| 摘要 |
#CMT# #/CMT# The method involves evaluating resistance change and/or impedance change between electrodes (12, 13) e.g. comb electrodes, inside a measuring interval between regeneration phases of a particle sensor (10) for determining particle content. The particle sensor is periodically and alternatively operated in collecting phases and in measuring phases during the measuring interval. Different voltages and/or voltage forms are applied to the electrodes during the collecting phases and the measuring phases. The sensor is operated with direct current voltage in the collecting phases. #CMT#USE : #/CMT# Method for operating a particle i.e. soot particle, sensor for determining soot particle content in an exhaust gas system of an internal combustion engine (claimed) i.e. diesel engine, monitoring carbon-particulate emission of the combustion engine and function of particulate filters, in a motor vehicle workshop for monitoring exhaust gas limit value in exhaust gas flow of a heating system or for pollution measurements. #CMT#ADVANTAGE : #/CMT# The particle sensor is periodically and alternatively operated in collecting phases and in measuring phases during the measuring interval, and the different voltages and/or voltage forms are applied to the electrodes during the collecting phases and the measuring phases, thus allowing accurate determination of particle accretion on the particle sensor in optimized conditions for depositing the particle from the exhaust gas flow to the particle sensor. The method enables accurate and reliable determination of loading condition of the particle sensor. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a side view of a section of a particle sensor. 10 : Particle sensor 11 : Insulating carrier 12, 13 : Electrodes 16 : Heating element 17 : Protective layer 18 : Particles. |
