Electrically controlled pressure relief valve system and method

摘要: An electrically controlled, proportional, pressure relief valve (100/200) used to control the maximum allowable in a hydraulic line (3), whose is control, for example, relative up-and-down positioning and speed of movement combine header (1) on an agricultural combine, which effective pilot controlled by solenoid (113/213). The distal tip armature (114/214) bears against force translating drive pin (112/212), turn ball (110; FIG. 2) or poppet (210; 3). permitted linearly varied applied voltage/current coil (115/215). Such arrangement allows be easily interfaced by, computer (20) with condition responsive input/output section (21), greatly expanding possible applications system invention. In preferred application (FIG. 1 ), ground contacting ski sled (22) carried ("C") monitored computer, then sends electrical signals valve, response controls level ram moving header, determining its vertical position moves, as it goes from one other respect ground.