| 摘要 |
A solenoid valve has a linear solenoid, a common cylindrical sleeve, one axial end of which is fixed to the linear solenoid, and a common spool movably accommodated in the sleeve, and a return spring. The solenoid valve further has a first three-way valve formed by a first portion of the sleeve and a first portion of the spool for operating as a normally-closed type valve, and a second three-way valve formed by a second portion of the sleeve and a second portion of the spool for operating as a normally-opened type valve. |
