DETERMINANTS OF CONSUMER BEHAVIOR: TRENDS AND DEMAND SEASONALITY

2017 ◽  
Author(s):  
Natalya Ovsyannikova ◽  
Keyword(s):  
Time Series ◽  
Consumer Behavior ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Retail Sales ◽  
On Demand ◽  
Demand Fluctuations ◽  
The Impact ◽  
Demand Seasonality

The article is devoted to forecasting demand based on the study of consumer behavior and the factors that determine this behavior. Identifying trends and assessing the impact of seasonality on demand generation is the first challenge in describing typical consumer choice behavior. The consumption effect describes how Habitual buying behaviour is Identifying trends and the seasonality of demand. The solution to the current task was to a retrospective analysis of retail sales. Such issues how the assessment of seasonality, the identification of a general trend, the interdependence of sales of alternative fuels have been researched under this article. The trends noted to decrease in the volume of fuel consumption, differences in the structure of retail turnover, and the total demand for motor fuel should be viewed as behavioral changes in the end-users. While gasoline and gas are mainly sold through the filling stations, the share of diesel fuel sales through filling stations is less than a fifth of the total sales. Structural changes in the retail fuel implication are that the fuel market is being replaced by cheaper substitutes - gas. In this article, we consider that the analysis of seasonality is the initial stage of forecasting the dynamics of demand. Seasonality was estimated for each fuel and for the group of motor fuels as a whole, for retail sales and total fuel consumption. The results of the analysis showed that gasoline and gas sales are moderate seasonality. Diesel fuel is characterized by the greatest amplitude of seasonal fluctuations. The seasonal activity the consuming-industries of diesel fuel explains the dynamics of demand, which is typical for secondary demand goods. Studying seasonality to determine its effect on demand includes: applying a multiplicative seasonality model for analyzing time series of demand and building a model for time series components; calculation of seasonality indices based on the average annual consumption level for prepare data and forecasting dynamics; comparison of peaks of seasonality and the amplitude of non-seasonal demand fluctuations to assess the impact of market factors. The study did not confirm that the seasonality of fuel consumption determines the seasonality of prices; no correlation was found between price fluctuations and the seasonality factor.

scholarly journals An Attempt to Reduce the Emission of Spark-Ignition Engine with Mixtures of Bioethanol and Gasoline as Substitute Fuels

2019 ◽  
Vol 26 (3) ◽  
pp. 31-38
Author(s):  
Wojciech Gis ◽  
Maciej Gis ◽  
Piotr Wiśniowski ◽  
Mateusz Bednarski
Keyword(s):  
Carbon Dioxide ◽  
Fuel Consumption ◽  
Carbon Dioxide Emissions ◽  
Alternative Fuels ◽  
Negative Impact ◽  
Spark Ignition ◽  
Solid Particles ◽  
Spark Ignition Engine ◽  
Maximum Power ◽  
The Impact

Abstract Limiting emissions of harmful substances is a key task for vehicle manufacturers. Excessive emissions have a negative impact not only on the environment, but also on human life. A significant problem is the emission of nitrogen oxides as well as solid particles, in particular those up to a diameter of 2.5 microns. Carbon dioxide emissions are also a problem. Therefore, work is underway on the use of alternative fuels to power the vehicle engines. The importance of alternative fuels applies to spark ignition engines. The authors of the article have done simulation tests of the Renault K4M 1.6 16v traction engine for emissions for fuels with a volumetric concentration of bioethanol from 10 to 85 percent. The analysis was carried out for mixtures as substitute fuels – without doing any structural changes in the engine's crankshafts. Emission of carbon monoxide, carbon dioxide, hydrocarbons, oxygen at full throttle for selected rotational speeds as well as selected engine performance parameters such as maximum power, torque, hourly and unit fuel consumption were determined. On the basis of the simulation tests performed, the reasonableness of using the tested alternative fuels was determined on the example of the drive unit without affecting its constructions, in terms of e.g. issue. Maximum power, torque, and fuel consumption have also been examined and compared. Thus, the impact of alternative fuels will be determined not only in terms of emissions, but also in terms of impact on the parameters of the power unit.

