Verfahren und Vorrichtung zur Steuerung eines hydraulischen Systems

摘要

A method for controlling a valve (14) having large and small orifices (18,16) so as to prevent the valve (14) from switching to the small orifice (16) when a high build gradient is required. The method includes briefly bleeding off a small amount of fluid at the upstream side of the valve (14). This momentarily reduces the pressure difference when beginning the pressure build. After the valve (14) is opened with the large orifice (18), the fluid flow through the valve (14) prevents a high pressure difference.