Experimental Determination of the Cinematic Misfit within the Transmission of a 4x4 Vehicle that Leads to Self-Generated Torque along the Vehicle’s Inter-Axle Driveline

Abstract:

Present paper aims at revealing a way to determine the cinematic misfit within a 4x4 vehicle’s inter-axle driveline, which is eventually the reason of the self-generated torque occurrence. We used experimental methods to determine the magnitude of the cinematic misfit. Within this frame, we used a vehicle that has a longitudinal (inter-axle) differential and we locked it, actually forcing the longitudinal transmission to work without differentiating the angular speeds on its output shafts. On the other hand, the tire radii were different, inducing the above-mentioned cinematic misfit that we were looking for. We also present the way we fit the transducers on the vehicle’s driveline components to measure the needed parameters. The paper also presents some theoretical considerations regarding the occurrence of the cinematic misfit and its way of generating closed power loops within the vehicle’s transmission.

• Periodical: Applied Mechanics and Materials (Volume 659)
• Pages: 262-267
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.659.262
• Online since: October 2014
• Authors: Marian Truta*, Marin Marinescu, Octavian Alexa, Radu Vilau, Valentin Vinturis
• Keywords: Longitudinal Transmission, Self-Generated Torque, Vehicle

References

[1] M. Marinescu, Considerations on the circulation of power in the transmission of vehicles with several engine axles in the assets of the Ministry of National Defense, PhD Thesis, Military Technical Academy, Bucharest, Romania (1999).

[2] M. Truta, Contributions to the theoretical and experimental research of the dynamic internal power loops of the all-wheel-driven automotive driveline, Ph.D. Thesis, Military Technical Academy, Bucharest (2013).

[3] M. Gorianu, Mecanica autovehiculelor cu roti si cu senile. Mersul rectiliniu, Editura Academiei Tehnice Militare, Bucuresti (1992) (in Romanian).

[4] M. Marinescu, Modelarea matematica al circulatiei de putere în transmisia unui automobil 4x4. PhD Report, no. 1 - Academia Tehnica Militara - Bucuresti 1995 (in Romanian).

[5] S. Nastasoiu, Influenta schemei constructive a actionarii puntii din fata asupra calitatilor de tractiune ale tractoarelor cu patru roti motoare, PhD Thesis, University of Brasov 1969 (in Romanian).

[6] M. Marinescu, Solutii moderne în constructia de automobile, Editura Academiei Tehnice Militare, Bucuresti (in Romanian).