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    • 1. 发明申请
    • METHOD FOR DETECTING PARTICLES IN A GAS STREAM AND DETECTOR
    • 检测气流中颗粒的方法及其传感器
    • WO03034053A3
    • 2003-10-09
    • PCT/DE0203779
    • 2002-10-08
    • BOSCH GMBH ROBERTSPRENGER BERNHARDWAHL THOMASPFENDTNER REINHARDBRINZ THOMASBALDENHOFER KAIGRAU THOMAS
    • SPRENGER BERNHARDWAHL THOMASPFENDTNER REINHARDBRINZ THOMASBALDENHOFER KAIGRAU THOMAS
    • G01N15/06G01N27/92G01N27/70
    • G01N15/0656G01N27/92
    • The invention concerns a detector and a method for detecting particles in a gas stream, in particular of soot in an exhaust gas stream. Said detector comprises first and second electrodes, an electric voltage capable of being applied between the first electrode and the second electrode such that a gas discharge can be stimulated at least intermittently between the electrodes. The invention is characterized in that at least a dielectric layer (116; 138, 140) is interposed between the first electrode (2; 11; 112; 134) and the second electrode (3; 13; 114; 136) so that the electric discharge produced between the two electrodes is systematically dielectric hindered and the two electrodes are connected to a device for measuring an electric current or electric discharge pulses, so that the variation of an electrical measurement signal provides an indication of the density of particles in the gas stream based on the particles in the dielectric hindered discharge zone.
    • 有一个传感器和用于在气流中探测粒子,在所建议的废气流特定的烟灰粒子的方法,其具有至少一个第一和至少一个第二电极,其中可以在第一电极和第二电极之间施加电压, 使得至少有时,在电极之间的气体放电可被激发,其中,在所述第一电极(2; 11; 112; 134)和第二电极(3; 13; 114; 136)的至少一个电介质层(116; 138,140 )被布置成使得所述beinden电极之间的放电只能介电阻挡,而且这两个电极连接到一个装置,用于测量电流或放电脉冲,从而使所得到的电测量信号的响应于变化 位于介质阻挡放电领域 颗粒可以用作气流中颗粒密度的量度。