Analysis of Universal Characteristics of Hydraulic Fluid Power Transmissions Operating in a Composition of Hydraulic-Mechanical Transmissions for Different Working Volumes of Hydraulic Machines of Axial Piston Type

Optimization study of low lateral force in eccentric ball-piston pumps

“…In a specific working condition, the leakage of the ball-cylinder interface depends on the position of the ball piston in the cylinder, the larger the eccentricity, the more serious the leakage. Samorodov and Avrunin 16 developed an analytical expression for calculating leakage between the ball piston and cylinder. Therefore, by analyzing the change in flow rate characteristics, it is possible to speculate on the change in the position of the ball piston in the cylinder during operation and thus verify the improvement in the force effect of the cylinder inclination on the ball-cylinder interface.…”

“…Where R vs is the radius of the valve shaft, h c is the clearance between the cylinder block and valve shaft, μ the fluid dynamic viscosity, and l represents the width of the flow distribution. According to the expression proposed by Samorodov and Avrunin, 16…”

“…Zhou et al 15 proposed a new type of conical distribution shaft structure, and developed the lubrication model of conical distribution shaft under steady working conditions by numerical method. Samorodov and Avrunin 16 take the GOP-900 hydraulic fluid transmission device as the research object, derive the analytical expression of fluid leakage between the ball piston and cylinder, considered the influence of structural parameters, application conditions, and oil viscosity, and solved the calculation problem of clearance leakage in ball piston pump. Kundu and Upadhyay 17 presented a technical overview of the rotary ball piston engine, describing its working principle and the benefits achieved in practical applications.…”