| 摘要 |
PURPOSE:To simplify manufacture of a device in the caption by connecting the first and the second output ports of a distributing valve to the first and the second pressure regulating valves respectively so as to make the pressure regulating valves the same specification. CONSTITUTION:A distributing valve 44 is divided into a bore 81 in the shape of a cylinder communicated with the first output port 48 and the second output port 50, and the first valve chamber 52 communicating with the first output port 48 and the second valve chamber 54 communicating the second output port 50 by being engaged slidingIy in this bore 51. Due to the difference of the pressure receiving area, the hydraulic pressure P2 in the second valve chamber 54 is always higher than the hydraulic pressure P1 in the first valve chamber 52 by the certain value. The first pressure regulating valve 68 regulates the first line pressure Pl1. and the second pressure regulating valve 70 for the second line pressure Pl2 respectively. And despite that the difference between Pl1 and Pl2 is positive or negative, a certain differential pressure is formed in Pl1 and Pl2 by the distributing valve 44. |
