| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact fluid pressure adjusting device that enables simple piping, and to provide a fuel supply device. <P>SOLUTION: A pressure regulator 20 includes a housing 21 having a barrier-shaped pressure adjusting member 22 therein, and a pressure adjusting chamber 23 which is arranged in the housing 21, and has a plurality of fluid pressure introduction passages 28, 29 which displace the pressure adjusting member 22 in a valve opening direction by making fluid pressure act on one face of the pressure adjusting member 22. An area of a pressure receiving region in which the pressure adjusting member 22 receives the fluid pressure at its one face side is variably set by an effect that the fluid pressure is selectively introduced into the fluid pressure introduction passages 28, 29, set pressure in the pressure adjusting chamber 23 is adjustable according to the area of the pressure receiving region, a through-hole 25b is formed at a variable valve body 25 of the pressure adjusting member 22, and a communication part 32 is formed which makes the fluid pressure introduction passages 28, 29 and the through-hole 25b communicate with each other at the valve opening of the variable valve body 25 of the pressure adjusting member 22. <P>COPYRIGHT: (C)2012,JPO&INPIT |
