International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The article considers the use of the bridge assemblies (BA) for low-stalk crop tending and growing, which comprises all the necessary agricultural machinery (soil cultivation, sowing-planting, weeding, overhead irrigation, etc.)
The bridge assembly (BA) is the open ground-mounted power-generating equipment plant operating on stationary ground-based electricity, in which the double-stream power consumption take place, one while moving the BA itself in the V1 direction, and the other one while moving the process module (PM) in the V2 direction. The mechanical characteristic of one of the engines has been constructed. The features of the operating modes in the processes of unloading and braking (resistance growth) are discussed and the permissible torque moments required for reliable operation are determined.

Traditional concept about the boundary layer structure, technique of the theoretical determination of a velocity profile in this layer, developed in first half of the 20th century, does not experienced, basically, any changes, although, on their close analysis a number of questions and even problems arises requiring their solution.

First of all, it is referred to physical causes of the occurrence of turbulence in the boundary layer, conservation of its near-wall region, conformance of a classical logarithmic velocity profile to experimental data, the appropriateness of introduction of such definition as “a laminar sublayer in the turbulent boundary layer”. All these outstanding problems are considered in the following materials.

The automatical variability option of changing the angular velocity is a perspective tendency for coordination of the characteristics of the engine with the working machine. That gives the ability to enhance the productivity of the machine, to simplify their controls and to increase their efficiency factor. All of that led to the creation of many methods and ways of lightly regulation of angular velocity and to a wide variety of constructions and many more. The main disadvantage of the mentioned mechanisms, and other similar mechanisms also, having the continuously variable gear ratio option is that the pump as an element of all of them appears to be only a consumer of power in all duty. The consumed power by the pump turns into heat and heats the oil which makes it necessary for it to be in greater amounts. This lowers the efficiency factor and field of application of mentioned mechanisms and more. For removing this disadvantage a solution is proposed with the realization of a hydromechanical gear with hydrovolume regulating contour.

In this paper a theoretical studies of instantaneous angular speed and torque fluctuation of diesel engine crankshaft have been conducted. It was evaluated the possibility to diagnose combustion related faults under stationary state.