| 摘要 |
PURPOSE:To provide a specific throttle characteristic by coaxially providing a spool forming a first variable throttle with an annular groove of an inner hole of a joggling of a valve body, and a poppet forming a second variable throttle on a tapered hole of the spool. CONSTITUTION:A variable throttle has a spool 12 assembled into a large diametral part of an inner hole 11c of a joggling of a valve body 11, and the spool has a circular hole 12b in the diametral direction forming a first variable throttle S2 with an annular groove 11d in the intermediate part. The spool 12 is energized in the right by a first spring 13. A poppet 15 is assembled into a small diametral part of the inner hole 11c of the valve body 11, and the poppet has a tapered part 15a forming a second variable throttle S2 with a tapered hole 12a of the spool 12 in the right end, and the poppet is engaged with a plunger 18 pressed by an electromagnetic actuator, and is energized in the right by a second spring 16. |
