Evaluation of Some Performance Indicators for the Tractor (Case Jx75t)

Abstract

The experiments were conducted on farm of the Agriculture College, University of Basrah, in a silty clay soil with moisture content of 16%. The tractor used in this research was (CASE JX75T) tractor for studying and evaluating its agricultural performance. The parameters of study include three level of tillage depths (10, 15 and 20 cm) and four forward speeds (G=1.9, G= 2.44, G3= 3.25 and G= 4.33 km/h) by using randomized complete block design (RCBD) with a split plots. The results showed that the increase in forward speed from (1.9 - 4.33km/hr) led to a significant increased in drawbar pull and wheel slippage by the following percentages (33.33%-15.78%).The obtained results for the range of tests showed that the maximum effective field capacity 2.52 donum/h was obtained at 4.33 km/h travelling speed, while the fuel consumption 7.9 l/hr, required power 29.66 kW, and specific energy 19 kw.hr/don. Respectively the traveling speed and soil moisture , ploughing depth , the most important factors that affecting the effective field capacity and drawbar pull, fuel consumption, specific energy.

Performance Evaluation of an Imported Machine for Corn Threshing

“…Table (5) illustrates the impact of threshing cylinder speed, corn cultivar, feeding rate, and their twowat and three-way interactions on threshing efficiency. The results of the statistical analysis showed no significant effect of corn cultivar on threshing efficiency.…”

“…Another study by Saeng-in et al, [4] found that specific energy consumption increases with an increase in the rotational speed of the corn threshing machine but decreases with an increase in the corn feed rate. Himoud [5] showed that the specific energy of the (CASE JX75T) tractor decreased by 29.66% when the speed increased (from 1.9 to 4.33 km h -1 ). Ige [6] concluded that the damage ratio of grains increases by (1%-6%) with an increase in the rotational speed between 300-400 RPM of the thresher.…”

Calculating some Powers and Traction Force for Two Plows in Primary Tillage

“…Agricultural plows, such as chisel and moldboard differ in the pulling forces required for each plow during the field working, depending on the width of plow, type and shape of the furrow or tines, weight of plow, soil moisture, speed of the tractor, required depth of tillage, tire parameters, penetration angels and types of soil [16,17]. Found some researchers [18][19][20][21][22][23][24][25], increasing speed tractor or depth of tillage result to increasing traction force, drawbar power, horse power losses due to slippage, Specific traction resistance and Power on the rear axle of the tractor while decreasing traction efficiency.…”

Analysis of the stress affecting the cutting knives locally manufactured in the moldboard plough with the measurement of some of the indicators studied

“…The ploughing process is one of the largest agricultural operations is a need for energy from the total energy required by agricultural operations and represents about 30-50% of the total energy spent to prepare soil and prepare the bed for the growth of seeds [1], mention of [2] the decrease in moisture content and the increase in the depths of plough this led to the increase in the stress on the bottom plough caused resistance and load on the plough, [3] found in effect of soil moisture content on the energy requirements of the plough in mixture soils, that the soil moisture 8.92% recorded higher drawbar force compared to soil with moisture content 16.62% by 191.6 kg and by 25.54%. The increase is due to the fact that the dry soil needs a high drawbar force to overcome the strength of the soil cohesion and thus increase the requirements of the drawbar force, between [4],The design of the geometric shape of the moldboard plough has an important and essential role in reducing the requirements of the force of drawbars and consumption of the body of the moldboard plough bottom by reducing the friction that takes about 30% of a The total of the drawbar force, as they found that covering the board, railway and the chain of transmission has reduced the drawbar force by 15.74 % in the moisturizer content 20-25 %, as the design of the body covered with colors from the flow of the plough penetration of the soil due to the lack of friction and adhesion with the body compared to the traditional plough, [5],mentioned that high pressure on the municipal plough during the ploughing led to increase in fuel consumption, [6] found that among the most factors affecting the drawbar power and fuel consumption are the depth of ploughing and soil moisture and that the depths increase from 10-20 cm. 30% on the drawbar force and the increase in the drawbar power had a significant impact on increasing the slider of the outsiders [7] noticed in studying the effect of soil moisture and ploughing depths on some mechanical properties of the moldboard plough with two levels of soil moisture content 13-15% and 15-17% and three levels of depths of 10, 12 and 14 cm where the moisture content exceeded 13-15 Significantly, on the content 15-17% with a slippage rate of 8.36% and 9.35%, respectively, while the depth exceeded 10 cm, and the lowest slippage percentage was 7.960%, and when the depth increased to 14 cm, the highest slippage rate was recorded, which amounted to 9.83%.…”