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NEAR-ZERO EMITTING DIESEL-ELECTRIC LOCOMOTIVE USING A HIGH-SPEED DIESEL ENGINE

机译：高速柴油机近零排放的内燃机车

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摘要

A diesel-electric locomotive (10) of this disclosure includes a diesel emissions reduction unit (30, 821), including an inlet (825) configured to receive an exhaust stream of a high-speed diesel engine (11); means (31) for trapping at least a portion of diesel particulate matter contained in the exhaust stream; an aqueous NH3 dosing system (33) including a dosing controller (39) in communication with an electronic locomotive controller (21) and a nitrogen oxide ("ΝΟχ") concentration sensor (41, 111) and an ammonia ("NH3") concentration sensor (43, 113), at least one oxidation catalyst panel (1 19) arranged to isolate the NOx concentration sensor from NH3 in the exhaust stream; mixing elements (35) located between the dosing system and the NOx and NH3 concentration sensors to mix metered aqueous NH3 in the exhaust stream; a selective catalyst reactor bed (37, 323) located between the mixing elements and the NOx and NH3 concentration sensors; and an exhaust heating system (50) in communication with at least one of the dosing and electronic locomotive controllers.
机译：本公开的柴油机车（10）包括柴油排放减少单元（30、821），其包括构造成接收高速柴油发动机（11）的排气流的入口（825）;用于捕集废气流中所包含的至少一部分柴油颗粒物的装置（31）; NH3水溶液的定量给料系统（33），包括与电子机车控制器（21）和氮氧化物（“ NOx”）浓度传感器（41、111）和氨（“ NH3”）浓度连通的定量控制器（39）传感器（43、113），至少一个氧化催化剂板（1 19），其布置成将NOx浓度传感器与废气流中的NH3隔离开;位于定量系统与NOx和NH3浓度传感器之间的混合元件（35），用于在排气流中混合计量的NH3水溶液;位于混合元件与NOx和NH3浓度传感器之间的选择性催化剂反应器床（37、323）;与排气计量和电子机车控制器中的至少一个连通的排气加热系统（50）。

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