Open loop fuel controller
    1.
    发明授权
    Open loop fuel controller 失效
    开环燃油控制器

    公开(公告)号:US07100364B2

    公开(公告)日:2006-09-05

    申请号:US10633117

    申请日:2003-08-01

    IPC分类号: F01N3/00

    摘要: This invention relates to an apparatus for controlling the air-fuel ratio demanded by a fuel controller in order to maintain optimum performance of a catalytic converter. Provided is an open loop fuel controller comprising a detector arranged down stream of a catalyst for detecting rich breakthrough; a catalyst model having an estimator for estimating a stored oxygen level in the catalyst; a comparator for comparing an estimated stored oxygen level with a plurality of predetermined thresholds; demand adjusting means for adjusting an air fuel ratio demand in dependence upon a received signal from said comparator and upon a received signal from said detector. A method of open loop fuel control is also provided.

    摘要翻译: 本发明涉及一种用于控制由燃料控制器要求的空燃比以便维持催化转化器的最佳性能的装置。 提供了一种开环燃料控制器,其包括设置在催化剂下游的检测器,用于检测丰富的突破; 催化剂模型,其具有用于估计催化剂中存储的氧气水平的估计器; 比较器,用于将估计存储的氧气水平与多个预定阈值进行比较; 需求调节装置,用于根据来自所述比较器的接收信号和来自所述检测器的接收信号来调整空燃比要求。 还提供了开环燃料控制的方法。

    Capped tubes
    2.
    发明申请
    Capped tubes 审中-公开
    上盖管

    公开(公告)号:US20070104617A1

    公开(公告)日:2007-05-10

    申请号:US11267202

    申请日:2005-11-04

    IPC分类号: B01L3/00

    摘要: In a first aspect the present invention provides a screw-capped tube for holding a liquid material therein, the tube having an open mouth at one end only which is adapted to be closed by the screw cap with an inner end of the screw cap extending into the open mouth of the tube, an opposing end of the cap to the inner end of the cap being provided with a circular cylindrical recess extending thereinto and whereof the cylindrical wall of the recess is free of splines, an outer circumferential surface of the cap being provided with a spline whereby the cap is adapted to co-operatively engage with a spline of a tool that will fit on to said opposite end of the cap for rotation of the cap by co-operative engagement of the spline of the tool with the spline of the cap. This arrangement increases versatility and ease in de-capping and re-capping of the tubes. Further aspects also assist with this and/or improve seal efficiency and help to avoid the need for O ring sealing for cryogenic uses and other uses.

    摘要翻译: 在第一方面,本发明提供了一种用于将液体材料保持在其中的螺旋盖管,该管在一端具有开口,仅适于由螺帽封闭,螺帽的内端延伸到 管的开口,帽的与帽的内端相对的端部设置有延伸到其中的圆形圆柱形凹部,并且凹部的圆柱形壁没有花键,帽的外圆周表面是 设置有花键,由此所述盖适于与工具的花键共同操作地接合,该工具的花键将适合于所述帽的所述相对端,以通过所述工具的花键与所述花键的共同接合来旋转所述帽 的帽子。 这种布置增加了多孔性,并且容易地对管的去盖和再封盖。 其他方面也有助于此和/或提高密封效率,并有助于避免对低温用途和其它用途的O型圈密封的需要。