Efficiency of Application Self-blocked Cross Axle Screwball Differential at Car 4 × 4 Movement on Not Deformable Base Surface

  • A. A. ShelepovEmail author
  • D. I. Istomin
  • E. E. Rikhter
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


The variety of road conditions and factors depending both on the condition of the roadbed and on the weather conditions that determine the conditions of the car’s motion is considered, it is shown that this manifold requires the use of differentials with variable locking ratio, the mathematical problem of optimizing the distribution of torques during the vehicle’s motion is solved with a solid support surface. The obtained regularity shows that the ratio of the torque applied to the wheel to the total torque must be proportional to the ratio of the mass per wheel to the total mass of the car. As an example of such a differential, a self-locking screwball differential was considered, road tests were conducted and experimentally confirmed the efficiency of its application both in terms of optimal power distribution and maintaining the blocking ratio in the most optimal range, and in terms of fuel efficiency.


Screwball differential Cross axle differential Car efficiency 



Work was performed under financial support of the Federal State Institution “Fund for Assistance to Small Innovative Enterprises in Science and Technology” in the frames of the project Development of screwball differential civilian vehicles under agreement No. 9109ГУ2/2015 dated 24.12.2015. The work was supported by Act 211 Government of the Russian Federation, contract No. 02.A03.21.0011.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • A. A. Shelepov
    • 1
    Email author
  • D. I. Istomin
    • 2
  • E. E. Rikhter
    • 3
  1. 1.ChelyabinskRussia
  2. 2.ChelyabinskRussia
  3. 3.South Ural State UniversityChelyabinskRussia

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