| 摘要 |
PROBLEM TO BE SOLVED: To always stably reduce pulsating pressure of a delivery port regardless of a variation in an engine speed. SOLUTION: The volume of a plurality of pump rooms 14 is continuously increasingly and decreasingly changed by driving of an engine, and oil sucked in from a suction port 15 is delivered to the delivery port 16. In such an oil pump 1, an oil chamber 18 is arranged, and its oil chamber 18 is conducted to the delivery port 16 by a communicating hole 17 in a vertical upper side position of the chamber 18. The pulsating pressure of the delivery port 16 is reduced by the oil chamber 18. Since the oil chamber 18 is conducted in a vertical upper part to the delivery port 16, even if the oil of the delivery port 16 slips out, the oil in the chamber 18 is held. COPYRIGHT: (C)2009,JPO&INPIT
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