| 摘要 |
PURPOSE:To achieve the stabilization of oiling and the enhancement in lubricating efficiency by providing oil filler ports on the lubricating oil supply passages, through which lubricating oil id directly supplied to an operating chamber, in such a position that the closing timing of the oil filler ports due to a rotor is immediately before the closing timing of communicating passage. CONSTITUTION:In an intermediate housing 2 positioned between two cylinders, a communicating passage 19, through which the operating chamber 8 under the compression strike in the cylinder on one side is communicated with the operating chamber 8 under intake stroke in the cylinder on the other side, is formed. In the above constitution, to the discharge ports 23, 24 of a metering oil pump 21 lubricating oil supply passages 25, 26 through which lubricating oil is directly supplied to the operating chambers 8 are connected, and the oil filler ports 25a, 26a at the respective downstream ends are opened to the operating chambers 8 through the inner circumferential surface of a rotor housing 3. And the respective oil filler ports 25a, 26a are provided in such a position that the closing timing of the oil filler ports 25a, 26a for the operating chamber 8 under compression stroke is immediately before the closing timing of the communicating passage 19. |
