Probes of tractor diesel engine Д-245.12С (4ЧН 11/12,5) were carried out in the Vjatsky state agricultural academy for improvement of ecological indexes by natural gas application. On the basis of the made laboratory-bench probes of working process of a tractor turbocharged diesel 4ЧН 11/12,5 at operation on a natural gas the possibility of improvement of ecological indexes of a diesel engine by natural gas application, in particular by drops of nitrogen oxide in exhausted gases, saving of solar oil, heightening of effective indexes is determined.
The results of research of modernized separating conveyor that exert intensive influence on tuber's layer are shown.
The technological process of grain drying is described. The basic sizes of a cyclone towards their reduction are specified. The research of a cyclone let to determine the loss of pressure in it at its installation in an air path of grain dryers. The method of research and the aerodynamic characteristic of the fan TS-14-46-8 and the cyclone are given.
Mobile energetic means (MEM) and methodology of its diagnosing are presented from the point of view of achievements in sphere of information technologies. The expediency of application of essentially new monitoring system behind technical conditions of MEM is caused by necessity for efficiency of data acquisition about its current condition with the purpose to warn malfunction on the first stage of formation. The program architecture of treatment of data system's and one of possible version of its testing is considered.
A scientific research was realized. Connection and dependence were determined between elements of threshing machine for combine harvester system. It enabled to elaborate functional scheme of threshing machine. Using of this scheme let to elaborate the plan of multiple-factor investigations of threshing machine by mathematical modelling of it.
The method of calculating of losses from slipping of caterpillar tractor, which takes into account asymmetric laden of caterpillar propulsors and its kinematic misfit, and method of successive approximations, improved by authors and used in developed method, is suggested.
Dynamic behavior of the mathematical models received on the basis of mathematical methods of identification according to natural experiment on curvilinear movement of a tractor train on turn is considered. Spectral characteristics are submitted as periodogramms, spectrums of state variables, peak and phase frequency characteristics.
In this work compression springs with torsion are examined. In calculations relations between kinematic and static characteristics, according to the Kirchhoff and Clebsch theory, are used. Calculation of variable section springs on carrying capacity or reliability loss with critical values of torque and axial force determination is brought.
Results of the analysis of application of different types transmissions on agricultural tractors of various power categories presented in the German market in 2009 are given. Comparison with the similar analysis on the tractors presented in the same market in 2007 and 2008 is given. The appreciable increase in application in 2009 in comparison with 2008 year of stepless transmissions on traktors in power ranges from 150 to 260 and from 260 to 400 h.p. is observed.
A pneumatic separator, which allows to clear grain from fine (sand etc.) and coarse (shingle, slag etc.) mineral and metallomagnetic impurities is presented. The constructional and technological circuit and general view of separator are drawn. The results of multiple-factor experiments on optimization of pneumatic separator parameters are submitted.
In agricultural industry the hammer grinders are the main devices for grinding grains. The lock of sifts in the operational area of the grainder prevent the removal of the ready product is the main drawback of these grainders. It can lead intensive formation of dust, wear of sift and hammer and over usage of electricity. More raised construction of the grinder allows to overcome all the drawbacks. The separator allows to define the main parameters of cylinder part of separating sift.
Last years a microprocessor technical revolution in automatics and control of mobile machines has occurred. Their elements have changed dramatically and their possibilities have essentially, cardinally extended. In the paper the condition of serious backwardness in this area of technics from a technological level of the advanced countries is ascertained, opportunities and prospects of development of automatics and controls in our country in new conditions are estimated. Personnel opportunities of development are estimated sceptically.
Replaceable-modular combine КСМ-5 for the mechanized berries gathering and currant plantations care is described. Its engineering-and-economical performance is given.