scholarly journals ANALYSIS OF FUEL CONSUMPTION SENSITIVITY IN FORESTRY ROAD TRANSPORT

FLORESTA ◽  
2019 ◽  
Vol 49 (2) ◽  
pp. 155 ◽  
Author(s):  
Pompeu Paes Guimarães ◽  
Julio Eduardo Arce ◽  
Eduardo Da Silva Lopes ◽  
Nilton Cesar Fiedler ◽  
Renato César Gonçalves Robert ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Load Capacity ◽  
Road Transport ◽  
Forest Road ◽  
Articulated Vehicle ◽  
Transport Cycle ◽  
Total Transport ◽  
Cycle Loading ◽  
Telemetric System ◽  
Industrial Unit

The objective of this work was to analyze how the variation of traveled distance, operational speed, journey time and net cargo transported influence the fuel consumption of vehicles in forest road transport. The data were collected in this operation, covering the area between the regions of Campo do Tenente (forest unit) and Piên (industrial unit), in the state of Paraná. We analyzed the partial elements, loaded trip and empty trip, as well as the total transport cycle (loading, unloading and travel). Using the same mechanical tractor, two vehicular compositions were studied, an articulated vehicle (truck tractor + semitrailer + trailer) and a conjugated vehicle (truck tractor + semitrailer). The vehicle telemetric system was used to perform the data collection of travel time, traveled distance, speed average and fuel consumption of the both vehicles. The results showed that the higher fuel consumption occurred in the loaded trips for longer distances. The sensitivity of fuel consumption was mostly influenced by was traveled distance, so it is recommended the use of vehicles of less load capacity for shorter distances.

scholarly journals MINIMIZAÇÃO DOS CUSTOS DE TRANSPORTES RODOVIÁRIO FLORESTAL COM O USO DA PROGRAMAÇÃO LINEAR E OTIMIZAÇÃO DO PROCESSO

FLORESTA ◽  
2002 ◽  
Vol 32 (1) ◽  
Author(s):  
Pedro Giovani Lacowicz ◽  
Ricardo Berger ◽  
Romano Timofeiczyk Júnior ◽  
João Carlos Garzel Leodoro Da Silva
Keyword(s):  
Cycle Time ◽  
Cost Minimization ◽  
Road Transport ◽  
Linear Program ◽  
Integer Linear Program ◽  
Fixed Cost ◽  
Forest Road ◽  
Time Optimization ◽  
Transport Cycle ◽  
Loading And Unloading

Este trabalho tratou da minimização dos custos do transporte rodoviário florestal, através da programação linear inteira e otimização dos tempos de ciclo de transporte. Após a obtenção dos dados de uma empresa florestal, foram elaborados três cenários, quais sejam: Cenário I: levantamento do quadro atual da empresa, como subsídio comparativo após a racionalização e otimização das etapas que mais consomem tempo do ciclo; Cenário II: realizada em função do uso da programação linear, juntamente com a racionalização dos tempos de fila de espera para carga e descarga; Cenário III: além da programação linear e racionalização dos tempos de espera em fila, utilizou-se, paralelamente, uma otimização do tempo de carga e uma elevação da velocidade de transporte. Os resultados mostraram-se significativos, onde a racionalização e a otimização contribuíram para a redução no número de caminhões e do custo total, traduzindo-se em aumentos na produção dos veículos, na receita bruta e líquida dos freteiros. Cost Minimization of Forest Road Transport by Using the Integer Linear Program and Transport Cycle Time Optimization Abstract This study was about the decreasent of the costs of forest road transport, using the integer linear program and transport cycle time optimization. After obtaining all of the costs, consumed time and the current company picture, a total of three evaluations were done and are described below in settings. Setting I: The current company picture data was calculated as a comparative subsidy following the racionalization and optimization stages that are more time-consuming in the transport cycle. Setting II: This evaluation was done in terms of linear programation use, together with the loading and unloading waiting in line time racionalization. Setting III: In this evaluation, besides the linear programation use and waiting in line time racionalization, it was simultaneously used a time optimization and a foster transport speed. The acquired results were very meaningful, while the racionalization and optimization happened, the trucks rate and total cost successively decreased, resulting in better vehicles performance, and consequently, an increase in the gross and net drivers’ income. Even though there was a costs decrease and an outsiders’ income increase, wich was not enough to pay their total costs, that is, only the variable ones were totally paid and part of the outsiders’ fixed cost.

