29-07-2021 дата публикации
Номер: US20210231042A1
Принадлежит:
A diesel-electric locomotive includes a diesel emissions reduction unit, including an inlet configured to receive an exhaust stream of a high-speed diesel engine; means for trapping at least a portion of diesel particulate matter contained in the exhaust stream; an aqueous NHdosing system including a dosing controller in communication with an electronic locomotive controller and a nitrogen oxide (“NO”) concentration sensor and an ammonia (“NH”) concentration sensor, at least one oxidation catalyst panel arranged to isolate the NOconcentration sensor from NHin the exhaust stream; mixing elements located between the dosing system and the NOand NHconcentration sensors to mix metered aqueous NHin the exhaust stream; a selective catalyst reactor bed located between the mixing elements and the NOand NHconcentration sensors; and an exhaust heating system in communication with at least one of the dosing and electronic locomotive controllers. 1. A diesel-electric locomotive comprising:{'b': 21', '11, 'an electronic locomotive controller () in communication with a diesel engine () having a designed operating rpm in a range of 1150 rpm to 2400 rpm;'}{'b': '15', 'a traction generator () connected at one end to the diesel engine, the traction generator being at a same or a lower speed than that of the diesel engine;'}{'b': 30', '821, 'claim-text': [{'b': '825', 'an inlet () configured to receive an exhaust stream of the diesel engine;'}, {'b': '31', 'means () for trapping at least a portion of diesel particulate matter contained in the exhaust stream;'}, {'b': 33', '39', '21', '41', '111', '43', '113', '119, 'sub': x', '3', '3', 'x', '3, 'a dosing system () including a dosing controller () in electronic communication with the electronic locomotive controller () and a nitrogen oxide (“NO”) concentration sensor (, ) and an ammonia (“NH”) concentration sensor (, ), the dosing system configured to meter aqueous NHinto the exhaust stream and including at least one oxidation catalyst ...
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