Effects of Fuel Price on Individual Dynamic Travel Decisions

2014 ◽  
Vol 2412 (1) ◽  
pp. 1-10
Author(s):  
Dujuan Yang ◽  
Harry Timmermans
Keyword(s):  
Fuel Price ◽  
Travel Decisions

Application of Box-Behnken Analysis on the Optimisation of Air Intake System for a Naturally Aspirated Engine

2020 ◽  
Vol 17 (2) ◽  
pp. 8029-8042
Author(s):  
N.S. Mustafa ◽  
N.H.A. Ngadiman ◽  
M.A. Abas ◽  
M.Y. Noordin
Keyword(s):  
Fuel Consumption ◽  
Fuel Efficiency ◽  
Engine Performance ◽  
Fuel Price ◽  
Design Expert ◽  
Intake System ◽  
Analysis Technique ◽  
System Components ◽  
Air Intake ◽  
High Influence

Fuel price crisis has caused people to demand a car that is having a low fuel consumption without compromising the engine performance. Designing a naturally aspirated engine which can enhance engine performance and fuel efficiency requires optimisation processes on air intake system components. Hence, this study intends to carry out the optimisation process on the air intake system and airbox geometry. The parameters that have high influence on the design of an airbox geometry was determined by using AVL Boost software which simulated the automobile engine. The optimisation of the parameters was done by using Design Expert which adopted the Box-Behnken analysis technique. The result that was obtained from the study are optimised diameter of inlet/snorkel, volume of airbox, diameter of throttle body and length of intake runner are 81.07 mm, 1.04 L, 44.63 mm and 425 mm, respectively. By using these parameters values, the maximum engine performance and minimum fuel consumption are 93.3732 Nm and 21.3695×10-4 kg/s, respectively. This study has fully accomplished its aim to determine the significant parameters that influenced the performance of airbox and optimised the parameters so that a high engine performance and fuel efficiency can be produced. The success of this study can contribute to a better design of an airbox.

STUDI PENENTUAN KOMPOSISI OPTIMUM CAMPURAN BAHAN BAKAR BIODIESEL–PETRODIESEL

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Soni S. Wirawan dkk
Keyword(s):  
Carbon Monoxide ◽  
Particulate Matter ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Cetane Number ◽  
Price Policy ◽  
Oxides Of Nitrogen ◽  
Fuel Price ◽  
Biodiesel Blend

Biodiesel is a viable substitute for petroleum-based diesel fuel. Its advantages are improved lubricity, higher cetane number and cleaner emission. Biodiesel and its blends with petroleum-based diesel fuel can be used in diesel engines without any signifi cant modifi cations to the engines. Data from the numerous research reports and test programs showed that as the percent of biodiesel in blends increases, emission of hydrocarbons (HC), carbon monoxide (CO), and particulate matter (PM) all decrease, but the amount of oxides of nitrogen (NOx) and fuel consumption is tend to increase. The most signifi cant hurdle for broader commercialization of biodiesel is its cost. In current fuel price policy in Indonesia (especially fuel for transportation), the higher percent of biodiesel in blend will increase the price of blends fuel. The objective of this study is to assess the optimum blends of biodiesel with petroleum-based diesel fuel from the technically and economically consideration. The study result recommends that 20% biodiesel blend with 80% petroleum-based diesel fuel (B20) is the optimum blend for unmodifi ed diesel engine uses.Keywords: biodiesel, emission, optimum, blend

Fuel price co-movements among France, Germany and Italy: A time-frequency investigation

Energy ◽  
2021 ◽  
Vol 225 ◽  
pp. 120236
Author(s):  
Claudiu Tiberiu Albulescu ◽  
Mihai Ioan Mutascu
Keyword(s):  
Fuel Price ◽  
Time Frequency

scholarly journals Travel Demand Prediction during COVID-19 Pandemic: Educational and Working Trips at the University of Padova

