| 摘要 |
PURPOSE:To prevent chattering of a vane by a method wherein a means for changing the area of a flow path in accordance with the rotating angle of a rotor is provided in an oil flow path from an oil separating means to a low pressure side through a vane groove. CONSTITUTION:An R-plate 11 is provided with a choking means and oil, whose pressure is regulated here, enters into the back pressure chamber of the vane when the communicating groove 36 of the bottom of the vane groove 4 of the rotor 8 is communicated with a through hole 35 provided at a sliding part 33, then, imresses the back pressure of the vane. When the communicating groove 36 is not communicated with the through hole 35, the pressure of an annular oil groove 37 at the side part of the R-plate 11 is impressed as the back pressure of the vane. |
