Real world vehicle emissions: Their correlation with driving parameters

Pathak, Sunil; Sood, V K; Singh, Yaduvir; Channiwala, S. A.

doi:10.1016/j.trd.2016.02.001

Cited by 129 publications

(35 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The use of the positive propulsive work W + P is imperative since an ICE engine is not a reversible heat engine. This quantity can be obtained from an energy balance, Equation (14), considering for simplicity reasons the vehicle as non-motored, and the positive propulsive force F + P as an external action applied to its center of mass, Figure 3. This action is the only positive energy transfer to the vehicle body, responsible for overcoming its inherent resistance F R and for balancing the mechanical energy, kinetic and potential, dissipated during braking W B = F B dx and stored in the vehicle ∆E M .…”

Section: Propulsive and Vertical Alignment Efficienciesmentioning

confidence: 99%

“…The need to expand the knowledge on road energy consumption in a variety of scenarios, reflecting road geometry, vehicle characteristics, and control strategies, is more pertinent today than ever before. Numerous studies have addressed the question of quantifying the energy demand and emissions exhibited by different types of vehicles, in order to develop fuel consumption and emissions models [1][2][3][4][5][6][7], to adjust driving cycles to real-world conditions [8][9][10][11][12][13][14][15], to determine the energy-efficiency of electrical vehicles (EV) or the benefits of regenerative braking in a hybrid powertrain [16][17][18][19], and to adopt eco-friendly driving strategies through vehicle control optimization [20][21][22] or the practice of eco-routing [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Road Geometry on Vehicle Energy Consumption and CO2 Emissions: An Energy-Efficiency Rating Methodology

2019

View full text Add to dashboard Cite

This study presents a methodology for classifying road traffic energy efficiency. The indicators defined discriminate the impact of the road vertical and horizontal alignments upon energy consumption, disclosing the improvement potential of the road as a function of the traffic origin–destination matrix. The methodologic approach is based on basic physical principals, thus guarantying its generality, as opposed to the usual empirical mesoscale approaches. A simplified algebraic procedure is also proposed, resorting to simplified driving cycles and a constant speed assumption (CSA), thus avoiding the intricacy of microscale/microsimulation models. The simplified methodology was validated against field data acquired on the Portuguese highway A25. A microscale vehicle specific power analysis combined with detailed fuel models is compared against CSA results. The findings demonstrate its adequacy for free-flow traffic conditions and the importance of classifying road traffic energy-efficiency. For the case studied, it was found that 49.5% of the round trip propulsive energy expended by a 37-ton truck on the A25, a modern road, was degraded as heat through braking. The difference found between the microscale analysis and CSA approach is 0.8%, despite the speed unevenness, varying between 32 and 96 km/h, with a standard deviation of 24% of the average speed.

show abstract

Section: Propulsive and Vertical Alignment Efficienciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of Road Geometry on Vehicle Energy Consumption and CO2 Emissions: An Energy-Efficiency Rating Methodology

2019

View full text Add to dashboard Cite

show abstract

“…As the emission factors of the German Environment Agency are not differentiated between petrol and diesel cars, we rely on nitrogen oxide (NO X ) emission factors from the Austrian Environment Agency [17]. These are comparable to other studies which calculate NO X emission factors [18,19]. Since emission factors of the Austrian Environment Agency are given in grams per vehicle kilometer, we divide them by the load factor to obtain emission factors in g/pkm.…”

Section: Emission and External Cost Factorsmentioning

confidence: 99%

Emissions and External Environmental Costs from the Perspective of Differing Travel Purposes

Hagedorn

Sieg

2019

Sustainability

View full text Add to dashboard Cite

Comparisons of emissions and external environmental costs between transport modes usually focus on a distance-based approach. Emissions, and consequently the external costs of transport modes, are measured either per kilometer or passenger kilometer. For travel purposes such as holiday or leisure, however, this approach is not appropriate, as destinations are determined endogenously and thus distances vary across transport modes. In this study, we present a novel methodology to correctly and accurately measure leisure emissions and external costs. The new metric is called “full-price emissions”. Full-price emissions calculate the ratio of a transport mode’s emissions or external costs and its full price. The results show that the relative climate damage imposed by aircraft, calculated according to full-price emissions, is approximately four times larger than distance-based approaches reveal. We further observe that, in contrast to distance-based emission comparisons, environmental costs of petrol cars are lower than that of diesel cars. Additionally, full-price emissions display unintended substitution effects of environmental policies that can contribute to climate damage.

show abstract

“…Los procedimientos de prueba de emisiones para los vehículos ligeros se basan en un ciclo de transición que representa el patrón de conducción de un país en particular. Los ciclos para vehículos ligeros de servicio son FTP-75 y NEDC que se utilizan en los Estados Unidos y los procedimientos de ensayo europeos, respectivamente (Pathak, 2016). Los factores de emisión son la cantidad promedio de contaminantes emitidos por un tipo de vehículo (Binder, 2014).…”

Section: Introductionunclassified

Emisiones Contaminantes de un Motor de Gasolina Funcionando a dos Cotas con Combustibles de dos Calidades

et al. 2017

View full text Add to dashboard Cite

ResumenSe ha determinado la relación entre la calidad de la gasolina que se expende en el Ecuador (determinada por su octanaje) y el grado de las emisiones contaminantes producidas por el mismo vehículo de prueba, pero a presión atmosférica distinta en las distintas regiones del país, ubicadas desde nivel del mar hasta sobre los 2500 metros de altura. Para lograr dicho objetivo, se realizó una serie de pruebas y se ha considerado cinco medidas. Se realizó una medición estática de gases, en la que se consideró cuatro parámetros que son: hidrocarburos no combustionados HC (ppm), monóxido de carbono CO (%V), dióxido de carbono CO2 (%V) y oxígeno O2 (%V). Una vez procesados los datos se determinan los efectos de variables tales como revoluciones por minuto del motor (rpm), octanaje del combustible y altura del lugar de las mediciones, sobre las emisiones de CO, CO2, HC y O2. Palabras clave: emisiones contaminantes; gases de escape; motor a gasolina; número octano; Polluting Emissions of a Spark Engine Operating at Two Heights with Two Qualities Fuels AbstractIn this article, the relation between the quality of the gasoline expended in Ecuador (determined by its octane number) and the amount of polluting emissions produced by the same test vehicle, but at different atmospheric pressure of the country's regions, located at altitudes from sea level to as high as 2500 meters has been determined. To achieve this objective, a series of tests were done and five measures with five repetitions were conducted. A static exhaust measurement was performed, in which four parameters are considered: unburned hydrocarbons HC (ppm), carbon monoxide CO (%V), carbon dioxide CO2 (%V) and oxygen O2 (%V). Once data are processed the effects of variables such as revolutions per minute (rpm), fuel octane and height of the location of measurements, on the emissions of CO, CO2, HC and O2 are determined.

show abstract

Real world vehicle emissions: Their correlation with driving parameters

Cited by 129 publications

References 28 publications

Impact of Road Geometry on Vehicle Energy Consumption and CO2 Emissions: An Energy-Efficiency Rating Methodology

Impact of Road Geometry on Vehicle Energy Consumption and CO2 Emissions: An Energy-Efficiency Rating Methodology

Emissions and External Environmental Costs from the Perspective of Differing Travel Purposes

Emisiones Contaminantes de un Motor de Gasolina Funcionando a dos Cotas con Combustibles de dos Calidades

Contact Info

Product

Resources

About