2021 ◽  
Vol 13 (12) ◽  
pp. 6596
Author(s):  
Riccardo Ceccato ◽  
Riccardo Rossi ◽  
Massimiliano Gastaldi
Keyword(s):  
Travel Demand ◽  
Risk Mitigation ◽  
Great Part ◽  
Mitigation Measures ◽  
Sustainable Mobility ◽  
New Normal ◽  
Logistic Regression Models ◽  
Demand Prediction ◽  
Travel Decisions ◽  
The University

The diffusion of the COVID-19 pandemic has induced fundamental changes in travel habits. Although many previous authors have analysed factors affecting observed variations in travel demand, only a few works have focused on predictions of future new normal conditions when people will be allowed to decide whether to travel or not, although risk mitigation measures will still be enforced on vehicles, and innovative mobility services will be implemented. In addition, few authors have considered future mandatory trips of students that constitute a great part of everyday travels and are fundamental for the development of society. In this paper, logistic regression models were calibrated by using data from a revealed and stated-preferences mobility survey administered to students and employees at the University of Padova (Italy), to predict variables impacting on their decisions to perform educational and working trips in the new normal phase. Results highlighted that these factors are different between students and employees; furthermore, available travel alternatives and specific risk mitigation measures on vehicles were found to be significant. Moreover, the promotion of the use of bikes, as well as bike sharing, car pooling and micro mobility among students can effectively foster sustainable mobility habits. On the other hand, countermeasures on studying/working places resulted in a slight effect on travel decisions.

scholarly journals Is the Travel Bubble under COVID-19 a Feasible Idea or Not?

2021 ◽  
Vol 18 (11) ◽  
pp. 5717
Author(s):  
Jo-Hung Yu ◽  
Hsiao-Hsien Lin ◽  
Yu-Chih Lo ◽  
Kuan-Chieh Tseng ◽  
Chin-Hsien Hsu
Keyword(s):  
Health Beliefs ◽  
Preventive Measures ◽  
Health Assessment ◽  
Willingness To Participate ◽  
Physical And Mental Health ◽  
Statistical Validation ◽  
Mental Health Assessment ◽  
Expert Opinions ◽  
Wait And See ◽  
Travel Decisions

The present study aimed to understand Taiwanese people’s willingness to participate in the travel bubble policy. A mixed research method was used to collect 560 questionnaires, and SPSS 22.0 software was used for the statistical validation and Pearson’s performance correlation analysis. Expert opinions were collected and the results were validated using multivariate analysis. Findings: People were aware of the seriousness of the virus and the preventive measures but were not afraid of the threat of infection. They looked forward to traveling to heighten their enthusiasm, relieve stress, and soothe their emotions. However, the infection and death rates have been high, there have been various routes of infection, and it has been difficult to identify the symptoms. The complex backgrounds of people coming in and out of airports, hotels and restaurants may create pressure on the participants of events. In addition, the flawed policies and high prices resulted in a loss of confidence in the policies and a wait-and-see attitude toward tourism activities. Thus, travel decisions (0.634), physical and mental health assessment (0.716), and environmental risk (−0.130) were significantly (p < 0.05) related to travel intentions, and different issues were affected to different degrees, while health beliefs had no significant effect (p > 0.05).

The Impact of Same versus Different Price Presentation on Travel Choice and the Moderating Role of Childhood Socioeconomic Status

2021 ◽  
pp. 004728752098890
Author(s):  
Marilyn Giroux ◽  
Drew Franklin ◽  
Jungkeun Kim ◽  
Jooyoung Park ◽  
Kyuseop Kwak
Keyword(s):  
Socioeconomic Status ◽  
Life History Theory ◽  
Price Dispersion ◽  
Price Difference ◽  
Product Evaluations ◽  
Relative Preference ◽  
Childhood Socioeconomic Status ◽  
Travel Decisions ◽  
Price Differences ◽  
The Impact

