Voltage-regulating system voltage-regulating system has the voltage adjustment characteristic catching method on hydraulic vehicle brake system and its voltage-regulating system

摘要

PROBLEM TO BE SOLVED: To improve the practicability of a pressure regulation system including a spool valve type pressure regulator, a boosting linear valve for adjusting the pilot pressure of the pressure regulator in order to adjust supply pressure being the pressure of a working fluid which is supplied from the pressure regulator, and a decompression linear valve.SOLUTION: At least either of a supply current Ito a boosting linear valve at a start of a boosting process, and a supply current Ito a decompression linear valve at a start of a decompression process is switched depending on whether or not a process succeeding to these processes is the boosting process or the decompression process. Concretely, when the started process and a preceding process are the same, the supply current is decided following an anterograde boosting characteristic or an anterograde decompression characteristic, and when the processes are not the same, the supply current is decided following a retrograde boosting characteristic or a retrograde decompression characteristic. Even if the started process is accompanied by the movement of a spool, supply pressure Pcan be properly controlled.SELECTED DRAWING: Figure 5