Field Performance of Rubber Belted and MFWD Tractors in Southern Alberta Soils

Turner, Reed J.; Shell, Lon R.; Zoz, Frank

doi:10.4271/972730

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…Power Delivery Efficiency (PDE) has been defined as the percentage of power produced by the engine that is available as tractive power delivered to an implement (1,2). PDE includes not only Tractive Efficiency (TE) but also the efficiency of the entire drivetrain from engine through the PTO and transmission.…”

Section: What Is Power Delivery Efficiency?mentioning

confidence: 99%

Power Delivery Efficiency: A Valid Measure of Belt and Tire Tractor Performance

Zoz¹,

Turner²,

Shell³

2002

Transactions of the ASAE

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Traction tests have shown generally better tractive performance for belts when compared to tires. However, total vehicle tests measuring field productivity and fuel consumption have shown little difference between belt and rubber tire tractors. Recent tests of both type of tractors by Southwest Texas State University and the Alberta Farm Machinery Research Centre have used Power Delivery Efficiency, or percent of input horsepower available at the drawbar as a measure of overall tractor performance. This paper will show why this is a valid procedure for making total tractor comparisons.

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Section: What Is Power Delivery Efficiency?mentioning

confidence: 99%

Power Delivery Efficiency: A Valid Measure of Belt and Tire Tractor Performance

Zoz¹,

Turner²,

Shell³

2002

Transactions of the ASAE

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“…belted tractors showed their greatest benefit when operated at vehicle traction ratios (VTRs) of 0.6 or higher or in soft or loose soil conditions. in comparison with the test presented by Turner et al (1997), our solution can improve the traction performance under good traction conditions (grass plot) as well.…”

Section: Measurement Procedures Of Speed and Slip Of Tractor Mini 070mentioning

confidence: 99%

“…Traction performance and fuel efficiency tests were presented by Turner et al (1997), providing the comparison of two different rubber belt tractors with two similar mechanical front wheel drive tractors equipped with radial tyres. Three different test methods were used on both tilled and untilled clay loam soil.…”

Section: Measurement Procedures Of Speed and Slip Of Tractor Mini 070mentioning

confidence: 99%

Drawbar Parameters of Tractor with Prototypes of Driving Wheels and Standard Tyres

Majdan

Abrahám

Tkáč

et al. 2018

Acta Technologica Agriculturae

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The paper presents the main drawbar parameters of tractor (drawbar pull, drawbar power and wheels slip) operating in a grass plot and evaluates the utilization of specially modified tyres with spikes. These prototypes of driving wheels were designed at the Department of Transport and Handling of the Slovak University of Agriculture in Nitra. The designed mechanism with spikes is mounted on standard tractor tyres, in which grooves were made. Spikes are hidden in grooves during transportation on a route. on the grassy landscape or soil, the spikes are ejected in order to improve the drawbar parameters. During operation, the drawbar pull and the rotation speeds of wheels were measured, whereupon the wheel slip was calculated. Results show the highest increase in tractor speed at the second gear and high load in utilized prototypes of the driving wheels (1.89 km·h ). Measurements also demonstrate the highest improvement of drawbar power under the aforementioned conditions in case of tractor with prototypes of driving wheels (1,719.87 W) in comparison with tractor using the standard tyres (1,061.57 W).

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“…Tractors with steel tracks are falling in disuse and being substituted by tractors with belted rubber tracks, since the latter allow higher on-road mobility and travelling speed (Renius, 1994). In spite of the lower soil compaction, tracked tractors have higher internal resistance with respect to wheeled ones; these may reduce traction efficiency and, consequently, increase the fuel consumption (Bekker, 1956;Turner et al, 1997;Wong, 2001). Recently, triangular rubber tracks, that can be easily mounted on a conventional tractor to increase the drawbar pull, have become available on the market (Ansorge and Godwin, 2007, 2009Arvidsson et al, 2011;Molari et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Field performance of an agricultural tractor fitted with rubber tracks on a low trafficable soil

Molari¹,

Mattetti²,

Walker³

2015

J Agricult Engineer

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The introduction of rubber tracks on tractors has allowed more engine power per unit weight than with steel-tracked tractors, together with a reduction in soil compaction and higher on-road speeds. Recently, triangular rubber tracks able to be adapted on conventional wheeled tractors have been introduced. In this context, the goal of the paper is to evaluate the performance of a tractor with four triangular rubber tracks with respect to those of a wheeled tractor; the comparative tests consist of ploughing under on low trafficable and workable soil. The results obtained have shown a higher tractive efficiency, lower soil compaction and up to 20% lower specific fuel consumption for the fully tracked tractor. These results are in accordance with previous tests conducted with the triangular rubber tracks on highly trafficable soil, although in the present case, the dynamic traction ratio is markedly lower due to the low trafficable soil. The use of triangular rubber tracks is therefore justified on low trafficable soils and more in general on different soil conditions, since the soil is less compacted by such traction device.

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Field Performance of Rubber Belted and MFWD Tractors in Southern Alberta Soils

Cited by 8 publications

References 3 publications

Power Delivery Efficiency: A Valid Measure of Belt and Tire Tractor Performance

Power Delivery Efficiency: A Valid Measure of Belt and Tire Tractor Performance

Drawbar Parameters of Tractor with Prototypes of Driving Wheels and Standard Tyres

Field performance of an agricultural tractor fitted with rubber tracks on a low trafficable soil

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