Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.

Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.

Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.

Abstract: A compressor includes a compression chamber for compressing working fluid within an inside thereof, a discharge port, through which the working fluid flows out from the compression chamber, and a discharge valve for opening or closing the discharge port. The discharge valve includes a valve seat portion provided in the discharge port and having a tapered surface, so that a cross-section area of the discharge port comes to be large from a side of the compression chamber. The valve has a projection portion having a tapered surface in contact with the tapered surface of the valve seat portion. A spring is provided on a member formed in one body with the valve seat portion, for positioning the valve to the valve seat portion, wherein clearance volume of the discharge port is reduced, so as to improve the performances thereof.

Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.

Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.

Abstract: A displacement type fluid machine has a first lubricating fluid pump, provided at the rotating shaft and immersed in the lubricating fluid stored in the lubricating fluid-storing chamber, for feeding lubricating fluid to a first one of the two sliding portions via a lubricating fluid-guiding path formed at the rotating shaft; a second lubricating fluid pump, provided at the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and for feeding that lubricating fluid to a second one of the two sliding portions; and a third lubricating fluid pump, which is provided at or near the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and for feeding that lubricating fluid to a third one of the two sliding portions.

Abstract: There is provided a scroll compressor having high overall adiabatic efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.

Abstract: There is provided a scroll compressor having high overall efficiency and reliability in a wide pressure operating range. A backside excess-suction-pressure region is provided such that pressure higher than suction pressure by a constant value is applied to a backside of scroll members to produce an attractive force to attract both scroll members. A control bypass is also provided for communicating compression chambers with a discharge system only when pressure in the compression chambers is high.

Abstract: A transmission for a vehicle has a pair of input shafts and an output shaft parallel to the input shafts. A plurality of drive gears is installed on the input shafts, and a plurality of driven gears are installed on the output shaft and meshed with the drive gears, respectively. Gear selecting mechanisms is provided respectively on the shifting input shafts to select one of the drive gears. A power transmitting mechanism is installed to the input and output shafts to transmit power from one of the input shafts to the other input shaft. First and second clutches are installed to the input shafts, respectively to fix the drive gears on the input shafts by the engagement thereof. An idler gear driven by the power transmitting mechanism is installed to the output shaft. A third clutch installed to the output shaft as to be capable of fixedly connecting the output shaft and the idler gear.

Abstract: A displacement type fluid machine is composed of: a first lubricating fluid pump for feeding lubricating-oil which is provided at the rotating shaft, and is immersed in the lubricating fluid stored in the lubricating fluid-storing chamber, for feeding lubricating fluid to a first one of the two sliding portions via a lubricating fluid-guiding path formed at the rotating shaft; a second lubricating fluid pump which is provided at the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and feeding the lubricating fluid, which has been fed via the lubricating fluid-guiding path, to a second one of the two sliding portions; and a third lubricating fluid pump which is provided at or near the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and feeding the lubricating fluid, which has been fed via the lubricating fluid-

Abstract: A compressor, comprising: a compression chamber for compressing working fluid within an inside thereof; a discharge port, through which the working fluid flows out from the compression chamber; a valve means for opening or closing the discharge port; a valve seat portion being provided in the discharge port and having a shape of curved surfaces, so that a cross-section area of the discharge port comes to be large from a side of the compression chamber; a valve having a projection portion having a curved surface in contact with the curved surface of the valve seat portion; and a means being provided on a member formed in one body with the valve seat portion, for positioning the valve to the valve seat portion, wherein clearance volume of the discharge port is reduced, so as to improve the performances thereof.

Abstract: In a rotary piston compressor and refrigerating equipment employing the rotary piston compressor, the interior of a cylinder chamber is divided into a suction chamber and a compression chamber by a vane which is formed unitarily with a roller. The rotary bushing on the compression chamber side which supports the vane is so arranged as to be moved with a specific pressure, so that a communicating passage for communication between the compression chamber and a space on the discharge side will be opened and closed with the movement of the rotary bushing on the compression chamber side.

