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1. 发明授权

US06852292B2 Ammonia storage and injection in NOx control 失效
标题翻译：氨储存和注入在NOx控制
公开(公告)号：US06852292B2
公开(公告)日：2005-02-08
申请号：US10132552
申请日：2002-04-24
申请人： Lester P. Berriman , John M. Zabsky , Lionel S. Simons
发明人： Lester P. Berriman , John M. Zabsky , Lionel S. Simons
IPC分类号： F01N5/02 , B01D53/56 , B01D53/90 , B01D53/92 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/00
CPC分类号： F01N3/2066 , B01D53/56 , B01D53/86 , B01D53/90 , B01D53/92 , B01D53/9413 , B01D2251/2062 , F01N2610/02 , F01N2610/06 , F01N2610/1453 , Y02T10/24
摘要： A system is described for storing ammonia and injecting it into the exhaust gas stream of an engine to reduce nitrogen oxides. The ammonia is stored as a liquid mixture (70) of ammonia and water in a container (50). In one system, the mixture passes through a tube with a portion (62) in contact with the exhaust gas pipe (16) to heat the mixture and separate the ammonia from the water, with the ammonia being further heated at a nozzle (84) to activate the ammonia before injection into an upstream portion of the exhaust gas pipe.
摘要翻译：描述了一种用于存储氨并将其注入发动机的废气流中以减少氮氧化物的系统。氨作为氨和水的液体混合物（70）储存在容器（50）中。在一个系统中，混合物通过具有与排气管（16）接触的部分（62）的管，以加热混合物并将氨与水分离，氨在喷嘴（84）处进一步加热，以在喷射到排气管的上游部分之前激活氨。

2. 发明授权

US5609026A Engine NOx reduction 失效
标题翻译：发动机NOx减少
公开(公告)号：US5609026A
公开(公告)日：1997-03-11
申请号：US83657
申请日：1993-06-28
申请人： Lester P. Berriman , John M. Zabsky , James W. Davis , William M. Hylton
发明人： Lester P. Berriman , John M. Zabsky , James W. Davis , William M. Hylton
IPC分类号： F01N3/20 , F01N3/36 , F02B1/04 , F01N3/28
CPC分类号： F01N3/2066 , F01N3/36 , F01N2610/02 , F01N2610/1453 , F02B1/04 , Y02T10/24
摘要： A method and apparatus are provided for reducing pollutants and especially nitrogen oxides, or NOx, in the exhaust gases of an engine. The apparatus includes a device for injecting ammonia into a conduit that extends between cylinder exhaust valves and a catalytic converter, to mix the ammonia with the exhaust gases. Ammonia injection occurs at a location a plurality of inches downstream of the exhaust valves to avoid burning of the ammonia by flames. The injection preferably occurs at a location where the exhaust gases are at a temperature of at least about 1200.degree. F. to cause considerable reaction of the ammonia with NOx in the exhaust gases prior to the gases reaching the catalyst, so less NOx must be removed along the catalyst. To minimize ammonia use, it is injected only for a limited period such as a minute after a cold engine is started when the catalyst is too cold to cause significant reactions, and during operation of the engine at high power levels when the greatest amounts of NOx are produced.
摘要翻译：提供了一种用于减少发动机废气中的污染物，特别是氮氧化物或NOx的方法和装置。该装置包括用于将氨注入到在气缸排气阀和催化转化器之间延伸的导管中以将氨与废气混合的装置。氨喷射发生在排气门下游多个英寸的位置，以避免由于火焰而燃烧氨。注射优选在排气处于至少约1200°F的温度的位置处发生，以在气体到达催化剂之前使氨与废气中的NOx发生相当大的反应，因此必须除去较少的NO x 沿催化剂。为了最大限度地减少氨的使用，只有在发动机冷启动后几分钟才能注入有限的时间，当催化剂太冷而不能引起显着的反应时，并且在最大量的NOx 被生产。

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