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DPF 장착 경유승용차의 재생시 미세입자 배출특성 연구
권상일(Sang-Il Kwon),김종춘(Jong-Choon Kim),박용희(Yong-Hee Park),이창식(Chang-Sik Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Nano-Particles is main subject in health effect. The relationships between transient vehicle operation and nano-particle emissions are not well-known, especially for diesel passenger vehicle with DPF. In this study, a diesel passenger vehicles were measured on a chassis dynamometer test bench with and without DPF regeneration. The particulate matter (PM) emissions of these vehicles were investigated by number, size and mass measurement. The mass of the total PM was evaluated using the standard gravimetric measurement method, the total number and size concentrations were measured on a NEDC driving cycle using Condensation Particle Counter (CPC) and EEPS. Total number concentration by CPC was 1.5×10¹¹N/㎞ and was 20% of result by EEPS. This means about 80% of total particle emission is compromise of volatile and small-size particle(<22㎚). In regeneration, particle emission was 6.2×10¹²N/㎞ and was emitted 400 times compared to without regeneration. and particle of 22~100㎚ size was emitted mainly, showed peak value nearby 40㎚ size. This means regeneration decreased mean size of particle. In before and after regeneration, PM showed no change but particle number showed about 6 times difference. The regeneration influence on particle number emissions is believed to be related to DPF-fill state and filtration efficiency.
연료분무 및 연소 1 : 연식에 따른 CNG 및 경유버스 오염물질 배출특성 비교
권상일 ( Sang Il Kwon ),박용희 ( Yong Hee Park ),이종태 ( Jong Tae Lee ) 한국액체미립화학회 2013 한국액체미립화학회 학술강연회 논문집 Vol.2013 No.-
CNG buses have been spread instead of diesel buses in Korea due to the clean exhaust gas emission expecially in terms of PM. But recently diesel engine technology has been improved dramatically and the emission regulation is also more stringent over the past ten years. Therefore the comparison study between CNG and Diesel Bus has been needed for the analysis of environmental effect on the CNG bus. In this study experimental comparison was performed on the CNG and diesel bus by model year. Chassis dynamometer test was performed for measurement of CO, HC, NOx, PM, PN, CO2 and fuel consumption. Test mode was used NIER 06 mode represented city bus driving conditon in Korea very well. From the mode test, CNG bus shows its advantage in terms of emission respectively compared to diesel bus in spite of stringent emission standard of diesel bus.
바이오디젤 사용에 따른 경유승용차의 미세입자 배출특성 연구
권상일(Sang-Il Kwon),김종춘(Jong-Choon Kim),박용희(Yong-Hee Park),임철수(Cheol-Soo Lim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, lots of researchers have been attracted to develope various alternative fuels and to use renewable fuels as a solution of environmental problems from automobile. and nano-Particles is main subject in health effect. The relationships between transient vehicle operation and nano-particle emissions are not well-known, especially for using biodiesel fuel. In this study, we have been performed experimental test for the exhaust emission and nano particle reduction characteristics by mixed ratio of biodiesel and analyzed the regulated biodiesel components. The particulate matter (PM) emissions were investigated by number and mass measurement. The mass of the total PM was evaluated using the standard gravimetric measurement method, the total number concentrations were measured on a ECE 15+EUDC driving cycle using Condensation Particle Counter (CPC). Total PM was reduced 2 -38% and number concentration was reduced ]-27% by mixed ratio of biodiesel. Total PM was reduced more than particle because volatile particle was measured in Total PM but was not measured in particle.
DPF 장착에 따른 경유승용차의 미세입자 배출특성 연구
권상일(Sang-Il Kwon),김종춘(Jong-Choon Kim),박용희(Yong-Hee Park),이창식(Chang-Sik Lee) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
Nano-Particles is main subject in health effect. The relationships between transient vehicle operation and nano-particle emissions are not well-known, especially for diesel passenger vehicle with DPF. In this study, two diesel passenger vehicles were measured on a chassis dynamometer test bench. The particulate matter (PM) emissions of these vehicles were investigated by number and mass measurement. The mass of the total PM was evaluated using the standard gravimetric measurement method, the total number concentrations were measured on a ECE15+EUDC driving cycle using Condensation Particle Counter (CPC). Total number concentration was 1.141011 and mass concentration was 0.71㎎/㎞. About 99% of total number concentrations was emitted during the 0400s because of engine cold condition. In high temperature and high speed duration, the particulate matter was increased but particle concentration '-vas emitted not yet except initial engine cold condition According to DPF performance deterioration, the particulate matter was emitted 2 times and particle concentration was emitted 32 times. Then DPF performance deterioration affects more particle concentration than PM.
권상일 ( Sang Il Kwon ),박용희 ( Yong Hee Park ) 한국분무공학회 2012 한국액체미립화학회지 Vol.17 No.3
This study was primarily focused on the experimental comparison of the particle emission characteristics for heavy duty engine. PM and particle number from various heavy duty engines and DPF type were analyzed with a golden particle measurement system recommended by the Particle Measurement Program. And the repeatability and reproducibility between test mode was analyzed. This study was conducted for the experimental comparison on particulate emission characteristics between the European and World-Harmonized test cycles for a heavy-duty diesel engine. To verify the particulate mass and particle number concentrations from various operating modes, ETC/ESC and WHTC/WHSC, both of which will be enacted in Euro VI emission legislation, were evaluated. Real-time particle formation of the transient cycles ETC and WHTC were strongly correlated with engine operating conditions and after-treatment device temperature. A higher particle number concentration during the ESC mode was ascribed to passive DPF regeneration and the thermal release of low volatile particles at high exhaust temperature conditions.