| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulsation reduction device capable of suppressing pulsation with a compact structure which can be easily worked. SOLUTION: Part of pressure pulsation of oil in a delivery passage 21 of a piping enters a pulsation reduction flow path 35 having predetermined length from an opening part 36, reflects at a closed end 37, and merges again and interferes with pulsation in the delivery passage 21 of the piping. Consequently, pulsation is suppressed. Since the pulsation reduction flow passage 35 of the predetermined length necessary for reducing pulsation is formed by using a groove 32 formed on an outer circumference surface 31a of a plug 31 with bent in a spiral shape as a base and blocking the groove 32 by making an inner circumference surface 33a at a cylindrical space part abut on the outer circumference surface 31a, pulsation reduction flow path length is secured with the compact structure which can be easily worked to suppress pulsation. COPYRIGHT: (C)2009,JPO&INPIT
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