A Correlation Analysis of NOx Emissions for Driving Condition between PEMS and SEMS Devices

Jeong, Jun Woo; Sim, Inhan; Kim, Seung Lee; Yu, Young Soo; Chon, Mun Soo; Cha, Junepyo

doi:10.7467/ksae.2021.29.2.187

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…These various on-road driving variables affect the engine load of vehicle. As the engine load of the vehicle increases, NOx emissions increase, and the tolerance of NOx emissions measured by the two types of equipment increases [28]. For this reason, the slope of the on-road is lower than that of the chassis dynamometer.…”

Section: Correlation Of Nox Emissions Between the Pems And Sems Equipment On-roadmentioning

confidence: 99%

“…Accordingly, it was determined that NOx emissions measured by the SEMS equipment were higher than those measured by the PEMS equipment. However, the NOx sensor adopted in this study measures NH 3 emissions, and the measured NH 3 emissions are split into NO and H 2 O, owing to the chemical reaction [28]. As aforementioned, the split chemical equation of NH 3 emissions emerges accordingly.…”

Section: Correlation Of Nox Emissions Between the Pems And Sems Equipment On-roadmentioning

confidence: 99%

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NOx Emission of a Correlation between the PEMS and SEMS over Different Test Modes and Real Driving Emission

Jeong

Chon

et al. 2021

Energies

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The aim of this study is to verify the reliability of NOx emissions measured using Smart Emissions Measurement System (SEMS) equipment in comparison with the NOx emissions measured using certified Portable Emissions Measurement System (PEMS) equipment. The SEMS equipment is simple system, and it is less expensive than the PEMS equipment, as it comprises an On-Board Diagnostics (OBD) signal from the test vehicle and a NOx sensor. The SEMS equipment based on low-cost sensors has an advantage of building big data, but there are insufficient previous studies comparing of NOx emissions with certified the PEMS equipment. Therefore, this study is important in verifying the suitability of the SEMS equipment by comparing the NOx emissions measured by the various test modes and RDE using the two types of equipment. To analyze the correlation between the PEMS and SEMS equipment, the advanced diesel vehicle was equipped with the two types of equipment to simultaneously measure NOx emissions. After installing the equipment on the test vehicle, it was conducted under various test modes in the laboratory and the Real Driving Emission (RDE) test to verify the correlation of NOx emissions measured by the SEMS equipment. The correlation analysis for the NOx emissions measured by the PEMS and SEMS equipment under various test conditions and the RDE test indicated that the slope of the NOx emissions was approximately equal to 1, and the coefficient of determination was 0.9 or higher. Based on these test results, it was concluded that NOx emissions measured by the PEMS and SEMS equipment are highly similar.

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Section: Correlation Of Nox Emissions Between the Pems And Sems Equipment On-roadmentioning

confidence: 99%

Section: Correlation Of Nox Emissions Between the Pems And Sems Equipment On-roadmentioning

confidence: 99%

NOx Emission of a Correlation between the PEMS and SEMS over Different Test Modes and Real Driving Emission

Jeong

Chon

et al. 2021

Energies

Self Cite

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show abstract

Development of Real Operating Test Cycle for Tier-IV Construction Machineries with Emissions Characteristics

Song,

Chang,

Moon

et al. 2023

Int.J Automot. Technol.

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A Correlation Analysis of NOx Emissions for Driving Condition between PEMS and SEMS Devices

Cited by 2 publications

References 2 publications

NOx Emission of a Correlation between the PEMS and SEMS over Different Test Modes and Real Driving Emission

NOx Emission of a Correlation between the PEMS and SEMS over Different Test Modes and Real Driving Emission

Development of Real Operating Test Cycle for Tier-IV Construction Machineries with Emissions Characteristics

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