scholarly journals THE ROLE OF INLAND WATERWAY NAVIGATION IN A SUSTAINABLE TRANSPORT SYSTEM

Transport ◽  
2007 ◽  
Vol 22 (3) ◽  
pp. 148-153 ◽  
Author(s):  
József Rohács ◽  
Győző Simongáti
Keyword(s):  
Sustainable Development ◽  
Future Development ◽  
Great Part ◽  
Road Transport ◽  
Sustainable Transport ◽  
Modal Shift ◽  
Guiding Principle ◽  
Inland Waterway ◽  
Total Transport

Sustainable development has become a guiding principle of human activities nowadays. Sustainable transport can take a great part in future development. Today this is not the case, and road transport contributes to this above all. For sustainable transport development the necessity of modal shift is inevitable and the inland waterway navigation should get the higher share of the total transport where there is an alternative. This presentation shows the reasons why the inland waterway navigation can increase the level of sustainability.

scholarly journals Analysis of exhaust emission measurements in rural conditions from heavy-duty vehicle

2020 ◽  
Vol 182 (3) ◽  
pp. 54-58
Author(s):  
Andrzej Ziółkowski ◽  
Paweł Fuć ◽  
Piotr Lijewski ◽  
Łukasz Rymaniak ◽  
Paweł Daszkiewicz ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Road Transport ◽  
Exhaust Emissions ◽  
Operating Conditions ◽  
Transport Sector ◽  
Exhaust Emission ◽  
Heavy Vehicles ◽  
Heavy Duty Vehicle ◽  
Emission Norm ◽  
Test Route

Road transport holds for the largest share in the freight transport sector in Europe. This work is carried out by heavy vehicles of various types. It is assumed that, in principle, transport should take place on the main road connections, such as motorways or national roads. Their share in the polish road infrastructure is not dominant. Rural and communal roads roads are the most prevalent. This fact formed the basis of the exhaust emissions and fuel consumption tests of heavy vehicles in real operating conditions. A set of vehicles (truck tractor with a semi-trailer) meeting the Euro V emission norm, transporting a load of 24,800 kg, was selected for the tests. The research was carried out on an non-urban route, the test route length was 22 km. A mobile Semtech DS instrument was used, which was used to measure the exhaust emissions. Based on the obtained results, the emission characteristics were determined in relation to the operating parameters of the vehicles drive system. Road emission, specific emission and fuel consumption values were also calculated.

Improving Cost and Fuel Efficiency of Short Sea Ro-Ro Vessels through More Slender Designs - A Feasibility Study

2015 ◽  
Author(s):  
Haakon Lindstad ◽  
Hans Jørgen Mørch ◽  
Inge Sandass
Keyword(s):  
Fuel Consumption ◽  
Feasibility Study ◽  
Environmental Performance ◽  
Fuel Efficiency ◽  
Road Transport ◽  
The Political ◽  
Fuel Cost ◽  
Hull Forms ◽  
Political Objective

Despite the political objective of decreasing road transport and transfer cargo to road and sea, short sea shipping is struggling. There is therefore a need for development of new short sea Ro-Ro vessels which use significantly less fuel per ton transported which can be built at a modest cost. This feasibility study has: First mapped the main characteristics of the current fleet, i.e. dimensions, capacities, installed power and designs speeds; Second investigated alternative combinations of main measurements to enable more slender hull forms which require less power and hence give fuel consumption and fuel cost per transported unit; Third, performed a case study to compare the economic and environmental performance of these slenderer designs, with traditional designs and road only solutions. This study shows the advantage of investigating a large number of alternative dimensions and capacities to identify the designs which reduces cost and fuel consumption. And that the best option is to design and build more slender vessels.

