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 variable capacity wobble plate compressor includes a drive shaft, a rotating member rigidly fitted on the drive shaft for rotation in unison with the drive shaft, a tilting rotating member mounted on the drive shaft in a slidable manner, and a pair of link members connecting the rotating member and the tilting rotating member to each other. The rotating member has one radial end portion thereof formed with a pair of link member-holding portions extending in parallel with each other. The pair of link members has one ends thereof pivotally connected to the pair of link member-holding portions by a first connecting member, and other ends thereof connected to the tilting rotating member by a second connecting member.

Abstract: A heater core mounting structure 20 for mounting any one of multiple stacked-plate heater cores 3A of different thickness in a heater case 2 without modification of the heater case 2 comprises a spacer 21 provided with engagement portions 26 configured to engage end portions 5A of the heater core 3A. The heating core mounting structure 20 enables mounting of different sized heater cores 3A at low cost, prevents shift of the stacked plates 5 during mounting, and protects the stacked end portions 5A.

Abstract: A reciprocating compressor includes a cylinder block, a plurality of cylinder bores extending through the cylinder block, and a plurality of pistons slidably received in the plurality of cylinder bores, respectively. The cylinder block and the pistons are each formed of an aluminum-based material, and each of the plurality of pistons has a peripheral surface thereof covered with a thermal sprayed coating which is formed of a material having a smaller coefficient of linear expansion than one of the aluminum-based material. The thermal sprayed coating covering each of the pistons has at least one slit formed thereacross in a manner such that each of the at least one slit extends from the one end of each of the pistons to the other end of the same whereby part of the peripheral surface of the piston is exposed through the at least one slit.

Abstract: There is provided an electromagnetic clutch which is capable of reducing a variation in torque (reaction force) from a refrigerant compressor. The electromagnetic clutch includes a hub rigidly fitted on a drive shaft, the hub having a flange portion, a rotor which rotates about the drive shaft, a magnetic coil arranged within the rotor, an armature plate which is attracted into abutment with the rotor when the magnetic coil is energized, and a plurality of spring members interposed between the flange portion of the hub and the armature plate along a circumference of the rotor, for connection between the flange portion of the hub and the armature plate.

Abstract: A variable capacity swash plate compressor has a retainer mounted on its swash plate in a relatively rotatable manner with respect to the swash plate for supporting a plurality of shoes, and an annular retainer support plate for supporting the retainer in a state held in surface contact with one face of the retainer. The retainer support plate has an annular recess formed on a cylinder block-side face thereof, for holding lubricating oil therein, and a lubricating oil supply hole formed through a compressing piston-side portion thereof which does not receive tensile forces from pistons in the suction stroke, for supplying the lubricating oil from the annular recess to the one face of the retainer therethrough.

Abstract: A swash plate of a variable capacity swash plate compressor has a front-side sliding surface and a rear-side sliding surface. Pairs of substantially hemispherical shoes each perform relative rotation on the front-side and rear-side sliding surfaces of the swash plate, respectively, with respect to the circumference of the swash plate as the drive shaft rotates. A plurality of pistons each have one end thereof formed therein with a pair of concave support portions for each slidably supporting the shoe. At least one of the front-side and rear-slde sliding surfaces of the swash plate has a mounting recess formed at an outer peripheral portion thereof, the outer peripheral portion receiving no load which acts on the at least one of the front-side rear-side sliding surfaces of the swash plate. The mounting recess is used for assembling the each pair of the pairs of shoes with the swash plate and the pair of concave support portions at the one end of a corresponding one of the pistons.

Abstract: A liquid tank used in an air-conditioning system to remove air and water from refrigerant received from a condenser 8 before passing it to an evaporator 11 comprises a tank body, a refrigerant inlet port and a refrigerant outlet port. In a first aspect of the invention which ensures excellent air-liquid separation, easy assembly, low cost, simple structure and ready mounting on the condenser 8, the refrigerant inlet port section 33 is formed at a lower portion of the tank body 31, the refrigerant outlet port section 34 is formed below the refrigerant inlet port section 33 and a cylindrical partition 32 is provided at a lower portion of the tank body 31 to stand higher than the refrigerant inlet port section 33 and define between itself and the inner wall of the tank body 31 an induction space 35 into which the refrigerant inlet port section 33 opens and define therein a liquid pooling space 36 with which the refrigerant outlet port section 34 communicates.

Abstract: In the process steps a tentative value (m) of a deviation in a turning angle of a rotor of the stepping motor is determined each time the stepping motor runs. A cumulative amount of the tentative values (m) forms an estimated value (S) of the deviation in the turning angle of the rotor of the stepping motor. This estimated value (S) of the stepping motor. This estimated value (S) of the deviation is stored in a predetermined memory area. When an ignition switch is turned on, it is judged whether or not the estimated value (S) of the deviation thus stored until the ignition switch is turned on, exceeds a predetermined value. When it is judged that such estimated value (S) exceeds the predetermined value, an initial setting of the stepping motor is made.

Abstract: An electromagnetic wave absorber comprises a substrate made from a material which rarely absorbs a microwave and an electromagnetic wave absorbing layer formed on the surface of the barrier of the substrate, the electromagnetic wave absorbing layer is made from a mixture of an electroconductive metal oxide and an insulating material, and the impedance of the electromagnetic wave absorbing layer is adjusted to the impedance of a medium through which the microwave is transmitted such that reflection power ratio becomes 10 dB or more.

