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Influence of soil and tire parameters on traction

Author

Listed:
  • M. Schreiber

    (AGCO GmbH, Product Marketing Manager (MP), Marktoberdorf, Germany)

  • H.D. Kutzbach

    (University of Hohenheim, Department of Agricultural Engineering, Stuttgart, Germany)

Abstract

The drawbar pull, travel reduction (slip), and rolling resistance are the main criteria to describe the traction behaviour of off road vehicles. Besides the engine performance, the drawbar pull is influenced by the traction conditions such as soil and the tire parameters. These traction conditions have to be described by a limited number of parameters which can be easily determined. Empirical equations were used to analyse roughly 850 traction curves measured and published by Steinkampf. As a result, the important parameters to describe the traction conditions are three tire parameters (radius, width, inflation pressure) and five soil parameters (soil cover, upper soil strength, lower soil strength, clay content, moisture content). These parameters with relative values between 0 and 100% are used to establish the equations for the traction prediction. Main steps to achieve this goal are the extension of the traction slip equation by a linear term of slip, and the description of this curve by 4 meaningful characteristic coefficients: the x- and y-coordinates of the κ-maximum (σ κmax, κmax), the y-axis intercept ρe, and the gradient of κ at zero slip (κ'(0)).

Suggested Citation

  • M. Schreiber & H.D. Kutzbach, 2008. "Influence of soil and tire parameters on traction," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 54(2), pages 43-49.
    • Handle: RePEc:caa:jnlrae:v:54:y:2008:i:2:id:3105-rae
    DOI: 10.17221/3105-RAE
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    Citations

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    Cited by:

    1. Sujit Hensh & Partha Sarathi Chattopadhyay & Khokan Das, 2022. "Drawbar performance of a power tiller on a sandy loam soil of the Nadia district of West Bengal," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 68(1), pages 41-46.
    2. Klaus Kivekäs & Antti Lajunen, 2024. "Effect of Soil Properties and Powertrain Configuration on the Energy Consumption of Wheeled Electric Agricultural Robots," Energies, MDPI, vol. 17(4), pages 1-35, February.
    3. R. Abrahám & R. Majdan & R. Drlička, 2015. "Possibilities of improving the wheel tractor drive force transmission to soil," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 61(SpecialIs), pages 37-42.
    4. M. Helexa, 2014. "Monitoring the impact of tyre inflation pressure on tensile properties of forest tractors," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 60(4), pages 127-133.

    More about this item

    Keywords

    tire; traction; wheel-slip;
    All these keywords.

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