scholarly journals Ecological conditions for the implementation of the european modular systems in road transport

2021 ◽  
Vol 351 ◽  
pp. 01022
Author(s):  
Anna Dzioba ◽  
Marietta Markiewicz ◽  
Jan Gutsche ◽  
Adam Talaśka
Keyword(s):  
European Union ◽  
Fuel Consumption ◽  
Road Transport ◽  
The European Union ◽  
Main Aspect ◽  
Ecological Aspect ◽  
Modular Systems ◽  
Ecological Conditions ◽  
Transport Services ◽  
Standard Sets

This article focuses on the challenges and problems facing road transport nowadays. The main aspect discussed in the paper is the ecological aspect. As the demand for transport services has been constantly growing for the last 20 years, solving the problem has become a great challenge. In the further part of the study, an attempt was made to indicate solutions applied in the European Union. Another solution is presented in this paper, which is the introduction of European Modular Systems to road transport. Their characteristics were presented and countries in which such solutions are used were indicated. Based the analysis of studies in the field of the discussed issues, a comparison of fuel consumption and CO2 and NOx emissions of standard sets with EMS sets was carried out.

scholarly journals Modeling daily dynamics of speed and fuel consumption for urban delivery means

2021 ◽  
Vol 9 ◽  
pp. 31-43
Author(s):  
Lidiia Savchenko ◽  
Miroslava Semeriahina ◽  
Irina Shevchenko
Keyword(s):  
Fuel Consumption ◽  
Business Processes ◽  
Road Transport ◽  
Time Of Day ◽  
Traffic Density ◽  
Negative Consequences ◽  
Approximation Accuracy ◽  
Average Speed ◽  
Large Cities ◽  
The City

Road transport is one of the most important elements of the functioning of a modern city. Maneuverability, mobility, speed of delivery of goods and other criteria have provided him with a special and leading place in urban logistics. However, along with the benefits of a developed transport network for society, its progress is accompanied by negative consequences for the environment and the population of the city. High rates of growth in the number of cars, especially in large cities, cause an increase in emissions of harmful products into the atmosphere, which, accordingly, negatively affects the health of the population. Consequently, the problem of environmental pollution in large cities from harmful emissions from vehicles requires an urgent solution. The increase in emissions of harmful substances is affected by an increase in the consumption of fuel materials due to a decrease in speed because of an increase in traffic density in the city. The frequency, duration, prevalence of congestion is increasing along with the urbanization of the population and the increase in the number of cars in cities. The dense development of the central historical districts of the city exacerbates the problem of unhindered passage of individual, public and freight vehicles. In addition, a decrease in the speed of city traffic affects the speed of delivery of goods, correspondence, etc., which negatively affects the speed of business processes, and ultimately worsens the level of logistics services for customers. The purpose of this study is to analyze the current situation in terms of the dynamics of the average speed of the city's traffic flow by hours of the day and to obtain a mathematical model of the dependence of the speed of movement on the consumption of fuel materials for various environmentally friendly means of urban delivery (car, motorcycle, bicycle and pedestrian courier). The research was carried out in two stages. At the first, the study of the dependence of the average speed of movement in the city on the time of day (for all means of city delivery) was carried out. At the second stage, the study of the dependence of the average consumption of fuel materials in the city (which, accordingly, is a function of the speed of movement) on the time of day for motorized urban delivery vehicles was done. In the course of the study, at each stage, an equation of the trend lines was obtained with a sufficient approximation accuracy. In conclusion, the study proposes an algorithm for determining the average speed and average amount of fuel consumption when delivering small consignments in an urban environment using four urban logistics means - a car, a motorcycle, a bicycle, and a pedestrian courier (with the possibility of using public transport). The proposed algorithm can be applied in any delivery conditions in the city.

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