Energy factors for flexible fuel engines and vehicles operating with gasoline-ethanol blends

Noce, Toshizaemom; Silva, Rafael Rocha da; Morais, Rafael Pinho Senra de; Sales, Luís Carlos Monteiro; Hanriot, Sérgio de Morais; Sodré, José Ricardo

doi:10.1016/j.trd.2018.09.002

Cited by 6 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The growing concern surrounding the environmental impacts generated by the use of fossil fuel sources and global warming effects are causing an increasing interest in study and the optimization of the configurations of transport systems [1][2][3][4] and public transport network [5,6]. Planning urban rapid transit systems is a complex decision process that takes place over a long period and involves the participation of designers, engineers, politicians, and social committees.…”

Section: Introductionmentioning

confidence: 99%

Optimal Alignments for Designing Urban Transport Systems: Application to Seville

et al. 2019

View full text Add to dashboard Cite

The achievement of some of the Sustainable Development Goals (SDGs) from the recent 2030 Agenda for Sustainable Development has drawn the attention of many countries towards urban transport networks. Mathematical modeling constitutes an analytical tool for the formal description of a transportation system whereby it facilitates the introduction of variables and the definition of objectives to be optimized. One of the stages of the methodology followed in the design of urban transit systems starts with the determination of corridors to optimize the population covered by the system whilst taking into account the mobility patterns of potential users and the time saved when the public network is used instead of private means of transport. Since the capture of users occurs at stations, it seems reasonable to consider an extensive and homogeneous set of candidate sites evaluated according to the parameters considered (such as pedestrian population captured and destination preferences) and to select subsets of stations so that alignments can take place. The application of optimization procedures that decide the sequence of nodes composing the alignment can produce zigzagging corridors, which are less appropriate for the design of a single line. The main aim of this work is to include a new criterion to avoid the zigzag effect when the alignment is about to be determined. For this purpose, a curvature concept for polygonal lines is introduced, and its performance is analyzed when criteria of maximizing coverage and minimizing curvature are combined in the same design algorithm. The results show the application of the mathematical model presented for a real case in the city of Seville in Spain.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimal Alignments for Designing Urban Transport Systems: Application to Seville

et al. 2019

View full text Add to dashboard Cite

show abstract

“…In current years, the restructuring of the transport sector as a consequence of climate change on human living is assuming a fundamental role [1]- [6]. In 2015, the Member States of the United Nations committed to implement the 2030 Agenda for Sustainable Development.…”

Section: Introductionmentioning

confidence: 99%

Experimental Techniques and Numerical Models to Detect Pollutant Emission in the Transport Sector

Marseglia

Medaglia

Ortega

et al. 2019

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

In recent years, the growth of fossil fuel use and greenhouse gases emissions (GHGs) has been promoted by the population increase and development of the industry sector. Due to the increasing attention towards the effects of climate changes on quality of life, recent researches on pollutant formation processes have been developed in different sectors, especially in transportation. The last emission standards on pollutants impose limits on the dimensions and on the particle number of the particulate matter emissions, because of the highly dangerous effect on human health. To fight high concentrations of particulate matter (PM) emissions, a wide number of studies are addressed towards the definition of the most important parameters in effective production of particulate matter, especially in spark ignition engines. Physical processes such as mixture formation, engine operating parameters and fuel chemical properties strongly affect the soot formation in gasoline engines. The heat transfer process between the piston hot surface and the fuel gasoline during the post-injection phase is a key aspect of soot emissions for an engine. This paper is devoted to analyzing the fundamental parameters that are responsible for pollutant formation in the transport sector and the actual experimental and numerical techniques used to predict the environmental impact of engines.

show abstract

Energy Conversion Factor for Gasoline Engines in Real-World Driving Emission Cycle

et al. 2020

View full text Add to dashboard Cite

Energy factors for flexible fuel engines and vehicles operating with gasoline-ethanol blends

Cited by 6 publications

References 6 publications

Optimal Alignments for Designing Urban Transport Systems: Application to Seville

Optimal Alignments for Designing Urban Transport Systems: Application to Seville

Experimental Techniques and Numerical Models to Detect Pollutant Emission in the Transport Sector

Energy Conversion Factor for Gasoline Engines in Real-World Driving Emission Cycle

Contact Info

Product

Resources

About