| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems on a conventional shockless valve that a plunger is slowly moved and stopped beyond a preset stop position when a room temperature is low and the viscosity of oil is high, and the plunger is quickly moved and stopped short of the stop position when the room temperature is high and the viscosity of oil is low. SOLUTION: This shockless valve includes a plunger 5 to be moved in a housing 4 against the spring force of a spring 6, attracted to a stator 2 and moved back from the positions of ports 41b, 41c of an oil path when a coil 1 is energized, and to be moved to the port positions with the spring force of the spring when it is deenergized, and having a valve rod portion 52 for closing the port on the downstream side of an oil flow when the oil flow is produced in the oil path, a temperature sensor 7 for detecting the temperature of the housing as the temperature of oil, and a control circuit for quickening the deenergization of the oil when the temperature sensor detects the temperature of the oil to be low and for slowing the denergization of the coil when it detects the temperature of the oil to be high to stop the plunger at a preset stop position. COPYRIGHT: (C)2009,JPO&INPIT
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