Method of determining fatigue characteristics of disc valves. The paper presents a concept of fatigue tests of disc valves used in automobile shock absorbers. A mechanical tester for simultaneous testing of more samples was presented and discussed.
Analysis of disc valve system in automotive shock absorber. The aim of this paper was to validate a numerical model of a disc valve system used in automotive shock absorbers. Results of investigations and simulations enable better to understand influence of design parameters and their contribution to strength of a valve system.
Simulation and experimental researches on hydrokinetic torque converter ZM130. The article presents the research on the properties of nonlinear model of the hydrokinetic torque converter ZM130. The experimental researches with step torque signal on the shaft of the turbine and the pomp confirmed their role in the building of the model.
Notified bodies in the face of changes in the European conformity assessment system. It has been described the mandatory system of conformity assessment with safety requirements for products marketed or put into service on UE territory. Criteria of obtaining certificates from notified bodies in the context of new Legislative Framework and existing directives have been listed.
Influence of hydropneumatic accumulator on noise during startup of hydrostatic drive system. In the paper reasons of noise in starting processes in hydraulic systems were presented. By installing special sized hydropneumatic accumulator it is possible to reduce noise level.
Problems of diagnosis, operation and modernization of hydraulic drives of loading machines in coal store places in the power plants. Continuous loading machines in the coal store places have been characterized. Technical and economic criteria of modernization demands have been proposed. The examples of performed modernizations of hydraulic drive and control system in particular mechanisms of the loading machines have been shown.
Investigation of the vibration transmission through the hydraulic hoses. In this paper the results of investigations regarding the transmission of the vibrations through the hydraulic hoses has been shown. Based on experimental modal analysis the natural frequencies and mode shapes for the hydraulic hoses has been identified.
Test of magnetic valve for hydrodynamic starting clutch with magnetic fluid. In this paper an idea of new type of a starting hydrodynamic clutch was presented. This new clutch is based on the coupling with an additional chamber. Primary function of the magnetic valve is to control of working magnetic fluid volume inside the clutch impellers.
Load positioning with hydraulic cylinders with fuzzy logic controller. The problem of heavy devices positioning using hydraulic system controlled by computer has been presented. Analyzed lifting system is a part of elementary particle detector called Panda.
Selection of working gap width in controlled viscous clutch. In the paper problem of choice of working gap width in controlled viscous clutch with magnetorheological fluid was described. Results of the test rig investigations have been presented and the phenomena adversely affecting the durability of the device have been mentioned.
