Process for reducing the nitrogen oxides content of exhaust gas from an internal combustion engine
    1.
    发明授权
    Process for reducing the nitrogen oxides content of exhaust gas from an internal combustion engine 失效
    降低来自内燃机的废气的氮氧化物含量的方法

    公开(公告)号:US06238525B1

    公开(公告)日:2001-05-29

    申请号:US09299630

    申请日:1999-04-27

    IPC分类号: C01B2100

    摘要: A process for reducing the nitrogen oxides content of the exhaust gas from an internal combustion engine includes treating the exhaust gas in an electric gas discharge such that at least one of nitrogen dioxide or nitric acid are formed from nitrogen oxides in the exhaust gas; storing the nitrogen dioxides and/or the nitric acid in the form of nitrates on a nitrogen oxides storage material during phases when the engine operates with a greater than a stoichiometric air/fuel ratio (i.e., the storage phase); decomposing the nitrates to give nitrogen oxides during brief phases when the engine operates with a less than the stoichiometric air/fuel ratio (i.e., the desorption phase); and reducing the nitrogen oxides which are released from the storage material to nitrogen. The nitrogen oxides storage material may be located in an electric gas discharge zone, and the exhaust gas may be passed through the discharge and then over the storage material.

    摘要翻译: 用于降低来自内燃机的废气的氮氧化物含量的方法包括以排气中的氮氧化物形成至少一种二氧化氮或硝酸的电气放电来处理排气, 当发动机以大于化学计量的空气/燃料比(即储存阶段)运转时,在氮氧化物储存材料中将氮氧化物和/或硝酸以硝酸盐的形式储存在相中。 当发动机以小于化学计量的空气/燃料比(即,解吸阶段)运行时,在短时间内分解硝酸盐以产生氮氧化物; 并将从储存材料释放的氮氧化物还原成氮气。 氮氧化物存储材料可以位于电气放电区域中,并且排气可以通过排出物,然后通过存储材料。

    Process for checking the operability of an exhaust gas purification catalyst
    3.
    发明授权
    Process for checking the operability of an exhaust gas purification catalyst 有权
    用于检查废气净化催化剂的可操作性的方法

    公开(公告)号:US06739176B2

    公开(公告)日:2004-05-25

    申请号:US09809355

    申请日:2001-03-16

    IPC分类号: G01M1500

    摘要: A process for checking the operability of an exhaust gas purification catalyst for diesel engines, which has a light-off temperature and a degree of conversion rCO for carbon monoxide (CO), by direct measurement of the carbon monoxide concentration in combination with a temperature measurement. To evaluate the remaining catalytic activity of the catalyst the difference &Dgr;T between the current catalyst exit temperature TE of the exhaust gas and the light-off temperature TCO,50%,fresh of the fresh catalyst for carbon monoxide stored as a function of the speed and load &Dgr;T=TE−TCO,50%,fresh is determined and the degree of conversion rCO for carbon monoxide is ascertained.

    摘要翻译: 通过一氧化碳浓度的直接测量与温度测量结合来检查具有一氧化碳(CO)的起燃温度和转化度rCO的用于柴油机的排气净化催化剂的可操作性的方法 。 为了评估催化剂的剩余催化活性,废气的当前催化剂出口温度TE与起燃温度TCO之间的差值ΔTT为50%,一氧化碳新鲜催化剂的新鲜作为速度存储, 确定负载,并确定一氧化碳的转化程度rCO。

    Process for producing electrical energy with the aid of a fuel cell
    4.
    发明授权
    Process for producing electrical energy with the aid of a fuel cell 失效
    借助燃料电池生产电能的方法

    公开(公告)号:US06686075B2

    公开(公告)日:2004-02-03

    申请号:US09859680

    申请日:2001-05-18

    IPC分类号: H01M816

    CPC分类号: H01M8/0662 H01M8/1007

    摘要: A process for producing electrical energy with the aid of a fuel cell, which includes the steps of reforming an organic fuel, removing carbon monoxide from the reformate, and reacting the hydrogen present in the reformate with oxygen, in a fuel cell, to thereby produce electrical energy. The carbon monoxide is removed from the reformate by treating the reformate in a bioreactor which contains a thermophilic microorganism strain which metabolizes carbon monoxide, under anaerobic conditions, to give carbon dioxide and hydrogen.

    摘要翻译: 一种借助于燃料电池生产电能的方法,其包括重整有机燃料,从重整产物中除去一氧化碳,并使燃料电池中存在于重整产品中的氢与氧气反应的步骤,从而产生 电能。 通过在含有在厌氧条件下代谢一氧化碳的嗜热微生物菌株的生物反应器中处理重整产物,从重整产物中除去一氧化碳,得到二氧化碳和氢气。