Efficiency of Application Self-blocked Cross Axle Screwball Differential at Car 4 × 4 Movement on Not Deformable Base Surface
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.
KeywordsScrewball 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.
- 1.Babkov VF (1983) Vehicle roads. Transport, MoscowGoogle Scholar
- 2.Bezborodova GB (1970) Study of the passability of cars. Abstract of the author. Dissertations. MADI, MoscowGoogle Scholar
- 3.Ageykin YaS (1972) All-wheeled wheeled and combined propellers. Mechanical Engineering, MoscowGoogle Scholar
- 4.Lefarov AKh (1961) Locking differentials and the passability of the car. Author’s abstract. Dissertations. MAZ, MoscowGoogle Scholar
- 5.Keller A, Alyukov SV (2016) Power distribution in transmissions of multi-wheeled vehicles. SAE Technical Papers 2016-01-1103. https://doi.org/10.4271/2016-01-1103
- 6.Barykin AYu (1992) Selection of the parameters of viscous couplings for the purpose of increasing traction properties and patency of a three-wheeled all-wheel drive vehicle. Abstract of the author’s abstract. Dissertations. MAMI, MoscowGoogle Scholar
- 7.Keller A, Aliukov S, Anchukov V, Ushnurcev S (2016) Investigations of power distribution in transmissions of heavy trucks, SAE Technical Papers 2016-01-1100Google Scholar
- 8.Pirkovsky YuV (2001) The theory of motion of an all-wheel drive car (applied problems of optimizing the chassis design). UNITY-DANA, MoscowGoogle Scholar
- 10.Krasikov VN (2008) Self-blocking vehicle differential gear. RU patent 2319875, 20 March 2008Google Scholar