Abstract: A mounting structure has a base member, a mounted member and a plurality of C-shaped retainer rings. The base member has an opening. The mounted member is fitted to the opening. The plurality of C-shaped retainer rings is fitted to the base member for preventing the mounted member from moving away from the base member.

Abstract: A vehicle exhaust heat recovery system includes a vapor compression type refrigeration circuit, a boiler to which the refrigerant is introduced from the refrigeration circuit and heated, and an expander for generating motive power by expanding the heated refrigerant. The refrigerant circulates in the refrigeration circuit. The boiler heats the refrigerant introduced therein using exhaust heat generated by the vehicle. The refrigerant that has been subjected to expansion is recycled to the refrigeration circuit.

Abstract: A variable displacement compressor comprises a flange, a movable body, and a detection sensor. The flange is joined to a housing and forms a flange passage for connecting a refrigerant passage and an external refrigerant circuit. The movable body is movably disposed in the flange, is movable according to a flow rate of refrigerant gas in the flange passage, and has a magnet. The detection sensor is fixed to or in the flange for detecting magnetic flux density of the magnet. The flow rate of the refrigerant gas is detected based on the magnetic flux density detected by the detection sensor. The flange is attachable to and detachable from the housing in a state where the flange is provided with the movable body and the detection sensor.

Abstract: A displacement detection device for a variable displacement compressor in which a swash plate which is connected to a piston through shoes in a housing slides relative to the shoes and rotates synchronously with a drive shaft with a wobbling motion in an axial direction of the drive shaft as the drive shaft is rotated, and an inclination angle of the swash plate is controlled thereby changing a stroke of the piston, includes a detection object provided in a first portion of an outer periphery of the swash plate where an imaginary plane passing through a point of intersection between a line connecting top and bottom dead center positions of the swash plate and an axial line of the drive shaft in perpendicular relation to the line intersects with the outer periphery of the swash plate and a detector provided in the housing so as to face the detection object.

Abstract: A mounting structure has a base member, a mounted member and a plurality of C-shaped retainer rings. The base member has an opening. The mounted member is fitted to the opening. The plurality of C-shaped retainer rings is fitted to the base member for preventing the mounted member from moving away from the base member.

Abstract: The piston type compressor includes a cylinder block, a rotary shaft, a plurality of pistons, a rotary valve and radial load transmission means. The radial load transmission means transmits a radial load caused by compression reaction force acting on the piston, which is on its compression stroke of the discharge stroke, to the rotary valve, thereby pressing the rotary valve against an inner peripheral surface of the valve chamber. The radial load transmission means has a direction turning portion for turning the radial load toward the inner peripheral surface of the valve chamber between the suction port communicating with the cylinder bore whose piston has completed the discharge stroke and the suction port communicating with the cylinder bore whose piston is on the compression stroke in a rotation direction of the rotary valve from the suction port communicating with the cylinder bore whose piston has completed the discharge stroke.

Abstract: A vehicle exhaust heat recovery system includes a vapor compression type refrigeration circuit, a boiler to which the refrigerant is introduced from the refrigeration circuit and heated, and an expander for generating motive power by expanding the heated refrigerant. The refrigerant circulates in the refrigeration circuit. The boiler heats the refrigerant introduced therein using exhaust heat generated by the vehicle. The refrigerant that has been subjected to expansion is recycled to the refrigeration circuit.

Abstract: An electric compressor includes a gas compression mechanism accommodated in a compressor housing and an electric motor for driving the compression mechanism. A circuit cover is joined to the outer surface of the compressor housing. The compressor housing and the circuit cover define an accommodating space. A motor driving circuit or driving the electric motor is accommodated in the accommodating space. The motor driving circuit is attached to the circuit cover. Accordingly, the compressor reduces manufacturing costs.

Abstract: The present invention provides a rotating apparatus. The rotating apparatus includes a rotor and a motor generator. The rotor includes a belt holder on its outer circumferential surface. The belt holder transmits power between an engine and the rotor. The motor generator is accommodated in and operably connected to the rotor. The motor generator selectively functions as at least one of a motor and a generator. The motor generator is arranged inside the belt holder such that the motor generator is surrounded by the belt holder.

Abstract: An electric compressor that is compact and efficiently exchanges the heat arisen by its inverter. The compressor includes a housing, an electric motor, and a compression mechanism accommodated in the housing. The compression mechanism is driven by the electric motor to compress a refrigerant. The inverter is attached to the outer surface of the housing to drive the electric motor. The inverter includes a switching device having a heat radiating surface. A groove is formed in the outer surface of the housing. The switching device is inserted in the groove so that the heat radiating surface contacts the wall of the groove to efficiently exchange heat with the compressor housing.

Abstract: An air conditioning system for a vehicle that is driven by a vehicular power source. The system has a compressor selectively operable by the vehicular power source and an electric motor. The electric motor is used as a drive force of the compressor when the vehicular power source is in a non-operative state. The compressor compresses refrigerant gas introduced into a suction chamber from an external refrigerant circuit. A displacement of the compressor is variable, based on a differential pressure. The compressor has a control valve that is disposed on a refrigerant passage communicating with the crank chamber. The control valve has a valve plunger for changing an opening size of the control valve to adjust pressure in the crank chamber. The air conditioning system comprises pressure sensing member, actuator, and controller. The pressure sensing member is disposed in the control valve and applies biasing force to the plunger based on pressure in the external circuit.

