A comparison of a mini-PEMS and a 1065 compliant PEMS for on-road gaseous and particulate emissions from a light duty diesel truck.
Jiacheng Yang,Thomas D. Durbin,Yu Jiang,Takeshi Tange,Georgios Karavalakis,David R. Cocker,Kent C. Johnson +6 more
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TLDR
There could be applications for the NCEM or other mini-PEMS for applications such as identification of potential issues by regulatory agencies, manufacturer evaluation and validation of emissions under in-use conditions, and potential use in inspection and maintenance (I/M) programs, especially for heavy-duty vehicles.About:
This article is published in Science of The Total Environment.The article was published on 2018-11-01 and is currently open access. It has received 13 citations till now.read more
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Solid Particle Number (SPN) Portable Emissions Measurement Systems (PEMS) in the European Legislation: A Review.
TL;DR: This paper gives an overview of the studies for SPN-PEMS from early 2013 with the first prototypes until the latest testing and improvements in 2019, and addresses measurement uncertainty at the on-road emission results measured with PEMS.
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On-road gaseous and particulate emissions from GDI vehicles with and without gasoline particulate filters (GPFs) using portable emissions measurement systems (PEMS)
Cavan McCaffery,Hanwei Zhu,Chengguo Li,Thomas D. Durbin,Kent C. Johnson,Heejung Jung,Rasto Brezny,Michael R. Geller,Georgios Karavalakis,Georgios Karavalakis +9 more
TL;DR: The results showed strong reductions in particulate mass (PM), soot mass, and particle number emissions with the use of GPFs, and nitrogen oxide (NOx) emissions showed improvements with the catalyzed GPFs in the underfloor position with the additional catalytic volume.
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An interdisciplinary review on calibration strategies of engine management system for diverse alternative fuels in IC engine applications
Ashwin Jacob,B. Ashok +1 more
TL;DR: An advanced calibration methodology is proposed for flex-fuel engines in this study based on the knowledge gained through the preparation of this article and complex optimizers like neural networks can be used in the proposed methodology to initiate real-time calibration for ideal flex- fuel engine output responses.
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Particle number emissions from light-duty gasoline vehicles in Beijing, China.
TL;DR: It is found the PN emission factors (EFs) of port fuel injection (PFI) vehicles have declined considerably under stricter standards, and the optimal upper limit of the primary dilution ratio should be further studied and specified as a standard.
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Comparative Effects of Olefin Content on the Performance and Emissions of a Modern GDI Engine
TL;DR: The effects of different olefin contents in fuel (nominally 8.2 and 17.2% in volume) on the performance and exhaust emissions of a modern gasoline direct injection engine at speeds of 1500, 3500, a...
References
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Journal ArticleDOI
Very low particle matter mass measurements from light-duty vehicles
Jian Xue,Kent C. Johnson,Tom Durbin,R. Robert Russell,Liem Pham,Wayne Miller,Jacob Swanson,David B. Kittelson,Heejung Jung +8 more
TL;DR: In this paper, a series of modifications were made to the existing gravimetric PM measurement method, aiming to preserve the integrity of the method while increasing the robustness and decreasing the testing variability.
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A New Miniaturized Sensor for Ultra-Fast On-Board Soot Concentration Measurements
Antti Rostedt,Leonidas Ntziachristos,Pauli Simonen,Topi Rönkkö,Zissis Samaras,Risto Hillamo,Kauko Janka,Jorma Keskinen +7 more
Journal ArticleDOI
Uncertainty in Gravimetric Analysis Required for LEV III Light-Duty Vehicle PM Emission Measurements
Jacob Swanson,Liem Pham,Jian Xue,Tom Durbin,R. Robert Russell,Wayne Miller,David B. Kittelson,Heejung Jung,Kent C. Johnson +8 more
TL;DR: In this article, Swanson, Jacob, Pham, Liem, Xue, Jian, Durbin, Tom; Russell, Robert; Miller, Wayne; Kittelson, David; Jung, Heejung; Johnson, Kent