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    SENSORELEMENT FÜR EINEN GASSENSOR
    1.
    发明公开
    SENSORELEMENT FÜR EINEN GASSENSOR 审中-公开
    传感器元件用于气体传感器

    公开(公告)号：EP1834176A1

    公开(公告)日：2007-09-19

    申请号：EP05823653.0

    申请日：2005-12-14

    申请人： ROBERT BOSCH GMBH

    发明人： HACHTEL, Andreas ,  HEIMANN, Detlef ,  SCHWEGLER, Leonore ,  DIEHL, Lothar ,  MOSER, Thomas ,  SINDEL, Jürgen ,  KRISTOFFERSSON, Annika ,  KOWOL, Frank ,  REISS, Jürgen ,  ZAEGEL, Didier ,  BUSE, Frank

    IPC分类号： G01N27/407

    CPC分类号： G01N27/4071 ,  G01N27/4072

    摘要： The invention relates to a sensor element for a gas sensor for determining the physical property of a test gas, particularly the concentration of a gas constituent in the exhaust gas of internal combustion engines. The sensor element comprises an, in particular, laminated ceramic body (11) with a test gas space (12) that is in contact with the test gas via a diffusion barrier (21). In order to obtain a gas permeability of the diffusion barrier (21) that is necessary for a controlled gas diffusion within narrow manufacturing tolerance limits so that a subsequent trimming or calibration of the manufactured sensor element can be eliminated, cavities are formed in the diffusion barrier (21) in a defined geometric order. The cavities are preferably provided in the form of fine branched channels (30) on the scale of micrometers that, due to their shape and arrangement, enable the desired gas permeability to be determined in a highly precise manner.

    SENSORELEMENT
    2.
    发明公开
    SENSORELEMENT 审中-公开
    传感器元件

    公开(公告)号：EP1728071A1

    公开(公告)日：2006-12-06

    申请号：EP05707980.8

    申请日：2005-02-09

    申请人： ROBERT BOSCH GMBH

    发明人： SCHMITT, Reiner ,  WAHL, Thomas ,  GUENSCHEL, Harald ,  BRAUN, Harry ,  TIEFENBACH, Andy ,  EISELE, Ulrich ,  DIEHL, Lothar ,  MOSER, Thomas ,  RODEWALD, Stefan ,  LINDAUER, Dieter ,  SINDEL, Jürgen ,  RADY, Dirk ,  BUCHHOLZ, Frank

    IPC分类号： G01N27/407

    CPC分类号： G01N27/4071

    摘要： The invention relates to a sensor element (10) serving, in particular, for detecting a gas component in a test gas, preferably for determining the oxygen concentration in an exhaust gas of an internal combustion engine. The sensor element (10) comprises a strip conductor (101), which is applied to a solid electrolyte (21, 22) and which has an electrode (101a) provided in a measuring area (11) of the sensor element (10), and an electrode supply (101b) leading to the electrode (101a) and being situated in a supply area (12) of the sensor element (10). A heating element (51) is provided for heating the measuring area (11) of the sensor element (10). The strip conductor (101) comprises a narrowing (60) in a transition area (13) between the measuring area (11) and the supply area (12). In addition, the electrode (101a) comprises a first electrode section (81) and a second electrode section (82). The first electrode section (81) is, in a transition area (13) between the measuring area (11) and the supply area (12), connected to the electrode supply (101b), and the first and second electrode sections (81, 82) are electrically connected to one another only on their sides situated opposite the supply area (12).

    VERFAHREN ZUR SPANNUNGSGESTEUERTEN LEISTUNGSEINSTELLUNG DER HEIZUNG EINER ABGASSONDE
    5.
    发明公开
    VERFAHREN ZUR SPANNUNGSGESTEUERTEN LEISTUNGSEINSTELLUNG DER HEIZUNG EINER ABGASSONDE 有权
    方法压控功率设置瓦斯探头的加热

    公开(公告)号：EP1853807A1

    公开(公告)日：2007-11-14

    申请号：EP06707876.6

    申请日：2006-01-27

    申请人： ROBERT BOSCH GMBH

    发明人： WAHL, Thomas ,  STRASSNER, Walter ,  DIEHL, Lothar ,  RODEWALD, Stefan ,  SINDEL, Jürgen

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1494

    摘要： The invention relates to a method for the voltage-controlled performance regulation of the heating of an exhaust-gas probe in the exhaust system of an internal combustion engine. The aim of the invention is to provide a method in which the operating temperature of the probe is achieved in the shortest possible time without damage to the probe. To achieve this, the heating voltage during the heating phase of the probe is rapidly brought up to a high temperature in a start phase in relation to a subsequent phase, or a dramatic leap in temperature is achieved, preferably up to the full operating voltage and the heating voltage is then continuously or quasi-continuously reduced.