Abstract: A mechanical rotational device includes a housing. An end portion of a rotary shaft protrudes from a front wall of the housing. An electric rotational device is coaxial with the rotary shaft and is coupled to the end portion of the rotary shaft. The electric rotational device functions as at least one of a motor and a generator. A rotational member is coupled to the rotary shaft and has a power transmitting mechanism for transmitting power between the rotational unit and an external device. A one-way clutch is located in the power transmitting path between the rotary shaft and rotational member. The one-way clutch is located inward of the rotational member. The electric rotational device is located on or forward of the housing. At least part of the electric rotational device is located outward of the power transmitting mechanism.

Abstract: A hybrid compressor system in a vehicle air conditioner includes a variable displacement hybrid compressor, a detector for detecting information for air conditioning, a thermal load calculator and a controller. The compressor is selectively driven by an engine and an electric motor. The calculator calculates a thermal load based on the detected information. The controller compares the thermal load with a predetermined value. The controller changes displacement of the compressor to a first predetermined displacement value and selects the engine as a drive source of the compressor when the thermal load is larger than the predetermined value. The controller changes the displacement of the compressor to a second predetermined displacement value that is smaller than the first predetermined displacement value and selects the electric motor as the drive source of the compressor when the thermal load is equal to, or smaller than the predetermined value.

Abstract: An electric compressor has a compressor housing, a compression mechanism, an electric motor, a circuit cover and a motor drive circuit. The compression mechanism is arranged in the compressor housing for compressing fluid. The electric motor is arranged in the compressor housing for driving the compression mechanism. The circuit cover is connected to an outer surface of the compressor housing. The circuit cover and the compressor housing define an accommodating space. The motor drive circuit is arranged in the accommodating space for driving the electric motor and includes a substrate and a switching device that is mounted on the substrate on the far side relative to the circuit cover. The switching device is pressed against the compressor housing as the motor drive circuit is fastened between the compressor housing and the circuit cover in the accommodating space due to connection of the circuit cover to the compressor housing.

Abstract: A motor drive circuit for driving an electric motor in an electric compressor has a substrate and a plurality of electrical components. The compressor includes a compressor housing having a circumferential wall around a central axis of the compressor. The circumferential wall has a substantially cylindrical surface. The substrate is arranged outside the circumferential wall and includes a first portion and a second portion. The first portion is closer to the central axis than the second portion. The electrical components are mounted on the substrate on the near side relative to the central axis and include short electrical components that have relatively short height from the substrate and tall electrical components that have relatively tall height from the substrate. The electrical components line the cylindrical surface of the circumferential wall in such a manner that the short and tall electrical components are respectively arranged at the first and second portions.

Abstract: An air conditioning system for a vehicle that is driven by a vehicular power source. The system has a compressor selectively operable by the vehicular power source and an electric motor. The electric motor is used as a drive force of the compressor when the vehicular power source is in a non-operative state. The compressor compresses refrigerant gas introduced into a suction chamber from an external refrigerant circuit. A displacement of the compressor is variable, based on a differential pressure. The compressor has a control valve that is disposed on a refrigerant passage communicating with the crank chamber. The control valve has a valve plunger for changing an opening size of the control valve to adjust pressure in the crank chamber. The air conditioning system comprises pressure sensing member, actuator, and controller. The pressure sensing member is disposed in the control valve and applies biasing force to the plunger based on pressure in the external circuit.

Abstract: Compressors may include a compressor housing having a compression chamber defined within the compressor housing. The compression chamber is preferably arranged and constructed to compress and discharge a fluid drawn into the compression chamber. A unit housing may be coupled to the compressor housing. A control device may be disposed within the unit housing and the control device preferably controls electric components of the compressor. Further, a suction passage is preferably defined to introduce the fluid into the compression chamber. The suction passage preferably penetrates through the unit housing so as to directly cool the control device due to the fluid flowing through the suction passage.

Abstract: A controller for controlling the displacement of a variable displacement compressor that does not require an engine ECU to presume the load torque of the compressor and thus does not require the preparation of a load torque presumption map for each type of vehicle. The displacement controller includes a control valve arranged in the compressor to vary the displacement of the compressor in accordance with an instruction signal. A first computer is connected to the control valve. The first computer provides the instruction signal to the control valve to adjust a torque of the compressor to a target torque that is in accordance with a torque target signal.

Abstract: A compressor is actuated by a motor and varies the displacement by the operation of an electromagnetic actuator. A drive unit of the compressor includes a power source, a motor drive circuit located on a power supply path between the motor and the power source, and an actuator drive circuit located on a power supply path between an electromagnetic actuator and the power source. The motor drive circuit drives the motor and the actuator drive circuit drives the electromagnetic actuator. The motor drive circuit and the actuator drive circuit share a smoothing circuit and a filter circuit. Therefore, the actuator drive circuit does not require its own smoothing circuit and a filter circuit. This reduces the number of parts of the drive unit, thereby reducing the size and the cost of the drive unit.

Abstract: A displacement control apparatus controls the displacement of a variable displacement controller. A drive shaft of the compressor is driven by an engine. Torque acting on the drive shaft represents the displacement. The apparatus includes a control valve, an air conditioner controller and a compressor controller. The control valve changes the compressor displacement. The air conditioner controller produces a torque setting signal, which represents a target torque, to the compressor controller. The compressor controller changes the valve opening based on the torque setting signal such that the actual load torque matches the target torque value. Accordingly, the compressor is controlled according to the torque. The air conditioner controller may send the torque setting signal to an engine controller, which eliminates the need for load torque maps.