| 摘要 |
PURPOSE:To exactly grasp the amount of the stroke to stabilize control of the displacement by controlling the pressure in a swash plate chamber by the relative relationship between the positions of a first opening and closing member coupled to the tilting of a swash plate, and a second opening and closing member positioned by a member signal. CONSTITUTION:When current flowing to a coil 40 is set at a constant value during controlling the displacement, a moving part 43 is stopped at a specified position in the axial direction by a balance between electromagnetic force and spring force. When a blowby gas leaks from a piston 11 under the condition, the pressure in a swash plate chamber 10 is raised, and a force acting on the backside of the piston pulls a piston support 24 through a connecting rod 33 to reduce the tilting angle of a swash plate 12. A sleeve 21 and a stroke rod 46 are interlocked with the tilting angle to be moved to the right. The large diameter part 461 of the rod 46 is then stabilized at a position at which a communication hole 45 of the moving part 43 is opened by a very small area in relation to the position of the moving part 43. Thus, the blowby gas is relieved to a suction chamber 8 through the communication hole 45, and the pressure in the swash plate chamber 10 is kept constant to stabilize the angle of the swash plate. |
