Formation of a rational change in controlling continuously variable transmission at the stages of a tractor’s acceleration and braking

Authors

DOI:

https://doi.org/10.15587/1729-4061.2016.75402

Keywords:

hydrovolumetric­mechanical transmission, rational change in parameters, hydraulic branch of transmission, coefficient of performance, evaluation criteria

Abstract

We formalized the criteria for evaluation of indicators of a wheeled tractor with continuously variable hydrovolumetric­mechanical transmission from the point of view of loading a hydraulic branch of hydrovolumetric transmission in direct and reverse power flows. The given description of the criteria is used for the formation of change in parameters of adjustment of hydraulic machines (hydraulic pump and hydraulic engine) in the process of acceleration and braking of a wheeled tractor.

We formed a rational change in parameters of adjustment of a hydraulic machine at the stages of acceleration and braking for a wheeled tractor with continuously variable hydrovolumetric­mechanical transmission that is made by the scheme of the differential at the output. In the study of the obtained dependency of parameters of adjustment of hydraulic machines, we determined the change of such indicators as the time of acceleration and braking; braking distance of a wheeled tractor; coefficient of performance of hydrovolumetric drive and hydrovolumetric­mechanical transmissions; the difference of working pressure in hydrovolumetric drive. It was found that when applying the rational change in the parameters of adjustment of hydraulic machines instead of the linear one at the stages of acceleration and braking, the zone of the highest value of the coefficient of performance of hydrovolumetric­mechanical transmission narrows, which, in turn, points to the loading of the hydraulic branch of a hydrovolumetric transmission.

Author Biographies

Vadim Samorodov, National Technical University "Kharkiv Polytechnic Institute" Bahalia str., 21, Kharkov, Ukraine, 61002

Doctor of Technical Sciences, Professor, Head of Department

Department of Car and Tractor Industry 

Andrey Kozhushko, National Technical University "Kharkiv Polytechnic Institute" Bahalia str., 21, Kharkov, Ukraine, 61002

PhD, Senior Lecturer

Department of Car and Tractor Industry 

Eugene Pelipenko, National Technical University "Kharkiv Polytechnic Institute" Bahalia str., 21, Kharkov, Ukraine, 61002

Assistant

Department of Car and Tractor Industry 

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Published

2016-08-24

How to Cite

Samorodov, V., Kozhushko, A., & Pelipenko, E. (2016). Formation of a rational change in controlling continuously variable transmission at the stages of a tractor’s acceleration and braking. Eastern-European Journal of Enterprise Technologies, 4(7(82), 37–44. https://doi.org/10.15587/1729-4061.2016.75402

Issue

Vol. 4 No. 7(82) (2016): Applied mechanics

Section

Applied mechanics

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Copyright (c) 2016 Vadim Samorodov, Andrey Kozhushko, Eugene Pelipenko

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