjusting the hydrocarbon ratio c1: nitrogen oxides (hc c1: no ~ x ~) exhaust gas to 0, 1 to 2 and contact this exhaust gas mixture with a particulate acidic refractory oxide selected from the group consisting of zeolites, tungsten doped titania, zirconia-titania, gamma-alumina, amorphous silica silica and mixtures of any two or more of these, and pass the effluent gas into the atmosphere.