Power Transmission Efficiency Analysis of 42 kW Power Agricultural Tractor According to Tillage Depth during Moldboard Plowing

Kim, Yeonsoo; Kim, Wansoo; Siddique, Md. Abu Ayub; Baek, Seung-Yun; Baek, Seung-Min; Cheon, Su-Hwan; Lee, Sang-Dae; Lee, Kyeong–Hwan; Hong, Dong-Hyuck; Park, Seong-Un; Kim, Yong Joo

doi:10.3390/agronomy10091263

Cited by 17 publications

(13 citation statements)

References 30 publications

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“…The drawback of this study is the prediction load using tractor and engine specifications, which were applied to the axle, were constant. Howard [37] conducted the fuel efficiency of the continuously variable transmission (CVT) tractor with respect to drawbar power that was a dynamic load [38]. Gui [28] suggested applying the engine speed controller to estimate the optimal fuel efficiency of the agricultural tractor.…”

Section: Discussionmentioning

confidence: 99%

Simulation of Fuel Consumption Based on Engine Load Level of a 95 kW Partial Power-Shift Transmission Tractor

Siddique

Baek

et al. 2021

Agriculture

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This study is focused on the estimation of fuel consumption of the power-shift transmission (PST) tractor based on PTO (power take-off) dynamometer test. The simulation model of PST tractor was developed using the configurations and powertrain of the real PST tractor. The PTO dynamometer was installed to measure the engine load and fuel consumption at various engine load levels (40, 50, 60, 70, 80, and 90%), and verify the simulation model. The axle load was also predicted using tractor’s specifications as an input parameter of the simulation model. The simulation and measured results were analyzed and compared statistically. It was observed that the engine load, as well as fuel consumption, were directly proportional to the engine load levels. However, it was statistically proved that there was no significant difference between the simulation and measured engine torque and fuel consumption at each load level. The regression equations show that there was an exponential relationship between the fuel consumption and engine load levels. However, the specific fuel consumptions (SFC) for both simulation and measured were linear relationships and had no significant difference between them at each engine load level. The results were statistically proved that the simulation and measured SFCs were similar trends. The plow tillage operation could be performed at the gear stage of 7.65 km/h with higher working efficiency at low fuel consumption. The drawback of this study is to use a constant axle load instead of dynamic load. This study can provide useful information for both researchers and manufacturers related to the automated transmission of an agricultural tractor, especially PST tractor for digital farming solutions. Finally, it could contribute to the manufacturers developing a new agricultural tractor with higher fuel efficiency.

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Section: Discussionmentioning

confidence: 99%

Simulation of Fuel Consumption Based on Engine Load Level of a 95 kW Partial Power-Shift Transmission Tractor

Siddique

Baek

et al. 2021

Agriculture

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“…A quasi-static slip model includes the system of equations (1)(2)(3)(4)(5)(6)(7)(8), where the unknown radius ρ of the trajectory curvature is unambiguously determined [23] from the equilibrium equations (2), taking into account formulas (3)(4)(5)(6)(7). Thus, each value of the external plow resistance force P corresponds to its own radius ρ of the trajectory curvature and the instantaneous sliding center O.…”

Section: Figure 1 a Diagram Of The Forces Acting On The Plowing Unitmentioning

confidence: 99%

“…However, the main method is still traditional plowing with a moldboard plow, which has a positive effect on the further growth and development of plants [2]. In terms of energy intensity, plowing takes 30-35% of the entire energy consumption in field cultivation [3]. The arable layer inversion technology does not only cuts and embeds weeds to a depth inaccessible for germination but also ensures mixing of soil layers and protects it from infectious agents [4].…”

Section: Introductionmentioning

confidence: 99%

Directional stability of an agricultural tractor

Troyanovskaya¹,

Zhakov²,

Grebenshchikova³

et al. 2021

FME Transactions

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The discrepancy between the plow width and the tractor width leads to the asymmetry of plowing units. The geometry of the plowshare surface of the moldboard plow contributes to the generation of lateral forces on the working tool. All this leads to the imbalance of the tool and the deviation of the tractor from straight-line movement during plowing. To maintain straight-line movement, the driver has to adjust the machine every 5-10 meters, which is highly tiresome. To study the causes of lateral slips of the plowing unit, we constructed a mathematical model, which consists of the equations of controlled movement and equations of the tractor's uncontrolled shear under the action of external forces from the plow. The description of the force interaction of the drive with the ground is based on the mathematical theory of friction, taking into account anisotropy and elastic properties in contact. Based on the passive shear model, we constructed a hodograph diagram of the maximum tractor shear force from the side of the working tool. We found that the shear force reaches its maximum friction value only in the case of a translational shear, when its line of action passes through the tractor's center of gravity. In all other cases, the shift (slip) of the tractor is caused by a lower force. We formulated the features and assumptions of the model as applied to caterpillar and wheeled tractors. As a result, we found that, regardless of the direction of the lateral displacement of the plow's traction resistance, the tractor is slipped towards the plowed field. The result of the numerical experiment showed that the main reason for the slip of the wheeled plowing unit is the difference in soils along the sides of the tractor but not the deviation of the plow traction resistance.

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“…Specialist CAD-3D software was used to prepare them. With the use of pre- and postprocessors of graphic engineering interpretation, the calculation model was described with solid elements enabling approximation of operating characteristics of an object in real conditions [ 47 , 48 ]. Based on the adopted transducer construction and the occurring loads, tetrahedral parabolic second-order elements were used in the prepared model.…”

Section: Strain Analysismentioning

confidence: 99%

Shaping the Design Features of a Dynamometer for Measuring Resistance Biaxial Components of Symmetrical Coulters

Marcinkiewicz

Spadło

Staszak

et al. 2021

Sensors

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The article lays out the methodology for shaping the design features of a strain gauge transducer, which would make it possible to study forces and torques generated during the operation of symmetrical seeder coulters. The transducers that have been known up until now cannot be used to determine forces and torques for the coulter configuration adopted by the authors. For this purpose, the design of the transducer in the form of strain gauge beams was used to ensure the accumulated stress concentration. A detailed design was presented in the form of a 3D model, along with a transducer body manufactured on its basis, including the method for arranging the strain gauges thereon. Moreover, the article discusses the methodology of processing voltage signals obtained from component loads. Particular attention was paid to the methodology of determining the load capacity of the transducer structure, based on finite element method (FEM). This made it possible to choose a transducer geometry providing the expected measurement sensitivity and, at the same time, maintaining the best linearity of indications, insignificant coupling error, and a broad measurement range. The article also presents the characteristics of the transducer calibration process and a description of a special test stand designed for this purpose. The transducer developed within the scope of this work provides very high precision of load spectrum reads, thus enabling the performance of a detailed fatigue analysis of the tested designs. Additionally, the versatility it offers makes it easy to adapt to many existing test stands, which is a significant advantage because it eliminates the need to build new test stands.

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Power Transmission Efficiency Analysis of 42 kW Power Agricultural Tractor According to Tillage Depth during Moldboard Plowing

Cited by 17 publications

References 30 publications

Simulation of Fuel Consumption Based on Engine Load Level of a 95 kW Partial Power-Shift Transmission Tractor

Simulation of Fuel Consumption Based on Engine Load Level of a 95 kW Partial Power-Shift Transmission Tractor

Directional stability of an agricultural tractor

Shaping the Design Features of a Dynamometer for Measuring Resistance Biaxial Components of Symmetrical Coulters

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