INVESTIGATION ON CHARACTERISTICS OF POME BLENDED DIESEL ENGINE

2015 ◽  
Vol 75 (8) ◽  
Author(s):  
Helmisyah Ahmad Jalaludin ◽  
Mohd Ruysdi Ramliy ◽  
Nik Rosli Abdullah ◽  
Salmiah Kasolang ◽  
Shahrir Abdullah ◽  
...  
Keyword(s):  
High Temperature ◽  
Combustion Chamber ◽  
Fuel Consumption ◽  
Oxygen Content ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Sudden Increase ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Complete Combustion

The sudden increase in fuel prices due to diminishing petroleum resources and the pollution resulting from its use has resulted in research into alternative fuels such as biodiesel. In addition, the faster combustion and high temperature in the combustion chamber which results from petroleum diesel fuel leads to higher nitrogen oxide (NOx) and Particulate Matter (PM) emissions. Therefore, this research was conducted to investigate the effect of using palm oil methyl ester (POME) blends as alternative fuels on the performance and emission of a compression ignition engine. The performance of POME blends and diesel were compared by manipulating the load of the engine at 1800 rpm. The results obtained show that fuel consumption rate is higher for the POME blends compared to the diesel fuel and increases as the POME concentration increases. The increment of brake specific fuel consumption and the reduction of CO emission exhibit a relation to the increase in percentage of POME. This is mainly contributed by the higher oxygen content of POME which promotes complete combustion of the blends. However, efficient combustion from the blends as compared to diesel fuel resulted from higher oxygen content and cetane number leads to significant increase in exhaust temperature. This in turn increases NOx emissions since using POME blends is highly related to high temperature of combustion chamber. The experimental results proved that POME in compression ignition engine is a possible substitute to diesel.

scholarly journals The Impact of the Covid-19 Pandemic on Retail Consumer Behavior

2021 ◽  
Vol 5 (1) ◽  
pp. 79-88
Author(s):  
Sayyida Sayyida ◽  
Sri Hartini ◽  
Sri Gunawan ◽  
Syarief Nur Husin
Keyword(s):  
Consumer Behavior ◽  
Quantitative Methods ◽  
Online Shopping ◽  
Secondary Data ◽  
The United States ◽  
Marketing Strategies ◽  
Retail Sales ◽  
Face To Face ◽  
Secondary Data Sources ◽  
The Impact

The COVID-19 pandemic that occurred throughout 2020 has an impact on economic sector. Consumers tend to use online channels to reduce face-to-face contact with marketers or other consumers. On the other hand, the consumer's need to see, touch and feel a product directly is only available in physical stores. This study aims to analyze the impact of the COVID-19 pandemic on retail consumer behavior. This study uses quantitative methods with secondary data sources obtained from several countries including the United States, England, Germany, France, Canada and Latin America. The results show that the shopping trends during the COVID-19 pandemic are webrooming and pure online shopping. Retail sales data in these countries shows that retail sales in physical stores exceed 70% of total retail sales and retail e-commerce sales are less than 30% of total retail sales. This research is expected to be useful for marketers in improving retail marketing strategies during the COVID-19 pandemic

Modelling oil product prices with due regard to proliferation of alternative fuels and tightening of technical standards

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Vladimir Ulanov ◽  
Oleg Skorobogatko
Keyword(s):  
Fuel Consumption ◽  
Alternative Fuels ◽  
Alternative Fuel ◽  
Model Parameters ◽  
Product Price ◽  
Technical Standards ◽  
Content Type ◽  
Passenger Vehicles ◽  
Technical Requirements ◽  
The Impact

Purpose This paper aims to clarify the relationship between oil product prices and factors describing the most crucial emerging trends in fuel consumption. The work is aimed to test the hypothesis that the proliferation of alternative fuel cars is a significant factor in determining the level of motor fuel prices. The influence of technical standards of oil products on the model parameters is also analysed. Design/methodology/approach The hypothesis testing is carried out on the basis of an econometric analysis of information regarding the North-West European commodity market and the data on the registration of alternative fuel passenger vehicles. Time series are analysed for the presence of a structural shift in the parameters of the model as a result of changes in the requirements of technical regulations for fuel. Findings The results suggest a different nature of the influence of the proliferation of alternative fuel passenger vehicles – it has little effect on diesel prices, whilst the indicators under study have a negative effect on the prices of motor gasoline. The construction of oil product price models has confirmed the impact of tightening the technical requirements for the parameters of dependence equations. Practical implications The obtained results can be used in forecasting price indicators in oil refining for strategic and investment purposes. Originality/value This paper fulfils an identified need to take into account the emerging global trends in fuel consumption to obtain reliable parameters for oil product price modelling.

