The electrohydraulic servo variable speed volume pump control system (hereinafter referred to as ESPCS) is integrated with a permanent magnet synchronous motor motor), fixed-displacement pump, and hydraulic cylinder. By controlling the speed, output flow of can be controlled, displacement, force, Compared traditional electro-hydraulic valve system, ESPCS has advantages high power-to-weight rati...

The hydrostatic actuation system based on linear actuators improves the complex piston force and long transmission path of traditional electro-hydrostatic actuator (EHA). However, new nonlinear factors in direct-driven are introduced into system, which present challenges to modeling control. To improve accuracy performance prediction, this paper analyzed working characteristics an electromagnet...

The deformation of cylinder liner directly affects the sealing performance friction components in internal combustion engines, resulting high oil consumption, engine power loss, and high-particulate matter emissions. Previous research works focused more on wet vehicular liners, however, effects different loads dry is not clear yet. A non-road high-pressure common-rail diesel was selected as obj...

A novel integrated multi-physics assessment of the piston top compression ring an internal combustion engine under normal operation mode, as well subjected to cylinder deactivation is carried out. The methodology comprises ring-liner thermo-mixed hydrodynamics, elastodynamics ring, gas blow-by and emissions. Therefore, analysis provides prediction contact’s energy losses power leakage across cr...

In the given article, results of tribological research chrome-gray cast iron coupling are presented, friction conditions between cylinder liner and compression segment being lubricated in various environments modeled: diesel (control), pure biodiesel B100 biodiesel-diesel B20 mixture. It was established that average values coefficient coupling, case using biofuels B20, as lubricating material, ...

This paper deals with the design of a hydraulicmechanical load-sensing system using computer modelling and simulation in an object-oriented programming environment. As initial, the scheme of a hydraulic-mechanical load-sensing system of Bosch GMbH has been taken. A modified scheme of the system is proposed. The object-oriented mathematical model of the system is composed. The approach is based ...

Sirri Island is one of the most important islands in Iran where contains massive amounts of crude oil reservoirs and is a crude oil exporting and storage spot. Petroleum sludge wastes produced by the refineries are deposited in outdoor 2-ha open pits. 30 sludge samples from different depot locations were conducted in 3-time intervals and mixed with each other to form one homogenized sample. The...