Template-Type: ReDIF-Article 1.0 Author-Name: editors Title: List of reviewers Index of volume 57 Journal: Research in Agricultural Engineering Pages: I-II Volume: 57 Issue: 4 Year: 2011 DOI: 10.17221/4348-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/4348-RAE.html File-Format: text/html Handle: RePEc:caa:jnlrae:v:57:y:2011:i:4:id:4348-RAE Template-Type: ReDIF-Article 1.0 Author-Name: J. Čupera Author-Workplace-Name: Department of Engineering and Automobile Transport, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic Author-Name: P. Sedlák Author-Workplace-Name: Department of Engineering and Automobile Transport, Faculty of Agronomy, Mendel University in Brno, Brno, Czech Republic Title: The use of CAN-Bus messages of an agricultural tractor for monitoring its operation Abstract: The development of electronic components in engine regulation leads to the possibility of obtaining a large amount of parameters of control processes. Nowadays, these data can be read in an easy way due to the properties of used networks. The data obtained from the data bus must be processed carefully; otherwise, there is a risk of erroneous results. The article presents the results of measurements performed on four tractors. We focused on comparing the fuel consumption of engines and the accuracy of flow measurement readings from the CAN-Bus of these tractors. Even the same engines may show considerable differences in fuel consumption, taken from the CAN-Bus. The maximum deviation of the measured values ranged up to around 40%. However, the value of about 41% was measured in the range of fuel consumption of around 10 kg/h, the error of that tractor at the consumption of about 40 kg/h fell to 1.5 kg/h. A significant difference occurred in the tractor with a 235 kW engine. The consumption in the range of 50 kg/h showed an error of 8.4 kg/h. An improvement of the results can be achieved using derived regression functions. Based on our experience with the measurement of other types of tractors, we know that a similar situation with the accuracy of CAN-Bus data is also an issue in other categories of vehicles. Keywords: fuel consumption, tractor testing, data-bus Journal: Research in Agricultural Engineering Pages: 117-127 Volume: 57 Issue: 4 Year: 2011 DOI: 10.17221/20/2011-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/20/2011-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201104-0002.txt Handle: RePEc:caa:jnlrae:v:57:y:2011:i:4:id:20-2011-RAE Template-Type: ReDIF-Article 1.0 Author-Name: M. Askari Author-Workplace-Name: Department of Agricultural Machinery Engineering, Faculty of Agriculture, Urmia University, Urmia, Iran Author-Name: M.H. Komarizade Author-Workplace-Name: Department of Agricultural Machinery Engineering, Faculty of Agriculture, Urmia University, Urmia, Iran Author-Name: A.M. Nikbakht Author-Workplace-Name: Department of Agricultural Machinery Engineering, Faculty of Agriculture, Urmia University, Urmia, Iran Author-Name: N. Nobakht Author-Workplace-Name: Department of Agricultural Machinery Engineering, Faculty of Agriculture, Urmia University, Urmia, Iran Author-Name: R.F. Teimourlou Author-Workplace-Name: Department of Agricultural Machinery Engineering, Faculty of Agriculture, Urmia University, Urmia, Iran Title: A novel three-point hitch dynamometer to measure the draft requirement of mounted implements Abstract: An adjustable three-point hitch dynamometer with a draft capacity of 50 kN was developed to measure forces on the tractor and mounted implements. The design concept of the dynamometer was based on two linkage frames mounted between tractor links and the implement. The force sensing elements were comprised of a loadcell that was installed between the frames. The system provides variable width and height of the dynamometer links to satisfy a wide range of implement dimensions. All mounted tillage implements at categories II and III such as plows, cultivators and harrows were able to be tested by this dynamometer excluding mounted implements powered by power take-off (PTO). The dynamometer was calibrated and several field tests were conducted to measure the force required to pull a moldboard plow in a clay loam soil. The calibration showed a high degree of linearity between the draft requirements and the dynamometer outputs. Field tests showed that it was able to function effectively as intended without any mechanical problems. Keywords: dynamometer, adjustable, linkage frames, loadcell, draft Journal: Research in Agricultural Engineering Pages: 128-136 Volume: 57 Issue: 4 Year: 2011 DOI: 10.17221/16/2011-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/16/2011-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201104-0003.txt Handle: RePEc:caa:jnlrae:v:57:y:2011:i:4:id:16-2011-RAE Template-Type: ReDIF-Article 1.0 Author-Name: M. Herout Author-Workplace-Name: Department of Technological Equipment of Buildings, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: J. Malaťák Author-Workplace-Name: Department of Technological Equipment of Buildings, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: L. Kučera Author-Workplace-Name: Department of Technological Equipment of Buildings, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: T. Dlabaja Author-Workplace-Name: Department of Technological Equipment of Buildings, Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Biogas composition depending on the type of plant biomass used Abstract: The aim