TY - JOUR
T1 - High-accuracy Nanoparticle Sensor for Combustion Engine Exhaust Gases
AU - Kraft, M.
AU - Kaczynski, J.
AU - Reinisch, T.
AU - Unger, M.
AU - Bergmann, A.
PY - 2016
Y1 - 2016
N2 - Nanoparticles are one indispensable analyte in the characterisation of any combustion engine or exhaust aftertreatment system. To improve the presently prevalently used condensation nucleus magnification-based particle counters (CNC) in performance and footprint, a dedicated, comprehensive all-in-one CFD model was developed. Following experimental validation, the model was successfully used to simulate and better comprehend the internal functionings of the present standard system, identify critical design parameters and develop a new, improved sensor system design. The ensuing improved CNC nanoparticle sensor is now based on a vertical, annular design. Besides being highly compact, the new layout yields an almost perfectly homogenous (super-)saturation of the aerosol stream and superior temperature control of all relevant components. This gives the new design a uniquely high discriminatory power by nanoparticle diameter, a precise controllability of the effective particle detection cut-on size and a significant reduction in the effective particle losses in the sensor.
AB - Nanoparticles are one indispensable analyte in the characterisation of any combustion engine or exhaust aftertreatment system. To improve the presently prevalently used condensation nucleus magnification-based particle counters (CNC) in performance and footprint, a dedicated, comprehensive all-in-one CFD model was developed. Following experimental validation, the model was successfully used to simulate and better comprehend the internal functionings of the present standard system, identify critical design parameters and develop a new, improved sensor system design. The ensuing improved CNC nanoparticle sensor is now based on a vertical, annular design. Besides being highly compact, the new layout yields an almost perfectly homogenous (super-)saturation of the aerosol stream and superior temperature control of all relevant components. This gives the new design a uniquely high discriminatory power by nanoparticle diameter, a precise controllability of the effective particle detection cut-on size and a significant reduction in the effective particle losses in the sensor.
KW - automotive exhaust analysis
KW - condensation nucleus counter
KW - nanoparticle sensor
KW - system design
KW - system simulation
UR - http://www.scopus.com/inward/record.url?scp=85009997139&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2016.11.129
DO - 10.1016/j.proeng.2016.11.129
M3 - Article
AN - SCOPUS:85009997139
SN - 1877-7058
VL - 168
SP - 35
EP - 38
JO - Procedia Engineering
JF - Procedia Engineering
ER -