Optimization of the Performance and Emissions of Soy Biodiesel Blends in a Modern Diesel Engine

2010 ◽  
Author(s):  
Mike Bunce ◽  
David Snyder ◽  
Gayatri Adi ◽  
Carrie Hall ◽  
Gregory Shaver
Keyword(s):  
Decision Making ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Combustion Noise ◽  
Biodiesel Fuel ◽  
Attractive Alternative ◽  
Rail Pressure ◽  
Biodiesel Blend

As the world is faced with continued petroleum demand, the need for alternative fuels which are renewable and domestically available is becoming apparent. Biodiesel is one such attractive alternative fuel which has physical and chemical properties similar to, and miscible with conventional diesel. While biodiesel does have many advantages, due to fuel property differences including oxygenation and a lower calorific value than diesel fuel, biodiesel combustion often results in higher fuel consumption and higher nitrogen oxide (NOx) emissions than diesel combustion. Stock diesel engine design and decision making target optimal performance with conventional diesel fuel, leading to suboptimal results for biodiesel. This study aimed to determine the appropriate engine decision making for the air/fuel ratio (AFR), exhaust gas recirculation (EGR) fraction, injection (rail) pressure, and start of main fuel injection (SOI) in a modern common rail diesel engine using variable geometry turbo-charging and operating with varying blend ratios of diesel and soy-based biodiesel fuel mixtures to minimize brake-specific fuel consumption (BSFC) and adhere to strict combustion noise, NOx and particulate matter (PM) emission constraints. When operating with the stock engine decision making, biodiesel blend combustion resulted in increases in NOx of up to 39% and fuel consumption increases up to 20% higher than the nominal diesel levels but also had substantial reductions in PM. Through modulation of the AFR, EGR fracton, rail pressure, and SOI at several operating points, it was demonstrated that the optimal engine decision-making for biodiesel shifted to lower AFRs and higher EGR fractions in order to reduce NOx, and shifted to more advanced timings in order to mitigate the observed increases in fuel consumption at the nominal settings. The optimal parameter combinations for B5 (5% biodiesel and 95% diesel), B20 (20% biodiesel and 80% diesel) and B100 (100% biodiesel) still maintained substantial PM reductions but resulted in NOx and noise levels below nominal diesel levels. However, these parameter combinations had little impact on reducing the biodiesel fuel consumption penalty but did improve the thermal efficiency of biodiesel blend combustion.

scholarly journals Impact of Alternative Paraffinic Fuels on the Durability of a Modern Common Rail Injection System

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4166
Author(s):  
Carmen Mata ◽  
Jakub Piaszyk ◽  
José Antonio Soriano ◽  
José Martín Herreros ◽  
Athanasios Tsolakis ◽  
...  
Keyword(s):  
Diesel Fuel ◽  
Alternative Fuels ◽  
Fuel Injection ◽  
Common Rail ◽  
Injection System ◽  
Fuel Injection System ◽  
Fuel Blend ◽  
Diesel Fuel Injection ◽  
The Impact ◽  
Conventional Diesel Fuel

Common rail (CR) diesel fuel injection systems are very sensitive to variations in fuel properties, thus the impact of alternative fuels on the durability of the injection system should be investigated when considering the use of alternative fuels. This work studies a high-pressure CR (HPCR) diesel fuel injection system operating for 400 h in an injection test bench, using a fuel blend composed of an alternative paraffinic fuel and conventional diesel (50PF50D). The alternative fuel does not have aromatic components and has lower density than conventional diesel fuel. The injection system durability study was carried out under typical injection pressure and fuel temperature for the fuel pump, the common rail and the injector. The results show that the HPCR fuel injection system and its components (e.g., piston, spring, cylinder, driveshaft and cam) have no indication of damage, wear or change in surface roughness. The absence of internal wear to the components of the injection system is supported by the approximately constant total flow rate that reaches the injector during the whole the 400 h of the experiment. However, the size of the injector nozzle holes was decreased (approximately 12%), being consistent with the increase in the return fuel flow of the injector and rail (approximately 13%) after the completion of the study. Overall, the injection system maintained its operability during the whole duration of the durability study, which encourages the use of paraffinic fuels as an alternative to conventional diesel fuel.