Abstract: A transmission for a vehicle has a pair of input shafts and an output shaft parallel to the input shafts. A plurality of drive gears is installed on the input shafts, and a plurality of driven gears are installed on the output shaft and meshed with the drive gears, respectively. Gear selecting mechanisms is provided respectively on the shifting input shafts to select one of the drive gears. A power transmitting mechanism is installed to the input and output shafts to transmit power from one the input shafts to the other input shaft. First and second clutches are installed to the input shafts, respectively to fix the drive gears on the input shafts by the engagement thereof. An idler gear driven by the power transmitting mechanism is installed to the output shaft. A third clutch installed to the output shaft as to be capable of fixedly connecting the output shaft and the idler gear.

Abstract: A rotary compressor is provided with a cylinder which defines a cylinder chamber and a piston disposed in the cylinder chamber. The piston includes a roller which performs a revolving motion within the cylinder chamber and a vane which partitions the interior of the cylinder chamber into a suction chamber and a compression chamber. A small space is provided so as to communicate with the compression chamber in only a predetermined section without communicating with the suction chamber so as to suppress noise generated by a pressure fluctuation in the interior of a compression chamber and, at the same time, can prevent the occurrence of a loss induced by re-expansion of a refrigerant remaining in a small space and a loss induced by return of the refrigerant to a suction chamber.

Abstract: An orbiting fluid machine has a feature that the speed of sliding movement is low, while vibrations are small, its performance is lowered when the rotational speed becomes high, and this problem is resolved by the following structure. A displacement fluid machine includes a displacer making an orbital motion within a casing into which a working fluid is drawn, thereby drawing and discharging the working fluid, in which an oil retaining mechanism or a seal mechanism is provided at each of opposite end surfaces of the displacer. This results that, axial gaps at the end surfaces of the displacer are effectively sealed so as to reduce a leakage loss, thereby achieving a high performance and a high reliability.

Abstract: An orbiting fluid machine has a feature that the speed of sliding movement is low, while vibrations are small, its performance is lowered when the rotational speed becomes high, and this problem is resolved by the following structure. A displacement fluid machine includes a displacer making an orbital motion within a casing into which a working fluid is drawn, thereby drawing and discharging the working fluid, in which an oil retaining mechanism or a seal mechanism is provided at each of opposite end surfaces of the displacer. This results that, axial gaps at the end surfaces of the displacer are effectively sealed so as to reduce a leakage loss, thereby achieving a high performance and a high reliability.

Abstract: Disclosed herein is a control apparatus for an automatic transmission. The control apparatus comprises an oil pressure control section for controlling engagement transition oil pressure which is supplied to friction engaging elements so that what is changed by a speed-change is changed along a locus of a predetermined target value. Also, the control apparatus comprises an engine torque control section for controlling a quantity of change in engine output torque during a speed-change so that a parameter whose value changes in parallel to a speed changing operation has an optimum change characteristic. The engagement transition oil pressure is corrected based on the quantity of change in the engine output torque in controlling the engagement transition oil pressure, and the quantity of change in the engine output torque is corrected based on the engagement transition oil pressure in controlling the quantity of change in the engine output torque.

Abstract: The present invention enables a scroll fluid machine to have a maximum design volume ratio without increasing an outside dimension of scrolls and allows the basic spiral curve of the scroll to be configured with simple curves. The basic spiral curve of a scroll wrap comprises a group of concentric semicircles, a group of circular arcs having a center different from that of the group of semicircles, and a group of straight lines or curves connecting the group of semicircles and the group of circular arcs together, and a diameter of the outer-most circumferential semicircle of a fixed scroll member is twice as large as radius of the outer-most circumferential circular arc of an orbiting scroll member. In addition, an outer diameter of an end plate of an orbiting scroll is equal to an outer diameter of the outer-most circumferential wrap of the scroll.

Abstract: A horizontal-installation-type scroll compressor requiring small installation space adopts a technique which can reduce the amount of refrigerating machine oil circulating through the refrigeration cycle. By using this scroll compressor, an air conditioner is provided whose unit body has a reduced depth and which has satisfactory ventilation efficiency and cyclic efficiency.The scroll compressor includes a closed container which is separated into a section lodging an electric motor and a compression mechanism and a section where a discharge pipe is provided. Refrigerating machine oil is stored in the section including the discharge pipe in order to ensure the requisite amount of refrigerating machine oil. An oil separation mechanism is provided in the passage of the refrigerant gas so that refrigerant gas containing little amount of refrigerating machine oil may be sent out from the discharge pipe.