Abstract: A variable capacity compressor includes a compression chamber that compresses a working fluid, an inlet chamber to house the working fluid to be compressed, a discharge chamber to house the working fluid compressed in the compression chamber and discharged therefrom, a control pressure chamber to house a swash plate rotating in accordance with a rotation of the drive shaft, a supply passage to facilitate communication between the discharge chamber and the control pressure chamber, a bleed passage to facilitate communication between the control pressure chamber and the inlet chamber, a first control valve including a first valve portion to adjust an opening degree of the supply passage, a second control valve provided on the bleed passage and including a spool housing recess formed on the bleed passage, and a back pressure chamber between the spool and a bottom of the spool housing recess.

Abstract: [Object] To provide a variable capacity compressor configured to achieve an enhancement of an activation performance of a compressor and reduce an amount of internally circulating refrigerant during an intermediate stroke in a simple structure.

Abstract: A variable-capacity compressor capable of improving starting performance of the compressor and eliminating the risk of the compressor becoming uncontrollable due to contamination or the like in a refrigerant is disclosed. An opening passage allowing the control pressure chamber to communicate with a suction chamber is provided separately from a bleed passage, a valve housing chamber is formed on the opening passage, and the opening passage is formed by including an upstream-side opening passage allowing the control pressure chamber to communicate with the valve housing chamber and a downstream-side opening passage allowing the valve housing chamber to communicate with the suction chamber. A valve body housed so as to open/close the downstream-side opening passage and a biasing means biasing the valve body in an opening direction are provided. The valve housing chamber is connected to the downstream side of a pressure control valve provided on a supply passage.

Abstract: The invention provides a refrigerant compressor comprising a shaft (16) having an axial direction (A), a hub (14) mounted on the shaft (16) and an inertia disk (20), the inertia disk (20) being directly connected to the hub (14) in a torque-transmitting manner.

Abstract: In fuel injection nozzle for injecting fuel into an internal combustion engine of a type wherein a well is provided in the tip of a nozzle body and a rotary valve is disposed in the well and the area of nozzle holes formed in the enclosing wall bounding the well is changed by changing the angle of this rotary valve, the enclosing wall bounding the well has a conical surface and the rotary valve has at its upper end a pressure-receiving surface for receiving the pressure of pressurized fuel and has at its periphery a conical surface of an angle matching the angle of the conical surface of the enclosing wall and a plurality of fuel passages having one end opening at the pressure-receiving surface are provided spaced in the circumferential direction in the rotary valve and the fuel passages open at a portion of the conical surface of the rotary valve facing the nozzle holes.

Abstract: A flowmeter which obtains the flow rate of a fluid by detecting the rotational speed of an impeller is provided with a transmitter for transmitting a laser beam or ultrasonic wave to the tip end of the rotating impeller, a receiver for capturing the laser beam or ultrasonic wave reflected by the impeller, and a data processing unit for calculating the difference between the frequency of signals captured by the receiver and the frequency of signals transmitted by the transmitter and for calculating the rotational speed of the impeller based on the calculated values.