| 摘要 |
PURPOSE:To enable oil in an oil tank to be pumped up with remaining air within a cylinder bore quickly discharged at the time of a test run. CONSTITUTION:A drive shaft 6 is supported within a housing 4, a cylinder block 9 is fitted in the drive shaft 6 in such a way that it can be synchronously rotated, and a piston 11 housed in its cylinder bore 10 is moored to a swash plate 17 which is rotatably disposed within a crank chamber 5 via a retainer 26 and a shoe 27. A return spring 28 is disposed between the swash plate 17 and the housing 4 wherein the spring 28 energizes the swash plate in such a way that the stroke of the piston 11, that is, its discharge capacity is lessened with the tilt angle of the swash plate decreased at all times. In opposition to this, a control cylinder 31 which makes its stroke of the piston 11 large with the tilt angle of the swash plate 17 increased, is provided for a rear end cover 3. An adjusting bolt 44 which makes a control piston 32 advance, is threadedly engaged with the cover 3. Only when a pump is tested, remaining air within the bore 10 is discharged out with its displacement kept intermediate. |
