Zobrazeno 1 - 10
of 30
pro vyhledávání: '"David Quiros"'
Publikováno v:
Emission Control Science and Technology. 7:41-55
Measurement methods for vehicle-emitted particulate matter (PM) have evolved as vehicle emission standards have become more stringent. For example, the filter-based gravimetric method has been demonstrated feasible to measure emissions at levels belo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec74fc05876570c0d8cea7dd1158a3a1
https://doi.org/10.1007/s40825-020-00179-7
https://doi.org/10.1007/s40825-020-00179-7
Autor:
David Quiros, Tao Huai, Mark Burnitzki, Jeremy D. Smith, Harry A. Dwyer, Shaohua Hu, Robert Ianni, Don Chernich, Wayne Sobieralski, Christopher R. Ruehl, John F. Collins
Publikováno v:
Science of The Total Environment. 680:132-139
Periodic regeneration is required to clean the diesel particulate filter (DPF) of heavy-duty diesel vehicle. In this study we analyze real-time particulate matter (PM) mass, particle number, and black carbon emissions during steady state driving acti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4a700e773e1f66e8dc47c434257eb69
https://doi.org/10.1016/j.scitotenv.2019.04.447
https://doi.org/10.1016/j.scitotenv.2019.04.447
Publikováno v:
Chemosphere, vol 229
Increasingly stringent particulate matter (PM) emission standards have brought forth engine design improvements, cleaner-burning fuels, and aftertreatment technologies. Reductions in tailpipe PM mass have concomitantly reduced accumulation-mode parti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e38ddc6130a08e0978ed268d48a78483
https://doi.org/10.1016/j.chemosphere.2019.05.010
https://doi.org/10.1016/j.chemosphere.2019.05.010
Autor:
David Quiros, Donald J. Chernich, Christopher R. Ruehl, Phuong Ho, Wayne Sobieralski, Renee Littaua, William H. Robertson, Robert Ianni
Publikováno v:
Emission Control Science and Technology. 4:279-288
Vehicle speed limiters (VSLs) are one of the strategies for reducing greenhouse gas (GHG) emissions from heavy-duty vehicles; they work by limiting peak vehicle speed. In the Federal Phase 2 Rule—GHG Emissions and Fuel Efficiency Standards for Medi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0e97fb00be197bb29fb9738297a836e
https://doi.org/10.1007/s40825-018-0103-9
https://doi.org/10.1007/s40825-018-0103-9
Autor:
David Quiros, Shaohua Hu, Walter Ham, Alberto Ayala, William H. Robertson, Tao Huai, Jeremy D. Smith
Publikováno v:
Journal of the Air & Waste Management Association. 68:969-987
Remote sensing devices have been used for decades to measure gaseous emissions from individual vehicles at the roadside. Systems have also been developed that entrain diluted exhaust and can also measure particulate matter (PM) emissions. In 2015, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58be7ee139f358a0709978168f819493
https://doi.org/10.1080/10962247.2018.1460637
https://doi.org/10.1080/10962247.2018.1460637
Autor:
John F. Collins, Mark Burnitzki, Jennifer Erin Shields, Christopher R. Ruehl, Robert Ianni, Yilin Ma, Harry Dwyer, Shaohua Hu, Seungju Yoon, Jeremy D. Smith, Donald J. Chernich, David Quiros, Wayne Sobieralski, M.-C. Oliver Chang
Publikováno v:
Environmental Science & Technology. 52:5868-5874
Recent tightening of particulate matter (PM) emission standards for heavy-duty engines has spurred the widespread adoption of diesel particulate filters (DPFs), which need to be regenerated periodically to remove trapped PM. The total impact of DPFs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35c0df4b821ab6bd4f0b043d46e0829e
https://doi.org/10.1021/acs.est.7b05633
https://doi.org/10.1021/acs.est.7b05633
Publikováno v:
Atmospheric Environment. 168:36-45
Heavy-duty on-road vehicles account for 70% of all freight transport and 20% of transportation-sector greenhouse gas (GHG) emissions in the United States. This study measured three prevalent GHG emissions – carbon dioxide (CO 2 ), methane (CH 4 ) a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9657a95c115c21543c874f0446df57d8
https://doi.org/10.1016/j.atmosenv.2017.08.066
https://doi.org/10.1016/j.atmosenv.2017.08.066
Autor:
Shaohua Hu, Saroj Pradhan, Tao Huai, Eon S. Lee, David Quiros, Tianyang Wang, Arvind Thiruvengadam, Yifang Zhu
Publikováno v:
Environmental Science & Technology. 51:6990-6998
Particle emissions from heavy-duty vehicles (HDVs) have significant environmental and public health impacts. This study measured total particle number emission factors (PNEFs) from six newly certified HDVs powered by diesel and compressed natural gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::deb6c77de221df950f4437a205bf6808
https://doi.org/10.1021/acs.est.6b06464
https://doi.org/10.1021/acs.est.6b06464
Autor:
Arvind Thiruvengadam, Francisco Posada, Shaohua Hu, Pragalath Thiruvengadam, Marc Besch, Berk Demirgok, Saroj Pradhan, David Quiros
Publikováno v:
Atmospheric Environment. 252:118294
This study presents an analysis of real-world emissions from two heavy-duty trucks using the Not-To-Exceed (NTE) and the European based Work-Based-Window (WBW) methodologies. The study also presents a sensitivity analysis of the NTE and WBW approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48f9451c0c000953cafa913a1405f2e7
https://doi.org/10.1016/j.atmosenv.2021.118294
https://doi.org/10.1016/j.atmosenv.2021.118294
Autor:
Kent C. Johnson, Georgios Karavalakis, Yang Li, Heejung Jung, Shaohua Hu, Tao Huai, Thomas D. Durbin, Xiaoliang Wang, Jian Xue, Alberto Ayala, David Quiros
Publikováno v:
Aerosol Science and Technology, vol 50, iss 11
Integrated particle size distribution (IPSD) is a promising alternative method for estimating particulate matter (PM) emissions at low levels. However, a recent light-duty vehicle (LDV) emissions study showed that particle mass estimated using IPSD (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fea45b801ea96117e0e13b7f84a07f44
https://doi.org/10.1080/02786826.2016.1239247
https://doi.org/10.1080/02786826.2016.1239247