| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a by-pass pressure regulator which can generate an uniformly regulated output pressure and a uniformly regulated flow rate. <P>SOLUTION: The by-pass pressure regulator of liquid fuel has a body, a valve chamber formed by the body, a valve seat, and an inside continuous peripheral surface. The inside continuous peripheral surface partially forms the valve chamber, and is arranged on a downstream side in the axial direction of the valve seat, and the radius of the inside continuous peripheral surface increases with the distance toward the downstream side in the axial direction of the valve seat. The widened valve head of the pressure regulator is at least partially arranged in the valve chamber, and can move in the axial direction within the range from the closed position engaged with the valve seat to the closed position separated from the valve seat. The valve head has an outer peripheral edge. When the valve head is positioned at the closed position, the outer peripheral edge is positioned in the neighborhood of the inside continuous peripheral surface of the valve chamber. The inside continuous peripheral surface is provided with a cylindrical portion and an enlarged portion arranged on the downstream side of the cylindrical portion. The outer peripheral edge of the valve head is arranged in parallel with the cylindrical portion in the axial direction when the valve head is located in the closed position, and is arranged in parallel with the enlarged portion in the axial direction when the valve head is located in the opened position. <P>COPYRIGHT: (C)2007,JPO&INPIT |
