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 95
- Downloads 0
The effect of additive on combustion characteristics and cycle to cycle variations on si engine fueled by gasoline and bioethanol
<span lang="EN-US">Currently, the main energy source is heavily dependent on fossil energy. The current transportation technology also uses fossil-derived energy sources to make vehicle engines are ignited. Also, the ele...
Determining electrical losses of the traction drive of electric train based on a synchronous motor with excitation from permanent magnets
<p>We have studied a traction drive based on the synchronous motor with excitation from permanent magnets for its electrical losses. A simulation model of the traction drive is synthesized, which employs the algorithm of...
Development of models and algorithms for estimating the potential of personnel at health care institutions
<p>The problem of the development of models and methods for the estimation of the personnel potential of the health care institution is explored. Personnel potential is considered in terms of rendering medical services....
Development of a technique to control and ensure the predefined porosity of a grain layer in the pneumo-separating channel at a grain heap cleaner
<p><span style="font-family: 'Times New Roman'; font-size: small;">To operatively control the state of a layer of the separated grain heap, while cleaning it from impurities in a pneumo-separating channel, it has been su...
Assessment of capabilities of military groupings (forces) based on the functional group “Engage”
<p class="a"><span lang="EN-US">An approach to assessing the capabilities of groupings of troops (force</span><span lang="EN-US">s) based on the use of the combinatorial method with the limited base of arguments on the e...