Monika Andrych-Zalewska, Paulina Chmielewska and Radosław Wróbel
The current interest in the development of hybrid vehicles is a response to serious effects of road transport on the environment over recent years. In addition, vehicles equipped with this type of drive combine the advantages of a conventional diesel engine and electric motor. This results in higher system efficiency while reducing emissivity.
This work seeks to demonstrate the effect of electric power on the total power of a hybrid vehicle. The research on the chassis dynamometer (MAHA LPS 3000) of the hybrid sports car, Honda CRZ, has been performed in three modes of operation: normal, economical and sport. The obtained results are presented in the form of graphs of external engine characteristics, where the influence of electric power on the system is visible.
The tested vehicle is equipped with sixth version of Honda’s Integrated Motor Assist (IMA) technology, which is the crucial system, assisting the combustion engine in order to provide higher performance and better fuel economy.
The objective of technical condition assessment of the system of gas distribution pipelines is to obtain reliable information concerning the technical condition of the particular sites of the distribution system for successful planning of their maintenance and repair works, as well as for taking decisions on the extension of the operation time, reconstruction or elimination. The developed methodology provides for the development of the indices describing the sites of the system of gas distribution pipelines - the base factor (Fij), the share of the score set for each factor (Вij) in the group of the factor shares (βi), the shares of the group (ai), based upon which, by means of applying the linear algorithm, the group calculation score (Bi) and the integral score (F) are set and according to these scores the technical condition of the particular site is assessed and the conditions for its further operation are defined.
Wojnarowski J. (2011): The Significance and Role of IFToMM Poland in the Creative Development of Mechanism and Machine Science , pp.367-382, [in M. Ceccarelli (ed.). Technology Developments: the Role of Mechanism and Machine Science and IFToMM, Mechanism and Machine Science 1, Springer Science].
The Significance and Role of IFToMM Poland in the Creative Development of Mechanism and Machine Science
Technology Developments: the Role of Mechanism and Machine Science and IFToMM, Mechanism and Machine Science 1
The main purpose of this article is to present the structure of a tactical air force, on the example of the Polish Tactical Air Force, in a form of a technical system. This kind of technical system presents the technical point of view and organizationally bonds currently existing systems, objects (facilities) and components that are included into the Polish Tactical Air Force. The authors consider the Polish Tactical Air Force as the main analyses domain of this article. The model of presented system is mainly focused on operators’ organization and operation system of military aircraft, which are considered as technical objects (facilities) in a tactical air force. At the beginning of this article, the Polish Tactical Air Force is placed in more complex systemic structures. Then, the authors use the systems methodology, systems engineering, technical object-oriented (facility-oriented) approach and the matrix of the Model of Generalized Technical System to describe the Tactical Air Force System and present it via the model of such a system. The following model is based on a tree-shaped scheme divided into five levels of decomposition. The Model of Tactical Air Force System (as the “final product” of authors’ considerations over the selected analyses domain) has a considerable contribution to systems’ development in the Polish Armed Forces. The above-mentioned systems’ development could lead to greater progress in the Polish military as well as in systemic ideas. The implementation of the systems methodology in the design process of a new system, performed in a tactical air force, is an example of technical object systems engineering.
It can be stated that over the last ten years in the European Union, the number of bone fractures caused by osteoarthritis has increased twofold. More than 100,000 hip or knee joints in total were implanted in Germany during one year. Within ten years, 5% of them have failed by aseptic loosening. The non-invasive determination of friction forces and control of their values during lubrication of cartilage cells on the superficial layer of human joint surfaces before implantation has a significant but not sufficient impact on the observation of the early abrasive wear of the cartilage joint and development of osteoporosis. From this fact was drawn the inspiration for the performed investigations related to the endoprosthesis surface parameters because knowledge of the roughness of prosthesis surfaces and friction forces and their control methods permits provision of a necessary standard deviation of the gap height and finally information about the implantation possibility. This article has been prepared based on the objective of European Project UE Grant IRSES,612593, 2013-2016 to represent the methodology and goal of the idea described in and make a wider discussion possible on this subject for further developments during the realization. To the research methods and materials used in this article realization belong: Rank Taylor Hobson-Talyscan 150 Apparatus implemented by Talymap Expert and Microsoft Excel Computer Program connected with the Mathcad 15 Professional Program and a new semi-analytical methods of probabilistic and statistic prognosis applied for theory of hydrodynamic lubrication of the curvilinear orthogonal surface and coordinates extended to the friction and wear problems of the endoprosthesis surfaces during the exploitation.