scholarly journals A study of hydrogen fuel impact on compression ignition engine performance

2018 ◽  
Vol 234 ◽  
pp. 03001 ◽  
Author(s):  
Evgeni Dimitrov ◽  
Boyko Gigov ◽  
Spas Pantchev ◽  
Philip Michaylov ◽  
Mihail Peychev
Keyword(s):  
Carbon Dioxide ◽  
Nitrogen Oxides ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Carbon Dioxide Concentration ◽  
Hydrogen Gas ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Exhaust Gases ◽  
The Impact

In this paper, a dual-fuel compression ignition engine test bench is presented. In hydrogen-diesel fuel co-combustion conditions, the engine parameters are determined – performance: effective torque, effective power and mean effective pressure; fuel economy: fuel consumption and specific fuel consumption; toxicity: carbon monoxide, carbon dioxide, nitrogen oxides, hydrocarbons, and smoke emissions (opacity). The impact of hydrogen-diesel fuel mass ratio on the performance, toxicity and economy of the engine is studied by obtaining a series of hydrogen-diesel fuel ratio variation characteristics at constant engine speed and load. Improvement of the economical parameters of the engine and reduction of carbon dioxide concentration in exhaust gases is detected under operation with hydrogen gas fuel. Significant reduction of the exhaust gases opacity is observed. It is not clear what the impact of the quantity of hydrogen, injected in the engine, on the concentration of nitrogen oxides in the exhaust gases is.

scholarly journals THE INFLUENCE OF CONSUMER BEHAVIOR ON THE SEGMENTATION OF RETAIL SALES OF CONSUMER GOODS

2014 ◽  
Vol 1 (9) ◽  
pp. 71
Author(s):  
Aleksandar Marić
Keyword(s):  
Consumer Behavior ◽  
Detailed Analysis ◽  
Consumer Goods ◽  
Retail Sales ◽  
Retail Chains ◽  
And Behavior ◽  
The Impact ◽  
Retail Formats

One of the main characteristics ofmodern retailing is certainly diversification of retailformats. The structure of retail formats in a particularmarket is conditioned by the needs and behavior ofconsumers in this market. Depending on the intensityof the impact of certain factors on consumer behavior,the segmentation of the retail sales, that is, divisioninto various retail formats is brought about. Therefore,in order to establish optimal retail structures, it isnecessary to perform a detailed analysis of the marketand the influence of economic, sociological,psychological, geographic and demographic factorson consumer behavior in a given market.Understanding the structure of retail formats is veryimportant both for the retail chains and for suppliersand manufacturers of consumer goods, as it facilitatesthe movement of products through marketing channelsand delivery to end consumers.

scholarly journals Effect of butanol on fuel consumption and smoke emission of direct injection diesel engine fueled by jatropha oil and diesel fuel blends with cold EGR system

2018 ◽  
Vol 49 ◽  
pp. 02010
Author(s):  
Syarifudin ◽  
Syaiful ◽  
Eflita Yohana
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Alternative Fuels ◽  
Fossil Fuels ◽  
Direct Injection ◽  
Jatropha Oil ◽  
Fuel Blend ◽  
Direct Injection Diesel Engine

Diesel engines are widely used in industry, automotive, power generation due to better reliability and higher efficiency. However, diesel engines produce high smoke emissions. The main problem of diesel engine is actually the use of fossil fuels as a source of energy whose availability is diminishing. Therefore alternative fuels for diesel fuels such as jatropha and butanol are needed to reduce dependence on fossil fuels. In this study, the effect of butanol usage on fuel consumption and smoke emissions of direct injection diesel engine fueled by jatropha oil and diesel fuel with cold EGR system was investigated. The percentage of butanol was in the range of 5 to 15%, jatropha oil was in the range of 10 to 30% and the balance was diesel fuel. Cold EGR was varied through valve openings from 0 to 100% with 25% intervals. The experimental data shows that the BSFC value increases with increasing percentage of butanol. In addition, the use of EGR results in a higher increase of BSFC than that without EGR. While the addition of butanol into a blend of jatropha oil and diesel fuel causes a decrease in smoke emissions. The results also informed that the use of EGR in the same fuel blend led to increased smoke emissions.

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