Stor turbuladet totakts-dieselmotor med oprensning af udstødsgas

摘要

A large turbocharged two-stroke diesel engine with crossheads, said engine having a plurality of cylinders (1) in line, a turbocharger (5) and an SCR reactor (19) upstream of the turbocharger and downstream of an exhaust gas receiver (3) . The exhaust gas receiver (3) is connected to the individual cylinders (1) via respective exhaust ducts (35) that introduce the exhaust gas tangentially and cause a swirl in the exhaust gas inside the exhaust gas receiver (3) . The exhaust gas receiver (3) is provided with an outlet (33) . A unit (42) with plurality of vanes (43) around a central axial duct (47) divides the exhausts gas receiver (3) in a mixing section (48) downstream of the unit and an outlet section (49) upstream of the unit (42) The swirling exhaust gas passes along the vanes (43) on its way from the inixing section (48) to the outlet section (49) and the vanes (43) cause the exhaust gas to lose its swirl and gain pressure. The pressure gain causes a portion of the exhaust gas in the outlet section (49) to flow back to the mixing section (48) via said central duct (47) . The reductant is introduced in the flow in said central duct 47) . A large turbocharged two-stroke diesel engine with an exhaust gas receiver (3) with tangential inlets (35) and a tangential outlet (39) is also disclosed It is suggested that Fig. 4 is published with the abstract.