Method for regenerating sensor utilized for detecting particles in exhaust line of e.g. diesel engine, of motor car, involves heating electrodes during time period to temperature, and maintaining temperature for another time period

摘要

#CMT# #/CMT# The method involves creating or maintaining an electric field between two electrodes (12, 14) of a sensor (10) that is utilized for resistive detecting of particles. The electrodes are heated during a first time period to temperature, which corresponds to oxidization temperature of a soot particle (18). The temperature is maintained for a second time period. The electrodes are heated during a third time period to another temperature, where the latter temperature is greater than the former temperature. The latter temperature is maintained for a fourth time period. #CMT# : #/CMT# A time period ranging from 5s to 20 s is selected as the first time period. A time period ranging from 0s to 10s is selected as the second time period. A time period ranging from 1s to 15s is selected as the third time period. A time period ranging from 5s to 30s is selected as the fourth time period. Temperature ranging from 450 degree Celsius to 650 degree Celsius is utilized as the first temperature. Temperature above 650 degree Celsius is utilized as the second temperature. #CMT#USE : #/CMT# Method for regenerating a sensor that is utilized for detecting particles or solid particles such as soot, ash and dust particles, in exhaust gas of an exhaust line of an internal combustion engine i.e. diesel engine of a motor car. #CMT#ADVANTAGE : #/CMT# The method enables minimizing ash of the particle sensor, optimizing a regeneration process, and regenerating the sensor in a time-saving, energy-saving and inexpensive manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic side view of a sensor with attached particles. 10 : Sensor 12, 14 : Electrodes 16 : Substrate 18 : Soot particle 20 : Ash particle 22 : Particle bridge.