Tire inflation and its influence on drawbar characteristics and performance – Energetic indicators of a tractor set

Šmerda, T.; Čupera, Jiří

doi:10.1016/j.jterra.2010.02.005

Cited by 53 publications

(29 citation statements)

References 6 publications

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“…The results obtained from this situation also confirm those obtained by ŠMERDA & ČUPERA (2010), when analyzing the influence of tire pressure of radial construction on the traction performance of an agricultural tractor.…”

Section: Resultssupporting

confidence: 85%

Dynamic Traction of a Mechanized Set Based on Technical and Operational Parameters

et al. 2017

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ABSTRACT:The objective of this study was to evaluate and model the traction performance parameters of a tractor 4x2 FWD, according to the tractor speed, the internal pressure and the type of tires construction. For each type of tire construction was assembled an experiment in which we evaluated the influence of internal pressures of the front and rear tires and the speed of the mechanical assembly. It was found that the sliding of the diagonal run, presented significant effect in all variables analyzed, since the radial showed no influence of the factors evaluated. The power available in the drawbar was higher when the tractor was equipped for radial tires. The response variables, fuel consumption schedule and specific fuel consumption were more sensitive to the speed of the internal tire pressure. The fuel consumption per area worked, did not affect the analyzed variables. As for the effort prediction models in the tractor drawbar, it was only possible for diagonal run, which are influenced by speed and internal pressure levels of the front and rear tires.

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Section: Resultssupporting

confidence: 85%

Dynamic Traction of a Mechanized Set Based on Technical and Operational Parameters

et al. 2017

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“…The research indicates that 20 to 55% of available tractor power is lost in the process of interaction between tires and soil surface (Peca et al, 2010;Šmerda & Čupera, 2010;Taghavifar & Mardani, 2014). The rolling resistance has on approximately constant relation with low velocities.…”

mentioning

confidence: 95%

“…Depth of the tracks depends on the mass, soil hardness, tire dimensions and tire inflation pressure. Tire inflation pressure also influences how much the wheels slip and is regarded as on important factor affecting tractor field performance indicators, such as draft power (Senatore & Sandu, 2011;Srinivasa Rao et al, 2012;Šmerda & Čupera, 2010;Taghavifar & Mardani, 2013).…”

mentioning

confidence: 99%

Influence of Extra Weight and Tire Pressure on Fuel Consumption at Normal Tractor Slippage

Damanauskas¹,

Janulevičius²,

Pupinis³

2015

JAS

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Tire pressure and wheel load are both easily managed parameters which play a significant role in tillage operations for limiting slip which involves energy loss. To a great extent, this aspect affects the fuel consumption and the time required for soil tillage. The study was focused on the tire pressure and extra weight variation effect on fuel consumption and work productivity for soil tillage at normal tractor wheels slippage (7-15%). The experimental research unit composed of an 82.3 kW 4WD tractor and a reversible 4-bodies plough is presented. Tests were carried out on a stubble loam, where slip of tractor driving wheels was  15%, tractor front ballast mass was varied in the range from 0 to 520 kg and inflation pressure in the tires from 240 kPa to 100 kPa. Dependences of tractor performance indicators on ballast mass and tires inflation pressure are presented. When tractor tire slip varies in the range from 7 to 15 percent (which is normal slip in the soil), reducing the tires inflation pressure decreases the driving wheel slip and fuel consumption, while increases work productivity. Increasing the additional mass of the tractor (adding ballast weights) decreases the driving wheel slip, increases work productivity, but also increases fuel consumption and soil compaction.

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“…Studying the use of high pressure tire inflation, it was concluded that there was a reduction of approximately 3 to 5% work capacity and a significant increase between 10 and 25% of fuel consumption per hectare, even in conditions of good tire adherence, as reflected in the range of 7 to 15% slippage registered (SERRANO, 2008). SMERDA & CUPERA (2010) state that the reduction in inflation pressure and the use of the right type of tires may improve the traction force and consequently decrease fuel consumption.…”

Section: Introductionmentioning

confidence: 99%

Energetic efficiency of an agricultural tractor in function of tire inflation pressure

et al. 2013

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ABSTRACT:The tire inflation pressure, among other factors, determines the efficiency in which a tractor can exert traction. It was studied the effect of using two tire inflation pressures, 110.4 kPa in the front and rear wheels, 124.2 kPa in the front wheel and 138 kPa in the rear wheels, the energetic efficiency of an agricultural tractor of 147 kW of engine power, in the displacement speed of 6.0 km.h -1 , on track with firm surface, with the tractor engine speed of 2000 rpm. For each condition of the tire pressure, the tested tractor was subjected to constant forces in the drawbar of 45 kN and 50 kN, covering 30 meters. It was used a randomized complete block with a 2x2 factorial arrangement (tire pressure and drawbar power) with four replications, totaling 16 experimental units. Data were subjected to analysis of variance, using the Tukey test at 5% probability for comparison averages. The lowest hourly and specific fuel consumption, the lowest slippage of the wheelsets and the highest efficiency in the drawbar was obtained with the tire inflation pressure of 110.4 kPa in the front and rear tires of the tractor, highlighting that lower pressures improve energetic and operational performance of the tractor.

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Tire inflation and its influence on drawbar characteristics and performance – Energetic indicators of a tractor set

Cited by 53 publications

References 6 publications

Dynamic Traction of a Mechanized Set Based on Technical and Operational Parameters

Dynamic Traction of a Mechanized Set Based on Technical and Operational Parameters

Influence of Extra Weight and Tire Pressure on Fuel Consumption at Normal Tractor Slippage

Energetic efficiency of an agricultural tractor in function of tire inflation pressure

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