Gear pumps are hydraulic machines capable of transferring energy and performing work in
pumping fluid. This study presents an analysis of the hydrodynamic model of an external …

The flow ripple in an internal gear pump was measured by means of a new instantaneous
high-pressure flowmeter. The flowmeter consists of two pressure sensors mounted on a …

Partial electrification of hydraulic circuits to achieve energy savings requires an increase in
the angular speed of the positive displacement pumps, with the risk of incomplete filling. In …

This research presents a comparison between two numerical approaches developed and
later compared for studying External Gear Pumps (EGPs). Models have been developed for …

In pump-controlled hydraulic systems, configuring a flowmeter at a variable piston pump to
monitor output flow causes additional losses. A method for indirect flow measurement of the …

The flow control range of the double-compound axial piston pump with the traditional
mechanical-hydraulic feedback servo control is limited and the accuracy is poor …

The article presents the results of an experimental study of the sound pressure level (SPL)
caused by a hydraulic power unit with an external gear pump. The study was carried out with …

This article presents computational fluid dynamics (CFD) modeling of the flow processes at a
certain specimen of an external gear pump. The purpose of the developed two-dimensional …

Fluid starvation and congestion at the meshing area of external gear pumps (EGPs) happen
inevitably as an intrinsic nature of these pumps. As a result, cavitation and excessive …

The periodic flow and pressure pulsation of the axial piston pump can lead to periodic
vibration, noise, and even damage to various components in the hydraulic system …