Lista zgłoszonych artykułów

The development of motorization is inextricably linked to the need to assess the demand for energy carriers necessary to carry out transport tasks. A separate issue related to the use of energy carriers in vehicle operation is the need to determine both the energy demand for obtaining energy carriers and emissions at the stage of obtaining energy carriers and at the stage of their use (especially in order to determine the carbon footprint). It is also obvious that there is a need to assess the costs, including external costs of transport. In the case of operation of vehicles with internal combustion engines as a source of energy for the vehicle, the basic activity is therefore the assessment of the fuel consumption of the car engine in its long-term natural operation. The article presents a method based on the theory of cumulative fuel consumption. The outline of the method is presented using data from long-term (many years), natural operation of a middle-class passenger car covering a mileage of over 320,000 km and 647 refuelings. The results of the research and analyses turned out to be extremely adequate to the operational data. It is enough to mention here that the correlation coefficient of the mathematical model describing CFC (cumulative fuel consumption) R2 > 0.9999. Such an analysis result can be the basis for determining the ICFC (intensity of cumulative fuel consumption) and SCFC (unit cumulative fuel consumption) courses. The three models mentioned together constitute the energy footprint of the vehicle. It is also important that the energy footprint covers the entire period of vehicle operation, regardless of the fact that the data for its determination may come from only a part of this period. It has been shown that the assessment of vehicle fuel consumption created solely on the basis of known indicators, such as FE (average fuel consumption between cycles or its average value (AFE) may not be adequate for assessing the fuel consumption of the car engine. The application of the method developed and presented in the article may be helpful in assessing the introduction of changes in vehicles and their operation, as well as in the correct assessment of, for example, the carbon footprint of motorization or determining data for the assessment of costs, including external costs of transport.