Abstract
Summary. Currently used criteria for determining car operating efficiency in road traffic are, among others, emission of harmful substances, consumption of engine driving fuels, technical service and reliability of operation, safety of use. The operational characteristics of the car in terms of engine driving fuel consumption data is usually recognised as so-called road specific fuel consumption. An important deficiency of this approach is the failure to take into account the influence of the time on the journey’s effectiveness and the final result of the entire project. To obtain a new solution in this range in the analysis, a quantity called action, which at last will be treated as the criterion of the car operating effectiveness, was used. The quantity of is the product of the performed work and its realisation time. Many phenomena and processes in nature take place according to the principle of minimum of action − this criterion can be applied in the analysis of the car’s operating efficiency taking place in road traffic. An approach of this issue is presented in this article, wherein the basic data for analysis were obtained in the framework of the car tests performed at the real traffic conditions.
Highlights
The criteria used for determining the car’s operating effectiveness are among other criteria relating to pollutants and amount of harmful emissions, fuels and performance of driving materials consumption, technical service and operation reliability, comfort and safety in use [4, 5]
A significant shortage of this approach is the lack of the duration time of the whole journey on the impact and quantitative analysis outcomes of the entire project [2, 4]
It is proposed to complement the existing information presented by the onboard computer of the car with additional indications for the current and the average values of the criterion of action [4, 10]
Summary
The criteria used for determining the car’s operating effectiveness are among other criteria relating to pollutants and amount of harmful emissions, fuels and performance of driving materials consumption, technical service and operation reliability, comfort and safety in use [4, 5]. In the framework of the driver training courses, and especially during the current car use, there should be close attention to the efficiency of their operations, including the correctness of the vehicle driving, mainly in the selection of the gear ratio used, being achieved acceleration and the temporary as well as the average speed of the vehicle at the existing road condition [3, 6, 9]. It is proposed to complement the existing information presented by the onboard computer of the car with additional indications (in addition to the traditional, e.g. road fuel consumption) for the current and the average values of the criterion of action [4, 10] The description of this issue has been presented in the paper, wherein the basic data required for use in quantitative analysis of the posed problem were obtained under the road tests carried out [8]
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