Andrzej Wojciechowski, Marta Wołosiak, Adam Doliński and Krystyna Pietrzak
The article presents an analysis of the need to introduce pro-ecological solutions at the fuel sector of industry, resulting from dynamic economic development, and environment protection requirements. The forecasts on the number of vehicles in the world and the subsequent growth of interest in alternative fuels are presented. The advantages of using these fuels as compared to petroleum fuels and electricity are described. The presented analysis emphasizes the context of EU legislation on environmental requirements. At the same time, it was pointed out the need to obtain the required technical and energy characteristics of alternative fuels, the competitive costs of their production, and important environmental aspects. Taking into account these premises and the principle of circular economy closed circuit, alternative fuels from organic waste, in particular from enormous amounts of organic non-biodegradable wastes (packaging, multi-material fabric, rubber, tires) were proposed. It has been shown that thermal decomposition by thermolysis, described briefly in the article, can be a method suitable for a wide economic application within the alternative fuel production system. Based on literature data and own experience, it has been found that the quality of fuels (oil, gas) obtained from the thermal decomposition of organic and mixed waste is not different from the requirements for the best quality raw materials used in the production of petrol and may even exceed the properties of petroleum. Introduction of the system of regional production and distribution of alternative fuels from waste could be remarkable driver of small towns and rural areas revitalization and development, while supporting build up and improvement of local communities.
The paper presents a new solution of asymmetrical mini disk tools for mining head of roadheader designed for hard and very hard rock mining. In the first part the benefits of disk tools used in TBM's and special tunneling machines were presented. Next part presents the results of works and laboratory tests performed for developing of new solution of asymmetrical mini disk tools. On the basis of these results new mining head equipped with mini disk tools with a complex trajectory was designed. The results of field tests with different constructional and material solutions of asymmetrical mini disk tools were presented. The directions for further development were described.
Amphlett J.C., Baumert R.M., Mann R.F., Peppley B.A. and Roberge P.R. (1995a): Performance modeling of the Ballard Mark IV solid polymer electrolyte fuel cell. I - mechanistic model development. - Electrochemical Science and Technology, vol.142, pp.1-8.
Amphlett J.C., Baumert R.M., Mann R.F., Peppley B.A. and Roberge P.R. (1995b). Performance modeling of the Ballard Mark IV solid polymer electrolyte fuel cell. II - empirical model development. - Electrochemical Science and Technology, vol.142, pp.9
, https://www.uml.edu/Research/Lowell-Center/About/Sustainable-Production-Defined.aspx , [Accessed 30 Mar. 2018].
Midor, K. (2014). Innovations in the Field of Enterprise Quality Management as an Element of Sustainable Development Implementation, Conference: 14th International Multidisciplinary Scientific Geoconference (SGEM) Location: Albena, Bulgaria, Jun 17-26, Geoconference on Ecology, Economics, Education and Legislation, SGEM 2014, Vol III Book Series: International Multidisciplinary Scientific GeoConference-SGEM, pp. 215-221.
Molamohamadi, Z., Ismail
The directions and speed of development of plane avionics systems are determined by three factors: economical consideration, required safety levels, and optimized working conditions for the pilot. This article presents the concept of a system in which the automatic control and stabilization process is effected because of coordinated deflections of trimming surfaces: the rudder, the elevator, and the ailerons. In particular, this article presents the structure of the system in the longitudinal movement steering channel by way of deflection of the trimmer of the elevator. Furthermore, it discusses the results of numerical model simulations, which are compared to the results obtained during in-flight tests. Additionally, this article specifies general technical requirements for the servomechanisms intended for the system class discussed herein.
Selection of sufficiently large amplification makes control the plane with relatively small deflections of the trimmer. In particular, relationship between the deflection of the elevator and the deflection of trimmer, view of a tail plane and dimensions of the elevator trimmer, the structure and results of the pitch angle control system and simulation are presented in the article.