In the context of the autonomous functioning of special equipment in the Far North and the Arctic is necessary to use its internal resources to maintain optimal thermal state units and units. This can be accomplished using a heat recovery system of the internal combustion engine. For this purpose the heat accumulator. The mathematical modeling of the thermal state of the heat accumulator in the cooling stage. The main factors affecting the cooling time of the thermal battery: TA insulation thickness, weight coolant, coolant temperature, air temperature, wind speed. Also developed a mathematical model of the process of cooling the heat accumulator in general terms. It is presented in graphical form, which simplifies the determination of the time of cooling the heat accumulator in its design. For the definition of Q and Bi developed a program «Time».

Keywords: operation, heat storage, thermal preparation, heat transfer, heat recovery system, low negative temperature

In developing training tools thermal units, assemblies and systems of machines operating at low temperatures below zero, should pay more attention to the monitoring of their thermal state. At this point, there are many ways to measure the temperature. All of them are divided according to the principle of action. There are a large number of sensors for measuring temperature, based on these principles. However, when building automation means of thermal preparation machines play a special role performance sensors of different design when used in automation nodes to determine the temperature units, assemblies and systems of machines. At this point in the design automation received widespread microcontrollers, comparators, and which comprise analog-digital converters in a single chip, and also capable of converting analog electric quantities into digital form. This ensures high accuracy.

Keywords: thermal state thermal training machine, temperature measurement, a semiconductor sensor, a thermistor, a thermocouple, a microcontroller, an analog-to-digital converter

Abstract: Operation of motor transport and special equipment is carried out in difficult conditions, the impact of environmental conditions (temperature, humidity, dust, wind, solar radiation) and changes in modes of operation of the machine. This affects the performance of equipment, the number and complexity of repairs. Away from fixed bases (in the field), the problem is particularly acute repairs. One of the most energy-intensive and expensive works are welding (welding parts with a break, welding cracks, fusing metal layer on the worn surface, metal cutting). In this work the welding equipment affect the voltage drops in the supply mains, therefore, produces a large number of failures such equipment. After the equipment is accompanied by an increased amount of electric power consumption, this results in material costs. Previously proposed equipment has improved mass, which reduces the efficiency of the welding. Based on this study was proposed innovative design welding inverter using the resonance effect, with enhanced reliability, low-cost design version (in terms of mass production). In order to improve the reliability and reduce the cost of the proposed design of inverter proposed a number of new approaches. Full-bridge inverter is studied welding power source with the implementation of the resonance effect with a stable and smooth operation, high reliability, because the circuit of the inverter is not sensitive to changes in the supply voltage.

Keywords: construction machinery, parts, low temperatures, thermal state, measurement, monitoring, control, sensor, hardware-measuring system

based on an analysis of the methods and schemes snow removal from roads and sidewalks it revealed that there is a snow plow, which would be cleaned in a single pass only the side of the road in the middle of the road cleared. At the same time to solve this problem are also two cars. In accordance with this work set a goal: increasing productivity snowplows. To explore this issue were based on the analysis of working bodies of snow plows developed and investigated a new type of dump actuator for snow removal from roads. It was determined that there is an additional resource to increase machine productivity. This is achieved by improving the design of the working body. This will not increase the resistance of the machine, because proposed symmetrical design with rotating blade and sliding half, which will reduce the resistance and to ensure stability.

Keywords: snow machine, snow removal from roads, snow removal scheme with roads, blade, working body