Development of the positive engagement continuously variable transmission design with the application of graph theory
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2018, Vol 3, Issue 1
Abstract
<p>Various designs of CVTs were explored from two points of view: analysis of the design itself and analysis of the methods and techniques, used in the process of creation of the CVT. To solve the problem of finding new designs of mechanisms, the graph transformation method was developed. It includes the following heuristic techniques: a decrease in the number of graph nodes at simplification of a design or to remove non-essential elements; a change in location of graph edges and comparison of a new location of edges and necessary changes in a design; a search for all possible options for location of the parts that correspond to the same graph; introduction to the graph of the nodes, corresponding to the property, for implementation of which a part (a node) can be added to a design or, vice versa, can be removed from a design, and the property it implemented will be implemented by other parts.</p><p>The original design of the CVT, in which load is transmitted by gear engagement without using friction disks and flexible sections, was developed. A continuously variable of transition ratio is ensured by a gear wheel with a variable pitch. The gear wheel consists of three gear sectors, two of which are involved in meshing. The third unloaded sector performs a turn with angular velocity that is higher than velocity of rotation of the output shaft until it takes a position before coming into engagement. The CVT does not have such drawback as fluctuations of transmission ratio. Based on the analysis of the bond-graphs, efficiency was determined, which depending on velocity of the output shaft is in the range of 95…97 %. The disadvantage of the developed design is an insufficiently wide gear ratio range R=1.5…1.6, which is limited by transverse contact ratio ε<sub>α</sub><em></em></p>
Authors and Affiliations
Viktor Ivanov, Galyna Urum, Svitlana Ivanova, Mariia Volkova
Keywords
Related Articles
- EP ID EP527953
- DOI 10.15587/1729-4061.2018.131101
- Views 86
- Downloads 0
Development of cooling systems on the basis of absorption water-ammonia refrigerating machines of low refrigeration capacity
<p>An analysis of the cycles of an absorption water-ammonia refrigerating machine (AWARM) is carried out in a wide range of operating parameters (temperature of the heating medium: 45...145 °C, outdoor temperature: 10......
Effect of lactic acid microorganisms on the content of nitrates in tomato in the process of pickling
<p>We established the content of nitrates in vegetables and studied special features in the course of microbiological and denitrification processes during pickling of tomatoes with a different content of nitrates. It was...
The study of influence of natural antioxidants on quality of peanut and linseed oil blends during their storage
<p>Influence of various natural antioxidants (oil extracts of sage and black currant leaves, garlic and hips) on in-storage quality of oils has been studied. Dynamics of the acid and peroxide numbers of fat of the develo...
Research into aero acoustic characteristics of two-row impellers of the axial compressor
<p>We have conducted numerical simulation of current in the axial impellers with a single-row and a two-row geometrically equivalent blade crowns with a density of blade crowns over average radius of 1...2.5. The pressur...
A study of the effect of cycling modes on the electrochromic properties of Ni(OH)2 films
<p>As a result of conducted studies, a series of electrochromic Ni(OH)<sub>2</sub> films were prepared using the cathodic template method under the same conditions. Prepared films have been used for comparison of regimes...