Application and performance test of a micro-machined unipolar charger for real-time measurements of exhaust particles from a diesel engine vehicle

Sang Gu Lee; Junho Hyun; Dongho Park; Jungho Hwang; Yong Jun Kim

doi:10.1016/j.jaerosci.2011.07.003

Application and performance test of a micro-machined unipolar charger for real-time measurements of exhaust particles from a diesel engine vehicle

Sang Gu Lee, Junho Hyun, Dongho Park, Jungho Hwang, Yong Jun Kim

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Characterization of particulate matter (PM) emitted from diesel vehicle exhaust requires a real-time measurement sensor to record particle concentrations under transient tests. Recently, a micro-machined unipolar charger (MUC) based on a micro-electromechanical system (MEMS) was introduced and evaluated to test aerosol particles on a laboratory scale. We present the performance characteristics of the MUC for its potential use as a sensor for diesel PM emissions. A correlation equation was derived from particle loss experiments and tandem differential mobility analyzer (TDMA) measurements in the laboratory, which was used to convert the current measurement datum into a total particle number concentration. Under various idling and driving conditions of a diesel vehicle, the electrical signals from the MUC were verified to have followed the trend of the total number concentrations of diesel PM measured using a condensation particle counter (CPC). When the diesel PM concentrations measured using the CPC were within the range of 2×10⁴-2×10⁵#/cm³, the total number concentrations, estimated using a correlation equation, were in agreement with the CPC data.

Original language	English
Pages (from-to)	747-758
Number of pages	12
Journal	Journal of Aerosol Science
Volume	42
Issue number	11
DOIs	https://doi.org/10.1016/j.jaerosci.2011.07.003
Publication status	Published - 2011 Nov

Bibliographical note

Funding Information:
This work was part of the “Development of Partial Zero Emission Technology for Future Vehicle” project funded by the Ministry of Commerce, Industry and Energy . The authors are grateful for this financial support.

All Science Journal Classification (ASJC) codes

Environmental Engineering
Pollution
Mechanical Engineering
Fluid Flow and Transfer Processes
Atmospheric Science

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10.1016/j.jaerosci.2011.07.003

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title = "Application and performance test of a micro-machined unipolar charger for real-time measurements of exhaust particles from a diesel engine vehicle",

abstract = "Characterization of particulate matter (PM) emitted from diesel vehicle exhaust requires a real-time measurement sensor to record particle concentrations under transient tests. Recently, a micro-machined unipolar charger (MUC) based on a micro-electromechanical system (MEMS) was introduced and evaluated to test aerosol particles on a laboratory scale. We present the performance characteristics of the MUC for its potential use as a sensor for diesel PM emissions. A correlation equation was derived from particle loss experiments and tandem differential mobility analyzer (TDMA) measurements in the laboratory, which was used to convert the current measurement datum into a total particle number concentration. Under various idling and driving conditions of a diesel vehicle, the electrical signals from the MUC were verified to have followed the trend of the total number concentrations of diesel PM measured using a condensation particle counter (CPC). When the diesel PM concentrations measured using the CPC were within the range of 2×104-2×105#/cm3, the total number concentrations, estimated using a correlation equation, were in agreement with the CPC data.",

author = "Lee, {Sang Gu} and Junho Hyun and Dongho Park and Jungho Hwang and Kim, {Yong Jun}",

note = "Funding Information: This work was part of the “Development of Partial Zero Emission Technology for Future Vehicle” project funded by the Ministry of Commerce, Industry and Energy . The authors are grateful for this financial support.",

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AU - Hwang, Jungho

AU - Kim, Yong Jun

N1 - Funding Information: This work was part of the “Development of Partial Zero Emission Technology for Future Vehicle” project funded by the Ministry of Commerce, Industry and Energy . The authors are grateful for this financial support.

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N2 - Characterization of particulate matter (PM) emitted from diesel vehicle exhaust requires a real-time measurement sensor to record particle concentrations under transient tests. Recently, a micro-machined unipolar charger (MUC) based on a micro-electromechanical system (MEMS) was introduced and evaluated to test aerosol particles on a laboratory scale. We present the performance characteristics of the MUC for its potential use as a sensor for diesel PM emissions. A correlation equation was derived from particle loss experiments and tandem differential mobility analyzer (TDMA) measurements in the laboratory, which was used to convert the current measurement datum into a total particle number concentration. Under various idling and driving conditions of a diesel vehicle, the electrical signals from the MUC were verified to have followed the trend of the total number concentrations of diesel PM measured using a condensation particle counter (CPC). When the diesel PM concentrations measured using the CPC were within the range of 2×104-2×105#/cm3, the total number concentrations, estimated using a correlation equation, were in agreement with the CPC data.

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Application and performance test of a micro-machined unipolar charger for real-time measurements of exhaust particles from a diesel engine vehicle

Abstract

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All Science Journal Classification (ASJC) codes

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