This impulsion tool uses a high speed on-off valve to control to-and-fro motion of the distributing oil valve core, which impels the cylinder rod to-and-fro motion to form impulsion.

The dissertation analyzes several different hydraulic controlling valves, mainly high speed on-off valves.

Simulation and experimental investigation on pressure dynamics of pneumatic high-speed on/off valves;

Electronically assisted braking system for vehicles based on a high-speed on/off valve;

The Research on the Electro-hydraulic Control System with High-speed ON/OFF Valve;

Research and application of a new PWM high speed on/off valve;

According to the slow response of electro-hydraulic actuator driven by single high speed on/off valve,which was leaded by the restrained volume of high speed on-off valve,the solution that using a high speed on-off valve as the pilot valve and a secondary valve as the distributing valve was presented.

High speed on/off valve is an excellent conversion element which has been developed since 1980 s, it has many merits such as high response speed , good ability of resisting contaminated oil and capability of assorting well with electro circuit.