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There are several ways of reducing the content of nitrogen oxides in exhaust gases of combustion engines. The most frequently applied solution has been the use of a catalyst located in the engine's exhaust system (unfortunately efficiency of DeNOx catalyst is not high) or EGR system. Less popular and more technically challenging solutions are based on a system mounted in the exhaust part of the engine...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.