Vol 79, No 7 (2012)
- Year: 2012
- Articles: 19
- URL: https://journals.eco-vector.com/0321-4443/issue/view/3808
Articles
Is the agro-industrial sector of Russian Federation stagnating or developing?
Abstract
Some aspects of current state and development of the agro-industrial sector of Russian Federation are considered. Analysis of various opinions is given. Statistical data concerning the considerable drop of domestic industrial potential and the increase of dependence on import for the last 20 years is cited. Directions of overcoming the crisis in agro-industrial sector are designated. The role of WTO and possible consequences of joining this organization are estimated.
Tractors and Agricultural Machinery. 2012;79(7):3-10









Ejection system of distributed supply of gaseous fuel into diesel engine
Abstract
The injection gas fuel feed system, in which not only the redistribution of cylinder-by-cylinder fuel supply takes place, but also gas and air mixing is ensured, was under study. Fragments of the research results are presented. Stable engine operation under different loads and substitution of diesel fuel by the gas one up to 80% are proved by bench tests.
Tractors and Agricultural Machinery. 2012;79(7):13-14



A closed small-sized pneumatic separator for seed cleaning
Abstract
A pneumatic separator equipped by closed small-sized pneumatic system was developed. It ensures cleaning of seed of cereal and grain-legume crops from hard-separable impurities of different aerodynamic features after the air-sieve and trieur machines.
Tractors and Agricultural Machinery. 2012;79(7):15-18









Advanced method of motor and tractor diesels operation control at no-load mode and machinery for its implementation
Abstract
Advanced method of motor and tractor diesels' operation control at no-load mode and machinery for its implementation are described. The mode of periodically repeating strokes of cutting of fuel feed and its subsequent resumption on the level securing the most economic behavior of diesel engine operation in the reduced rotating frequency range of a crankshaft allows to lower the hourly fuel consumption and to improve the ecological indicators in comparison with diesel engine operation in typical operating conditions of independent idling.
Tractors and Agricultural Machinery. 2012;79(7):27-28



Calculation of laws of motion for the valves (tappets) of motor and tractor engines
Abstract
Basic provisions of calculation of required laws of motion for valves (tappets) grounded on the determination of working substance analogues of speed, required flow sections of valve apertures and valves (tappets) lifts are stated.
Tractors and Agricultural Machinery. 2012;79(7):29-32



On the paradox of models with a random frequency possessing a given correlation function and standard one-dimensional distribution density
Abstract
Models of stochastic processes possessing the given correlation function and the standard one-dimensional distribution density are analyzed. It is shown that contrary to expectations the introduction of auxiliary condition of one-dimensional distribution density normality into a random frequency model substantially worsens the reproduction accuracy of Gaussian processes.
Tractors and Agricultural Machinery. 2012;79(7):32-36















Modeling of dynamics of a crawler band with elastomer wideners
Abstract
Procedure of bench tests of a crawler band with elastomer wideners is described. It allows to repeat the dynamic processes in areas of drive and guide wheels in laboratory conditions. Dependences establishing the accordance between bench and trial tests by criterion of accumulated fatigue damage are given. Mathematical model describing the dynamics of a crawler band with flexible wideners is presented. Results of test calculations are given.
Tractors and Agricultural Machinery. 2012;79(7):48-51






Fundamental principles of resource saving in crop harvesting technology
Abstract
Resource-saving technologies of cereal crops harvesting providing the completion of unwinnowed pile handling at stationary station are analyzed. New requirements to the complex harvesting with simultaneous performance of postharvest operations are suggested.
Tractors and Agricultural Machinery. 2012;79(7):54-56



The 70th anniversary of M.M. Firsov
Tractors and Agricultural Machinery. 2012;79(7):55-



The 60th anniversary of A.P. Ukhanov
Tractors and Agricultural Machinery. 2012;79(7):56-


