Yuhuan Sanhe Auto Parts Industry Co., Ltd.
Yuhuan Sanhe Auto Parts Industry Co., Ltd.
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The primary function of the SCR catalyst in a Diesel ATS is to convert harmful nitrogen oxides (NOx = NO + NO2) in the exhaust gas to nitrogen and water. The SCR reaction takes place at the catalyst surface in the presence of NH3 which is generated from AdBlue®/DEF (solution of 30% of Urea in water) upfront the SCR catalyst.
Dinex has a variety of SCR catalyst technologies that can be selected based on specific application conditions and ATS temperature levels. Typically, titanium-vanadium based technologies are suitable for applications, where the exhaust gas temperature is not exceeding 550°C level. The Cu-SCR technology is designed for high DeNOx functionality at low temperatures and the Fe-SCR technology is suitable for conditions where the exhaust temperatures exceed 600°C.
Advanced emissions regulations like EuroVI / EPA10 / China N6 / Bharat S6 need more than 95% NOx conversion levels and the Dinex Cu-SCR technology achieves conversion levels well above this limit.
This SCR technology is typically characterized by high NOx conversion activity in a wide temperature window with very low NH3 oxidation at high temperatures which ensures optimal AdBlue®/DEF utilization.
