公开(公告)号：US06217838B1

公开(公告)日：2001-04-17

申请号：US09415236

申请日：1999-10-12

申请人： Patrick Bourges ,  Mathias Bouchez ,  Gil Mabilon ,  Brigitte Martin

发明人： Patrick Bourges ,  Mathias Bouchez ,  Gil Mabilon ,  Brigitte Martin

IPC分类号： B01J800

CPC分类号： B01D53/9418 ,  B01D53/8628 ,  B01D2251/21 ,  B01D2255/1021 ,  B01D2255/20761 ,  B01D2255/50 ,  Y02A50/2325 ,  Y02C20/10 ,  Y02C20/20

摘要： The invention concerns a process for reducing emissions of oxides of nitrogen in a medium which is super-stoichiomeitric in oxidising agents, comprising: a) a step for oxidising at least a portion of the oxides of nitrogen in the presence of an oxidation material; b) a step for injecting organic compounds which comprise at least one atom selected from carbon, hydrogen, oxygen and nitrogen; c) a step for adsorbing at least a portion of the organic compounds onto an adsorption material in the form of molecular species and/or carbonaceous residues; d) a step for selective reduction of at least a portion of the oxides of nitrogen to molecular nitrogen by at least a portion of the molecular species and/or carbonaceous residues formed on the adsorption material.

摘要翻译： 本发明涉及一种减少氧化剂中超化学计量的介质中氮氧化物排放的方法，包括：a）在氧化物质存在下氧化至少一部分氮氧化物的步骤; b ）用于注入包含至少一个选自碳，氢，氧和氮的原子的有机化合物的步骤; c）将至少一部分有机化合物以分子种类和/或形式吸附到吸附材料上的步骤 碳质残渣; d）通过在吸附材料上形成的分子种类和/或碳质残渣的至少一部分，将至少一部分氮氧化物选择还原成分子氮的步骤。

公开(公告)号：US06327851B1

公开(公告)日：2001-12-11

申请号：US09301603

申请日：1999-04-29

申请人： Mathias Bouchez ,  Brigitte Martin ,  Patrick Bourges

发明人： Mathias Bouchez ,  Brigitte Martin ,  Patrick Bourges

IPC分类号： F01N300

CPC分类号： B01D53/9431 ,  F01N3/0807 ,  F01N3/208 ,  F01N2570/14 ,  F01N2610/03 ,  Y02A50/2344 ,  Y02T10/24

摘要： The present invention relates to a process for controlled injection of hydrocarbons into an exhaust line of a lean-burn internal-combustion engine, comprising catalytic elimination of the nitrogen oxides. The process according to the invention consists in injecting a certain amount of hydrocarbons upstream from the catalytic elimination, periodically and for a short time interval, by means of pulsed hydrocarbon injections. The frequency and the amplitude of the hydrocarbon pulses are preferably controlled according to the running conditions of the engine.

摘要翻译： 本发明涉及一种用于将碳氢化合物控制注入稀燃内燃机的排气管线的方法，包括催化消除氮氧化物。根据本发明的方法是将一定量的烃向上游注入 通过脉冲烃注射定期和短时间间隔地进行催化消除。烃脉冲的频率和振幅优选根据发动机的运行条件来控制。

公开(公告)号：US06508057B1

公开(公告)日：2003-01-21

申请号：US09457260

申请日：1999-12-09

申请人： Mathias Bouchez ,  Gil Mabilon ,  Brigitte Martin ,  Patrick Bourges

发明人： Mathias Bouchez ,  Gil Mabilon ,  Brigitte Martin ,  Patrick Bourges

IPC分类号： F01N300

CPC分类号： F01N3/0842 ,  B01D53/9431 ,  F01N3/0814 ,  F01N3/0871 ,  F01N13/009 ,  F01N2610/03 ,  F02D2200/0806 ,  Y02C20/10 ,  Y02T10/24

摘要： A device for eliminating nitrogen oxides in an exhaust line of a lean-burn internal-combustion engine (1) a NOx trap (3) for trapping the nitrogen oxides, a system for regenerating the nitrogen oxides when the NOx trap is saturated, a hydrocarbon treating catalyst (2) placed upstream from the NOx trap (3), a hydrocarbon injector (4) placed upstream from hydrocarbon treating catalyst (2), a probe (7) for measuring the gas mixture strength. The hydrocarbon treating catalyst (2) is a partial (or controlled) hydrocarbon oxidation catalyst that cooperates with the NOx trap (3) for trapping the nitrogen oxides and that allows to obtain, at the outlet thereof, gases with a low oxygen (O2) concentration and with high carbon monoxide (CO) and hydrogen (H2) concentrations. A control unit is furthermore provided for recording and processing data coming from various detectors and/or stored in order to carry out effective regeneration of the NOx trap (3) without disrupting the smooth running of the engine.

摘要翻译： 一种用于消除稀燃内燃机（1）的排气管中的氮氧化物的装置，用于捕获氮氧化物的NOx捕集器（3），当NOx捕集器饱和时再生氮氧化物的系统， 处理催化剂（2），放置在NOx捕集器（3）的上游，位于烃处理催化剂（2）上游的烃喷射器（4），用于测量气体混合物强度的探针（7）。烃处理催化剂（2） 是与NOx捕集器（3）配合以捕获氮氧化物的部分（或受控）烃氧化催化剂，并且允许在出口处获得具有低氧（O 2）浓度和高一氧化碳的气体 CO）和氢（H 2）浓度。此外还提供用于记录和处理来自各种检测器和/或存储的数据的控制单元，以便在不中断e的平稳运行的情况下进行NOx捕集器（3）的有效再生 ngine。