Method for operating internal combustion engine
    14.
    发明授权
    Method for operating internal combustion engine 失效
    内燃机运行方法

    公开(公告)号:US4109461A

    公开(公告)日:1978-08-29

    申请号:US674630

    申请日:1976-04-07

    IPC分类号: F01N3/22 F02M27/02 F01N3/08

    CPC分类号: F02M27/02

    摘要: This invention relates to a method of operating an internal combustion engine which comprises placing a reaction cylinder filled with a catalyst for partially oxidizing a hydrocarbon-base fuel within an exhaust gas passage, feeding a mixture gas consisting of hydrocarbons and a gas which contains oxygen of a quantity providing an "oxygen-to-carbon ratio" of 0.3 to 1.2 into the reaction cylinder, partially oxidizing the hydrocarbons into a reformed gas which consists essentially of H.sub.2 and CO in the temperature range of 800.degree. to 1200.degree. C., mixing the reformed gas and a gas containing oxygen of a quantity providing "an excess oxygen ratio" of 1.1 to 2.0, and feeding this mixed gas into an intake manifold of the internal combustion engine.

    摘要翻译: 本发明涉及一种操作内燃机的方法,该方法包括将填充有用于将烃基燃料部分氧化的催化剂的反应缸放置在废气通道内,将由烃组成的混合气体和含有氧的气体 向反应釜中提供0.3〜1.2的“氧 - 碳比”的量,将烃部分氧化成在800〜1200℃的温度范围内基本上由H 2和CO组成的重整气体,混合 重整气体和含有“过量氧比”为1.1〜2.0的量的含氧气体,并将该混合气体供给到内燃机的进气歧管中。

    Exhaust gas purifying catalyst and process for producing the same
    15.
    发明授权
    Exhaust gas purifying catalyst and process for producing the same 失效
    废气净化催化剂及其制造方法

    公开(公告)号:US4843056A

    公开(公告)日:1989-06-27

    申请号:US164237

    申请日:1988-03-04

    IPC分类号: B01D53/94 B01J23/56 B01J23/63

    摘要: An exhaust gas purifying catalyst for oxidizing HC and CO and for reducing NOx is provided, which comprises at least one oxide of rare earth element, rhodium, and at least one of platinum and palladium loaded on alumina grains. The major amount of rhodium is dispersed on the oxide of rare earth element. Thus, the rhodium solidification into the alumina grains is prevented. Further, when cerium oxide accompanying lanthanum oxide, neodymium oxide or a mixture thereof is used as the oxide of rare earth element, the sintering of cerium oxide or palladium at a high temperature is suppressed since it forms a complex oxide with lanthanum oxide, neodymium oxide or a mixture thereof. Additionally, when stabilized alumina grains in which a rare earth element and an alkali earth element are present in a solid solution state are used, the deterioration of NOx purifying activity of the catalyst at a high temperature is suppressed. The exhaust gas purifying catalyst of this invention has high durability as well as high activity at a high temperature.

    摘要翻译: 提供一种用于氧化HC和CO并用于还原NOx的废气净化催化剂,其包含至少一种稀土元素氧化物,铑,以及负载在氧化铝颗粒上的铂和钯中的至少一种。 铑的主要量分散在稀土元素的氧化物上。 因此,防止了铑固化成氧化铝颗粒。 此外,当使用伴随氧化镧,氧化钕或其混合物的氧化铈作为稀土元素的氧化物时,氧化铈或钯在高温下的烧结被抑制,因为它与氧化镧,氧化钕形成复合氧化物 或其混合物。 此外,当使用其中以固溶状态存在稀土元素和碱土金属元素的稳定的氧化铝颗粒时,抑制了催化剂在高温下的NOx净化活性的劣化。 本发明的废气净化催化剂在高温下具有高耐久性和高活性。

    Exhaust gas clean-up catalyst
    17.
    发明授权
    Exhaust gas clean-up catalyst 有权
    废气净化催化剂

    公开(公告)号:US06645439B2

    公开(公告)日:2003-11-11

    申请号:US09317820

    申请日:1999-05-25

    IPC分类号: B01D5394

    摘要: Exhaust gas clean-up catalysts that contain one or two or more noble metals chosen from the group platinum (Pt), rhodium (Rh), ruthenium (Ru), Iridium (Ir), osmium (Os) and other noble metals, and at least one of tungsten (W) metal or tungsten oxide and, optionally, at least one of niobium (Nb) metal, niobium oxide, molybdenum (Mo) metal, or molybdenum oxide, and which can also contain the metal oxide(s) ceria and/or zirconia if necessary, are especially useful for cleaning up hydrocarbons in exhaust gases.

    摘要翻译: 含有选自铂(Pt),铑(Rh),钌(Ru),铱(Ir),锇(Os)等贵金属的一种或两种以上贵金属的废气净化催化剂, 钨(W)金属或氧化钨中的至少一种和任选的铌(Nb)金属,氧化铌,钼(Mo)金属或氧化钼中的至少一种,并且还可以含有金属氧化物二氧化铈 和/或氧化锆,特别适用于清除排气中的碳氢化合物。