Dependences of operational and technical indicators on parameters and operating modes of mowers, forage and combine harvesters with the segment and rotational cutting devices

2019 ◽

Author(s):

S. Pustovit ◽

V. Kotkov

Keyword(s):

Cross Sections ◽

Animal Husbandry ◽

Response Surfaces ◽

Steady Increase ◽

Operating Modes ◽

Joint Influence ◽

Basic Parameters ◽

Agroindustrial Complex ◽

Combine Harvesters ◽

Near Future

The key task of the agroindustrial complex of the country is the steady increase of grain production, which is necessary for the formation of sowing funds, the provision of foodstuffs for the population and animal husbandry with feed, which is achieved due to the improvement of the process of grain separation on combine harvesters. Accordingly, the purpose of the study was to substantiate the operating modes of the sieve prethreshing device, which affects the process of separation of grain from spiked pile. On the basis of a comparative analysis of the mechanization of grain harvesting, it has been shown that combine harvesting methods for grain crops will remain dominant in the near future. Therefore, we investigated the basic mode parameters of cleaning, which are aimed at further increasing the capacity of the combines. According to the results of the research, mathematical models were obtained, which will allow to estimate the degree of independent and joint influence of the basic parameters of the process of separation of spikelets on the initial parameters - the completeness of separation from the spiked heap of free grain and the passage through the sieve of grain with uncoated spikelets. Accordingly, a compromise problem was solved, in which it was necessary to find the values of the factors that ensure the maximum completeness of separation from the spiked heap of free grain with minimal passage through the sieve of grain with uncoated spikelets. The method of planning of multifactor experiments for the substantiation of the modes of operation of the sieve of the pre-threshing device is presented, and the essential requirements in the selection of factors for carrying out studies of these processes are presented. Cross sections of the response surfaces are constructed, which characterize the indicators of the completeness of discharge of free grain from a colossal heap and the passage through the sieve of grain with uncoated spikelets depending on the opening of the sieve louvers and the frequency of its oscillations.

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Analysis of Telematics Data of Combine Harvesters and Evaluation of Potential to Reduce Environmental Pollution

Atmosphere ◽

10.3390/atmos12060674 ◽

2021 ◽

Vol 12 (6) ◽

pp. 674

Author(s):

Dainius Savickas ◽

Dainius Steponavičius ◽

Rolandas Domeika

Keyword(s):

Fuel Consumption ◽

Diesel Fuel ◽

Agricultural Sector ◽

Negative Impact ◽

Field Tests ◽

Ambient Air ◽

Field Studies ◽

Operating Modes ◽

Transport Modes ◽

Combine Harvesters

The combine harvester (CH) is one of the most important machines with the most powerful engine used in the agricultural sector. It consumes significant amounts of diesel fuel and harms ambient air by releasing emissions. This study examines the telematics data of CHs (models with axial threshing apparatus) collected between 2017 and 2020. The time spent in various operating modes of CH, the fuel consumption, and the negative impact on the ambient air (expressed in global warming potential–(GWP)) were calculated. Field tests using the same CH model were also performed to confirm the collected telematics data’s values. Possibilities to minimize fuel consumption and air pollution by selecting the correct use of technological operations are evaluated. Telematics data analysis results showed that the CH spends ~18% and ~13% of the time in the idle and transport modes, respectively. It was also found that ~12% of diesel fuel was consumed outside the direct harvesting mode, amounting to 4.7 t year−1 of GWP per machine. Dual telematics/field studies showed that the optimal use of the CH in idle and transport modes could reduce the amount of pollutants released into the environment in terms of GWP by 1.3 t year−1 for one machine. Field tests have also shown that the GWP per ton of wheat harvest highly depended on the CH driving speed during harvesting. The optimum speed was determined as 4 km h−1, and the wheat grain and straw feed rate was determined as 24 kg s−1.

