卷 82, 编号 7 (2015)
- 年: 2015
- ##issue.datePublished##: 15.07.2015
- 文章: 14
- URL: https://journals.eco-vector.com/0321-4443/issue/view/3647
Articles
Research of some design factors’ influence on the parameters of diesel engine operating on mixed biofuel
摘要
Benefits of application of biofuels produced on the basis of plant oils in diesel engines are shown. Specific features of fuel spraying process in diesel engine operating on rape oil biofuels are considered. Necessity of coordination between the length of spraying fuel jets and the combustion chamber dimensions is shown. Calculation research is conducted for the Д-245.12С diesel engine with various shapes and sizes of combustion chamber, as well as for the parameters of diesel engine with asymmetrical fuel injectors positioning. A method for optimization of fuel injector positioning in combustion chamber is suggested, taking into consideration the indices of fuel efficiency and exhaust gases toxicity.
Tractors and Agricultural Machinery. 2015;82(7):3-11
3-11
Improvement of effective indicators of tractor diesel engine by the use of compressed natural gas and exhaust gas recirculation, methanol and ethanol fuel emulsions
摘要
In order to determine and optimize the main parameters of tractor diesel engine, the influence of using of compressed natural gas, exhaust gas recirculation, methanol and ethanol fuel emulsions on effective indicators of diesel engine is investigated.
Tractors and Agricultural Machinery. 2015;82(7):12-15
12-15
Improvement of energy efficiency of alternative fuels
摘要
A new approach to improvement of energy efficiency of alternative fuels in diesel engines on the basis of thermochemical heat recovery of exhaust gases is developed.
Tractors and Agricultural Machinery. 2015;82(7):15-19
15-19
Method for parameters substantiation of deflector of single-drum stripper header
摘要
The article proposes a method for parameters substantiation of deflector of stripper header, taking into account the physical and mechanical properties of standing crops.
Tractors and Agricultural Machinery. 2015;82(7):19-23
19-23
Use of simulation modeling for optimization of configuration of soil cultivating units in the process of grain farming
摘要
In order to select the optimal configuration of soil cultivating unit for working in a specific farm the use of simulation modeling of Monte-Carlo is proposed. As a result of model analysis, it is found that all units could be divided into four efficiency groups. Obtained simulation models could be successfully used in software of on-board computers of tractors.
Tractors and Agricultural Machinery. 2015;82(7):24-26
24-26
Substantiation of dimensions of groove cylindrical seals of centrifuges with hydraulic drive
摘要
A calculation method for geometrical parameters of cylindrical rotor seals of cleaning centrifuges with hydrojet drive is developed. Different variants of seal arrangement in centrifuge are considered. Results of calculations of seal parameters for three various dimension-types used in serial centrifuges under various liquid pressures are given.
Tractors and Agricultural Machinery. 2015;82(7):27-30
27-30
Bases of active noise control
摘要
Mathematical models allowing to describe the bases of active control of sound fields are given. Results of using of active noise control system in the silencer are presented.
Tractors and Agricultural Machinery. 2015;82(7):30-34
30-34
Cold extrusion of hollow eccentric workpiece for high-pressure pump of diesel engine
摘要
Technological process of extrusion of hollow eccentric workpiece for high-pressure pump of diesel engine is investigated. Extrusion process with various sizes of eccentric head is simulated by means of QForm 2D finite element system.
Tractors and Agricultural Machinery. 2015;82(7):34-37
34-37
Determination of rational parameters of bogies in order to decrease negative reaction torques on frame
摘要
Some features of bogies of different designs are considered. Recommendations for their configuration in order to equalize the support reactions of forward and backward pairs of tandem wheels are given.
Tractors and Agricultural Machinery. 2015;82(7):37-39
37-39
Evaluation of durability of welded joints of agricultural machinery metal structures based on accelerated testing
摘要
A new method for evaluation of durability of welded joints of agricultural machinery metal structures based on accelerated tests is proposed. This method allows to reduce significantly the time of endurance test of welded joints and takes into account their design and technological parameters.
Tractors and Agricultural Machinery. 2015;82(7):40-42
40-42
Principles of increasing the durability of threaded connections of agricultural machines’ working organs
摘要
New designs essentially increasing the durability of threaded connections of parts of agricultural machines are developed.
Tractors and Agricultural Machinery. 2015;82(7):42-45
42-45
Organization of research and practice base for training specialists in quality assessment of small-scale mechanization means of 0,2 tractive class
摘要
The article discusses the possibility of use of research and practice base (testing field) for students’ research work on the basis of obtained theoretical knowledge and for gaining experience in the development and quality assessment of tractor units and means of small-scale mechanization of 0,2 tractive class.
Tractors and Agricultural Machinery. 2015;82(7):45-49
45-49
Method for substantiation of modernization parameters of maintenance and repair base of enterprises using agricultural machinery
摘要
The article presents the theoretical aspects for substantiation of main directions of modernization of maintenance and repair base of enterprises using agricultural machinery, primarily large agricultural enterprises and machine-technological stations. Substantiation of modernization parameters of the maintenance and repair base should be performed on the basis of technical and economic criteria for the rational distribution of technical service works.
Tractors and Agricultural Machinery. 2015;82(7):49-51
49-51
English-Russian agricultural engineering and technology abbreviations dictionary
Tractors and Agricultural Machinery. 2015;82(7):52
52
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