Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Christopher R. Ruehl"'
Autor:
Christopher R. Ruehl, Tao Huai, Jorn D. Herner, Sharon Lemieux, Elena Florea, Seungju Yoon, Shaohua Hu, Tom Montes, Paul Henderick, Yi Tan, William H. Robertson, Jenna Latt, Abraham Lee
Publikováno v:
Environmental Science & Technology. 55:13657-13665
This work evaluated the nitrogen oxide (NOx) emissions of 277 heavy-duty diesel vehicles (HDDVs) from three portable emission measurement system testing programs. HDDVs in these programs were properly maintained before emission testing, so the malfun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::973cfcfae37e1cc99d1081454bd58ebf
https://doi.org/10.1021/acs.est.1c03042
https://doi.org/10.1021/acs.est.1c03042
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
Autor:
Tao Huai, Christopher R. Ruehl, Shaohua Hu, Mark Burnitzki, Jorn D. Herner, John F. Collins, Yi Tan, Chandan Misra, Jeremy D. Smith, Seungju Yoon
Over the past decade, efforts to reduce emissions of particulate matter (PM) and oxides of nitrogen (NO + NO2, or NOx) from heavy-duty diesel vehicles (HDDVs) have led to the widespread adoption of both Diesel Particulate Filters (DPFs) to control PM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d27f53d0489cda9331d94ae3926f5163
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:
Timothy H. Bertram, Christopher D. Cappa, Katharine Faber, Thomas M. Kuborn, Sean Staudt, Christopher R. Ruehl, Sara D. Forestieri
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 10985-11005 (2018)
Surface-active compounds present in aerosols can increase their cloud condensation nuclei (CCN) activation efficiency by reducing the surface tension (σ) in the growing droplets. However, the importance of this effect is poorly constrained by measur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4633e72194ad6f5f396e6f6cd1e11f3c
https://doi.org/10.5194/acp-18-10985-2018
https://doi.org/10.5194/acp-18-10985-2018
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:
Environmental Science & Technology. 51:6981-6989
The California Air Resources Board (ARB) and the City of Sacramento undertook this study to characterize the in-use emissions from model year (MY) 2010 or newer diesel, liquefied natural gas (LNG), and hydraulic hybrid diesel engines during real-worl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e113bbfee0f7ded00fe28d78b81239f5
https://doi.org/10.1021/acs.est.6b03218
https://doi.org/10.1021/acs.est.6b03218
Autor:
Thomas D. Durbin, Christopher R. Ruehl, Jorn D. Herner, Kanok Boriboonsomsin, Sonya Collier, Seungju Yoon, George Scora, Kent C. Johnson
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board, vol 2673, iss 3
Activity data from 79 line-haul and vocational trucks were analyzed to estimate trip-averaged fuel consumption per distance driven and per work performed. The 79 trucks had engine model years ranging from 2008 to 2015 and average (±standard deviatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6feedb2d2b3a0e553587a85e62e742ee
https://escholarship.org/uc/item/41s2f1ch
https://escholarship.org/uc/item/41s2f1ch
Autor:
Georgios Karavalakis, Christopher R. Ruehl, Patrick Roth, Akua Asa-Awuku, Martin M. Shafer, Dagmara S. Antkiewicz, Thomas D. Durbin, David R. Cocker, Jiacheng Yang
Publikováno v:
The Science of the total environment. 650(Pt 1)
We assessed the physical, chemical and toxicological characteristics of particulate emissions from four light-duty gasoline direct injection vehicles when operated over the LA92 driving cycle. Our results showed that particle mass and number emission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c7fbd7fcf692292077c3eea40f9a37e
https://pubmed.ncbi.nlm.nih.gov/30308806
https://pubmed.ncbi.nlm.nih.gov/30308806
Autor:
Sara D. Forestieri, Sean M. Staudt, Thomas M. Kuborn, Katharine Faber, Christopher R. Ruehl, Timothy H. Bertram, Christopher D. Cappa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71fc9f333ce4e28c5a4422b505f40b59
https://doi.org/10.5194/acp-2018-207-supplement
https://doi.org/10.5194/acp-2018-207-supplement