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Development of the Autonomous Vehicle Trajectory on the Hilly Road Using Approaches of Eco-Operating Modes

Resilience and Sustainable Transportation Systems ◽

10.1061/9780784482902.085 ◽

2020 ◽

Author(s):

Ming Li ◽

Lei Yu ◽

Guohua Song ◽

Lizhu Xie

Keyword(s):

Autonomous Vehicle ◽

Operating Modes ◽

Vehicle Trajectory

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Distributed Modeling Of Building Systems Through Cyber-Physical Integration

Promyshlennoe i Grazhdanskoe Stroitel stvo ◽

10.33622/0869-7019.2019.09.12-17 ◽

2019 ◽

pp. 12-17

Keyword(s):

Data Structure ◽

Operating Conditions ◽

Physical Models ◽

Distributed Model ◽

Physical Processes ◽

Distributed Modeling ◽

Distributed Models ◽

Operating Modes ◽

Building Systems ◽

Important Practical Application

This article describes the proposed approaches to creating distributed models that can, with given accuracy under given restrictions, replace classical physical models for construction objects. The ability to implement the proposed approaches is a consequence of the cyber-physical integration of building systems. The principles of forming the data structure of designed objects and distributed models, which make it possible to uniquely identify the elements and increase the level of detail of such a model, are presented. The data structure diagram of distributed modeling includes, among other things, the level of formation and transmission of signals about physical processes inside cyber-physical building systems. An enlarged algorithm for creating the structure of the distributed model which describes the process of developing a data structure, formalizing requirements for the parameters of a design object and its operating modes (including normal operating conditions and extreme conditions, including natural disasters) and selecting objects for a complete group that provides distributed modeling is presented. The article formulates the main approaches to the implementation of an important practical application of the cyber-physical integration of building systems - the possibility of forming distributed physical models of designed construction objects and the directions of further research are outlined.

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RESEARCH OF OPERATING MODES OF THE DEVICE REGULATION OF TENSION AND JET RESISTANCE ON THE BASIS OF THE POWER TRANSFORMER

ELECTRICAL AND COMPUTER SYSTEMS ◽

10.15276/eltecs.22.98.2016.16 ◽

2016 ◽

Vol 22 (98) ◽

pp. 96-100

Author(s):

Viktorija І. Kryvda ◽

◽

Valdemar G. Rudnickij ◽

Keyword(s):

Power Transformer ◽

Operating Modes

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SIMULATION OF WPP/HPP POWER SYSTEM OPERATING MODES IN DECENTRALIZED POWER SUPPLY SYSTEM

Alternative Energy and Ecology (ISJAEE) ◽

10.15518/isjaee.2016.09-10.012-024 ◽

2016 ◽

pp. 12-24 ◽

Cited By ~ 1

Author(s):

V. V. Elistratov ◽

A. V. Vinogradova (Chernova)

Keyword(s):

Power System ◽

Power Supply ◽

Power Supply System ◽

Supply System ◽

Operating Modes ◽

Decentralized Power Supply ◽

System Operating

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DIESEL ENGINE OPERATION IN USE OF FUEL WITH ADDITIVES

International Conference on Technics Technologies and Education ◽

10.15547/10.15547/ictte.2018.01.003 ◽

2018 ◽

pp. 18-24

Author(s):

Petar Kazakov ◽

Atanas Iliev ◽

Emil Marinov

Keyword(s):

Diesel Engine ◽

Fuel Consumption ◽

Diesel Fuel ◽

Internal Combustion Engines ◽

Experimental Studies ◽

Combustion Engines ◽

Engine Operation ◽

Factors Affecting ◽

Operating Modes ◽

Positive Effects

Over the decades, more attention has been paid to emissions from the means of transport and the use of different fuels and combustion fuels for the operation of internal combustion engines than on fuel consumption. This, in turn, enables research into products that are said to reduce fuel consumption. The report summarizes four studies of fuel-related innovation products. The studies covered by this report are conducted with diesel fuel and usually contain diesel fuel and three additives for it. Manufacturers of additives are based on already existing studies showing a 10-30% reduction in fuel consumption. Comparative experimental studies related to the use of commercially available diesel fuel with and without the use of additives have been performed in laboratory conditions. The studies were carried out on a stationary diesel engine СМД-17КН equipped with brake КИ1368В. Repeated results were recorded, but they did not confirm the significant positive effect of additives on specific fuel consumption. In some cases, the factors affecting errors in this type of research on the effectiveness of fuel additives for commercial purposes are considered. The reasons for the positive effects of such use of additives in certain engine operating modes are also clarified.

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