| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem where pulsation of a pressure regulation valve is not effectively restrained because a control oil chamber communicates with a feedback port of a linear solenoid valve through an orifice to cause a time-lag. SOLUTION: Signal pressure Ps from an output port 7b of the linear solenoid valve 1 acts on the feedback port 7c through oil passages 15a and 15b, and is supplied to the control oil chamber 2e of a pressure regulation valve 2 through an oil passage 25 to regulate the output pressure from an output port 2b of the regulation valve. When pulsation is generated in the pressure regulation, it is propagated to the oil chamber 2e. The oil pressure variation of the oil chamber directly acts on the feedback port 7c through the oil passage 25, and the solenoid valve 1 outputs the signal pressure so as to restrain the oil pressure variation. COPYRIGHT: (C)2004,JPO
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