of the work is to determine and analyse concentrations of individual biogas components according to the used raw materials based on plant biomass. The measurement is focused on biogas production depending on input raw materials like maize silage, grass haylage and rye grain. The total amount of plant biomass entering the fermenter during the measurement varies at around 40% w/w, the rest is liquid beef manure. The measured values are statistically evaluated and optimised for the subsequent effective operation of the biogas plant. A biogas plant operating on the principle of wet anaerobic fermentation process is used for the measurement. The biogas production takes place during the wet fermentation process in the mesophile operation at an average temperature of 40°C. The technology of the biogas plant is based on the principle of using two fermenters. It follows from the measured results that maize silage with liquid beef manure in the ratio of 40:60 can produce biogas with a high content of methane; this performance is not stable. At this concentration of input raw material, the formation of undesirable high concentrations of hydrogen sulphide occurs as well. It is shown from the results that the process of biogas production is stabilised by the addition of other components of plant biomass like grass haylage and rye grain and a limitation of the formation of hydrogen sulphide occurs. It follows from the results that the maize silage should form about 80% w/w from the total amount of the plant biomass used. Keywords: biogas, maize silage, grass haylage, rye grain, wet anaerobic fermentation process Journal: Research in Agricultural Engineering Pages: 137-143 Volume: 57 Issue: 4 Year: 2011 DOI: 10.17221/41/2010-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/41/2010-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201104-0004.txt Handle: RePEc:caa:jnlrae:v:57:y:2011:i:4:id:41-2010-RAE Template-Type: ReDIF-Article 1.0 Author-Name: S.P. Sonawane Author-Workplace-Name: Department of Agricultural Engineering, College of Agriculture, Dapoli, India Author-Name: G.P. Sharma Author-Workplace-Name: Department of Processing and Food Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur, India Author-Name: A.C. Pandya Author-Workplace-Name: Central Institute of Agricultural Engineering, Bhopal, Madhya Pradesh, India Title: Design and development of power operated banana slicer for small scale food processing industries Abstract: A power operated rotary banana slicer suitable for small scale processing was designed and developed based on engineering properties of banana varieties, namely Nendran and Dwarf Cavendish. This banana slicer mainly consists of feeders for round slicing, cutter, power transmission mechanism, base support and frame. The power operated rotary slicer with three blade cutter that was operating at 360 rpm speed was developed to overcome drawbacks of existing hand or power operated rotary slicers and to meet the demand of small scale processing industries. This slicer has slicing efficiency of about a 93-94% with effective capacity of about 100 kg/h for both varieties. The mean thickness of cut for both varieties was about 2.00 ± 0.194 mm, whereas mean roundness was of 0.84 and 0.70 for Nendran and Dwarf Cavendish varieties respectively. Keywords: banana, power operated slicer, round slices, effective capacity, slicing efficiency Journal: Research in Agricultural Engineering Pages: 144-152 Volume: 57 Issue: 4 Year: 2011 DOI: 10.17221/35/2010-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/35/2010-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201104-0005.txt Handle: RePEc:caa:jnlrae:v:57:y:2011:i:4:id:35-2010-RAE Template-Type: ReDIF-Article 1.0 Author-Name: M. Müller Author-Workplace-Name: Faculty of Engineering, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Influence of surface integrity on bonding process Abstract: Adhesive bonding technology is successfully applied partly in the primary production, partly in the renovation in various fields of human activities. This fact emphasizes the importance of the partial factors research, which influence is essential for the quality, reliability and necessarily the usable life of bonded joints. The mechanical preparation of bonded surface is a varied process which influences directly the resultant bonded joint quality. The aim of the bonded surface mechanical preparation is the adhesion improvement in the adhesive - adherend interface. For mechanical preparation we use tools of defined cutting edge, by means of which we get the uniform surface texture, e.g. by milling. On the contrary such methods are more often used when the uniform surface cannot be reached. Shot blasting and grinding are significant representatives of these methods. The manual grinding can be significantly applied mainly in the agriculture. The absence of connected areas availability for the mechanical tooling and impossibility of their work clamping are the reasons for that. The breakwater in the sprinkler cistern restricting the liquid motion is the example. Keywords: bonding, mechanical preparation, parameter Ra/Rz, renovation Journal: Research in Agricultural Engineering Pages: 153-162 Volume: 57 Issue: 4 Year: 2011 DOI: 10.17221/39/2010-RAE File-URL: http://rae.agriculturejournals.cz/doi/10.17221/39/2010-RAE.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/rae-201104-0006.txt Handle: RePEc:caa:jnlrae:v:57:y:2011:i:4:id:39-2010-RAE