• As a leading manufacturer in the world’s marine engine market, STX Engine provides all services related to design, manufacture, sales, after-sales services, etc., and is responding to diversifying market demands and severe regulations based on its long experience and know-how.
  • MAN Engine Programme
  • CUMMINS Engine Programme
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• STX-MAN Low Speed Marine
  Main Engine
• STX-MAN Medium Speed Marine
  Main/Aux. Engine
• STX-CUMMINS High Speed Marine
  Main/Aux./Emergency Engine
• SCR System

The IMO Tier III requirements reduce nitrogen-oxide emissions by approximately 76% in comparison to a Tier II engine.
Reinforced environmental regulation for emissions to air-IMO NOx Tier III relevant for all vessels with keel laying on or after 1 January 2016 with engine output of 130kW and above, when operating in NOx emission control areas.
STX-SCR system is the latest and the most proven technology to promise reducing NOx emissions by and upto 90% and it also provide best solutions such as Internal By-pass system, NOx feedback control to fit variety of needs.

STX-SCR SYSTEM Layout

STX-SCR SYSTEM Group

All components will be selected according to engine power.
This table is the references for system design.

• Classification	Engine power(kw)	Reactor DimensionH(mm) / W(mm) / D(mm)	Mixer+pipe(DN)	40% Urea Cons.(liter / hr / engine)
  Group 1	500 ~ 900	2,500 / 890 / 1,020	350	10
  Group 2	910 ~ 1,400	2,400 / 1,210 / 1,020	450	12
  Group 3	1,470 ~ 2,000	2,400 / 1,680 / 1,490	500	29
  Group 4	2,100 ~ 3,000	2,500 / 1,680 / 1,650	700	38
  Group 5	3,500	2,600 / 1,680 / 1,650	700	38
  Group 6	4,000	2,700 / 1,990 / 1,920	750	55
  Group 7	4,500	2,700 / 1,990 / 1,960	800	58
  Group 8	6,000	3,000 / 2,300 / 2,270	900	70
  Group 9	7,000	3,200 / 2,460 / 2,430	1,000	83
  Group 10	8,000	3,200 / 2,620 / 2,590	1,100	94
  Group 11	9,000	3,200 / 2,770 / 2,740	1,200	107

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