When making travel decisions, consumers are frequently exposed to a multitude of options, including differing price levels for the same product or service across a range of online travel agencies. The current research investigates how the magnitude of price dispersion in online pricing can influence travelers’ product evaluations and purchase intentions. Specifically, we predict that travelers will prefer a hotel with no price dispersion to a hotel with different prices listed when the price difference is small, or narrow. However, when the price difference is more pronounced, or wide, travelers will prefer a hotel with price differences compared to a hotel with no price dispersion. Four experiments demonstrate that this effect is consistent across different contexts and categories. Additionally, based on life history theory, we argue that the relative preference for the same versus different price dispersion will be moderated by the travelers’ childhood socioeconomic status (SES).

scholarly journals Modelling and Cost Estimation for Conversion of GreenMethanol to Renewable Liquid Transport Fuels via Olefin Oligomerisation

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1046
Author(s):  
Jenna Ruokonen ◽  
Harri Nieminen ◽  
Ahmed Rufai Dahiru ◽  
Arto Laari ◽  
Tuomas Koiranen ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Process Simulation ◽  
Cost Estimation ◽  
Fossil Fuels ◽  
Transport Sector ◽  
Low Carbon ◽  
Fuel Price ◽  
Co2 Emission Reduction ◽  
Electrolytic Hydrogen ◽  
Paris Climate Agreement

The ambitious CO2 emission reduction targets for the transport sector set in the Paris Climate Agreement require low-carbon energy solutions that can be commissioned rapidly. The production of gasoline, kerosene, and diesel from renewable methanol using methanol-to-olefins (MTO) and Mobil’s Olefins to Gasoline and Distillate (MOGD) syntheses was investigated in this study via process simulation and economic analysis. The current work presents a process simulation model comprising liquid fuel production and heat integration. According to the economic analysis, the total cost of production was found to be 3409 €/tfuels (273 €/MWhLHV), corresponding to a renewable methanol price of 963 €/t (174 €/MWhLHV). The calculated fuel price is considerably higher than the current cost of fossil fuels and biofuel blending components. The price of renewable methanol, which is largely dictated by the cost of electrolytic hydrogen and renewable electricity, was found to be the most significant factor affecting the profitability of the MTO-MOGD plant. To reduce the price of renewable fuels and make them economically viable, it is recommended that the EU’s sustainable transport policies are enacted to allow flexible and practical solutions to reduce transport-related emissions within the member states.

Ecuador fuel price rises will drive continued unrest

2021 ◽  
Keyword(s):  
Fuel Price ◽  
Content Type

Headline ECUADOR: Fuel price rises will drive continued unrest

scholarly journals Structural Change and Its Impact on the Energy Intensity of Agricultural Sector in China

2018 ◽  
Vol 10 (12) ◽  
pp. 4591 ◽  
Author(s):  
Hongyun Han ◽  
Shu Wu
Keyword(s):  
Agricultural Production ◽  
Energy Intensity ◽  
Agricultural Sector ◽  
Scale Economy ◽  
Policy Implications ◽  
Vegetable Production ◽  
Regional Heterogeneity ◽  
Fuel Price ◽  
Agricultural Structure ◽  
The Impact

China’s agricultural structure has undergone significant changes for the past four decades, mainly presenting as the fall of sown proportion of grain crops and the rise of vegetables, as has its energy consumption. Employing the panel data on 30 provinces during 1991–2016, this paper empirically explores the impact of agricultural structure changes (ASC) on the energy intensity of agricultural production (EIAP), direct energy intensity of agricultural production (DEIAP) and indirect energy intensity of agricultural production (IEIAP) in China. Besides, the regional heterogeneity of such impact is examined. The results show that: (1) ASC increases EIAP and IEIAP significantly, while ASC decreases DEIAP, which is explained by the structural effect and different planting modes of different crops; (2) the impact in the three administrative regions is similar to national situation, except the impact of ASC on DEIAP in the West Region, which is explained by regional differences of vegetable mechanization; (3) the result of the six vegetable production regions reveals greater regional heterogeneity, and this is attributed to the scale economy effect and the incremental effect of vegetable mechanization; and (4) fuel price, income, agricultural labor, old dependency ratio, and fiscal expenditure have different but significant impacts on EIAP, DEIAP, and IEIAP. Finally, some policy implications are given.

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