scispace - formally typeset
Search or ask a question
Author

Massimo Carriero

Bio: Massimo Carriero is an academic researcher. The author has contributed to research in topics: Diesel fuel & NOx. The author has an hindex of 12, co-authored 16 publications receiving 489 citations.

Papers
More filters
Journal ArticleDOI
TL;DR: In this article, the authors analyzed the gaseous emissions of one novel Euro 6 diesel car and six Euro 4-5 diesel cars with Portable Emissions Measurement Systems (PEMS).

203 citations

Journal ArticleDOI
TL;DR: The results of the present study show that retrofitting high emitting vehicles can significantly reduce vehicle NOx emissions and ultimately pollution in cities.

39 citations

Journal ArticleDOI
TL;DR: In this article, the performance of three Portable Emission Measurement Systems (PEMS) for Particulate Matter (PM) was assessed in a laboratory against reference instrumentation in engine dynamometer testing of five Heavy Duty Engines of different aftertreatment technologies.

38 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: In this paper, a review examines current understanding of the processes regulating tropospheric ozone at global to local scales from both measurements and models and takes the view that knowledge across the scales is important for dealing with air quality and climate change in a synergistic manner.
Abstract: Ozone holds a certain fascination in atmospheric science. It is ubiquitous in the atmosphere, central to tropospheric oxidation chemistry, yet harmful to human and ecosystem health as well as being an important greenhouse gas. It is not emitted into the atmosphere but is a by-product of the very oxidation chemistry it largely initiates. Much effort is focussed on the reduction of surface levels of ozone owing to its health impacts but recent efforts to achieve reductions in exposure at a country scale have proved difficult to achieve due to increases in background ozone at the zonal hemispheric scale. There is also a growing realisation that the role of ozone as a short-lived climate pollutant could be important in integrated air quality climate-change mitigation. This review examines current understanding of the processes regulating tropospheric ozone at global to local scales from both measurements and models. It takes the view that knowledge across the scales is important for dealing with air quality and climate change in a synergistic manner.

877 citations

Journal ArticleDOI
TL;DR: In this paper, a review of the techniques used to measure road vehicle emissions are examined in relation to the development of emission factors found in emission models used to produce emission inventories.

433 citations

Journal ArticleDOI
Timothy V. Johnson1
TL;DR: Johnson et al. as discussed by the authors summarized major developments in vehicular emissions regulations and technologies in 2013 and gave a brief, high-level overview of key developments in fuels, focusing on low-temperature deNOx and integration of components and control.
Abstract: The review paper summarizes major developments in vehicular emissions regulations and technologies in 2013. First, the paper covers the key regulatory developments in the field, including proposed light-duty (LD) criteria pollutant tightening in the US; and in Europe, the continuing developments towards real-world driving emissions (RDE) standards. Significant shifts are occurring in China and India in addressing their severe air quality problems. The paper then gives a brief, high-level overview of key developments in fuels. Projections are that we are in the early stages of oil supply stability, which could stabilize fuel prices. LD and HD (heavy-duty) engine technology continues showing marked improvements in engine efficiency. Key developments are summarized for gasoline and diesel engines to meet both the emerging NOx and GHG regulations. HD engines are or will soon be demonstrating 50% brake thermal efficiency using common approaches. NOx control technologies are then summarized, including SCR (selective catalytic reduction) systems and SCR filter developments. Emphasis is on low-temperature deNOx and integration of components and control. Diesel PM (particulate matter) reduction technologies are evolving around the behavior of ash deposits and SCR integration. Filters for direct injection gasoline applications are developing very rapidly, and in some cases the back pressure, light-off characteristics, and emissions reductions are very similar to standard three way catalysts (TWCs). Oxidation catalysts mainly involve developments towards stubborn problems, like low-temperature performance with exhaust with high hydrocarbon and CO, and methane oxidation. Finally, the paper discusses some key developments in gasoline gaseous emission control, focusing on matching engine calibration with emissions system characteristics; and on lean burn gasoline emissions control. CITATION: Johnson, T., "Vehicular Emissions in Review," SAE Int. J. Engines 7(3):2014, doi:10.4271/2014-01-1491. 2014-01-1491 Published 04/01/2014 Copyright © 2014 SAE International doi:10.4271/2014-01-1491 saeeng.saejournals.org 1207 This paper is posted on this website with permission from SAE International. It may not be shared, downloaded, duplicated, or transmitted in any manner without prior written permission from SAE.

365 citations

Journal ArticleDOI
TL;DR: A review of vehicle exhaust particulate emission measurements can be found in this article, where the focus is on current and newly evolving instrumentation, including gravimetric filter measurement, chemical analysis of filters, light extinction, scattering and absorption instruments, and instruments based on the electrical detection of exhaust aerosols.

249 citations