Abstract: In order to rotationally drive a gear material (3) when the gear material (3) is gear machined using a hob (not shown), a drive hole (34) having a circular configuration in section and extending on an axis L of the gear material (3) is formed in an end face (3e) of the gear material (3) and a shaft member (4) having a polygonal configuration is employed. The distance from an axis of this shaft body (4) to each angular portion (4a) is larger than the radius of the drive hole (34). The distance from the axis of the shaft member (4) to each side portion (4b) of the shaft member (4) is smaller than the radius of the drive hole (34). The shaft member (4) is fitted, under pressure, in the drive hole (34) and the gear member (3) is rotationally driven through this shaft member (4).

Abstract: A solenoid valve drive system includes a step-up circuit that produces a first high voltage by using a switching device to on/off control supply of current from a battery to a step-up coil and stores the first high voltage in a first capacitor as a high voltage for initial high-voltage driving of a solenoid valve, a second capacitor, and a discriminating circuit for discriminating the level of the charge voltage of the second capacitor. The second capacitor is charged by high voltage from the step-up circuit only when the charge voltage of the second capacitor has not reached a prescribed level. The system can efficiently produce two types of high voltages without enlarging circuit size.

Abstract: A pulse width of a drive pulse of a brushless motor is modulated in correspondence to a setting signal for setting the rotation rate. Switching control for the current supplied to exciting coils is implemented by using an output signal from Hall elements for detecting the position of the rotor and the drive pulse. Correction of the pulse width of the drive pulse is implemented to ensure that the average voltage is maintained at a constant level even when the source voltage fluctuates so that stable rotation can be maintained over the entire rotation rate range even when the source voltage supplied to the brushless motor fluctuates and so that the fuse can be prevented from melting and the motor can be prevented from becoming damaged, which may otherwise be caused by a fluctuating source voltage.

Abstract: In a laminated heat exchanger, an intake portion and an outlet portion for heat exchanging medium are provided at one end portion in the direction of lamination. The intake portion is made to communicate with a most upstream pass distance from the one end portion in the direction of lamination via a communicating pipe, and the outlet portion is made to communicate with the most downstream pass at one end portion in the direction of lamination. The communicating pipe is further made to communicate with an odd-numbered pass in the vicinity where the odd-numbered pass changes from the even-numbered pass that immediately precedes it. In addition, the intake portion at one end portion in the direction of lamination is made to communicate with the pass immediately preceding the most downstream pass.

Abstract: In order to achieve an improvement in the recyclability of a heat exchanger by mounting a seal material for sealing the gap between the heat exchanger and the case in which the heat exchanger is mounted without using an adhesive or the like at the heat exchanger and thus facilitating the removal of the seal material, an arrangement for mounting the seal material is provided at a specific position at an external circumferential portion of the heat exchanger. For instance, a guide is provided by inwardly bending the central portion in the direction of airflow of each of the projecting pieces formed at the tube elements at one end in a lengthwise direction or by cutting and raising the central portion perpendicularly. A pair of retaining portions are formed at specific positions at an external circumferential portion located at the sides of the heat exchanger relative to the direction of airflow to hold the two ends of the seal material with the pair of retaining portions.

Abstract: A variable capacity swash plate compressor includes a plurality of pistons slidably received in a plurality of cylinder bores, respectively, a rotating member rigidly fitted on the drive shaft, for rotation in unison with the drive shaft, a swash plate mounted on the drive shaft in a manner tilted with respect to an imaginary plane perpendicular to the drive shaft and axially slidable along the drive shaft, and a linkage interposed between the rotating member and the swash plate, for tiltably connecting the swash plate to the rotating member to cause the swash plate to rotate in unison with the rotating member. The link member is offset by a predetermined amount from a boundary between a compressing piston-side area which receives compression reaction forces from ones of the pistons during the compression stroke and a suction piston-side area which receives tensile reaction forces from ones of the pistons during the suction stroke, toward the compressing piston-side area.

Abstract: An externally threaded portion 31 of a valve body 10 is threadingly engaged with an internally threaded portion Hb formed on the opening portion side of an attachment hole Ha. A flange portion 32 of the valve body 10 is brought into abutment with an upper surface Hc of the housing H, so that the valve body 10 is fixed to the housing H. A lower end of the valve body 10 is located away from a bottom surface of the attachment hole Ha. A valve seat 23 and a guide hole 24 are formed inside the valve body 10. The valve seat 23 and the guide hole 24 are located on a lower side than the externally threaded portion 31. A valve element 50 is provided inside the valve body 10. This valve element 50 includes a seat portion 51 rest on the valve seat 23, and a guide portion 55 slidably engageable with the guide hole 24. A lower end opening portion of the guide hole 24 is shielded with a shielding plate 25. An orifice 25a is formed in the shielding plate 25.

Abstract: A vane compressor has at least one of a front-side member and a rear-side member thereof formed with a suction chamber opening toward a cam ring, which has a substantially arcuate or annular shape and extends around a drive shaft. The cam ring has one end face formed with a refrigerant inlet port for supplying a low-pressure refrigerant into compression chambers formed between vanes. Alternatively, a front head is arranged on one end face of the cam ring. A shell encloses another end and an outer peripheral surface of the cam ring and holds a movable plate in a state opposed to the other end face of the cam ring such that the movable plate can be moved along a central axis of the drive shaft. An inside of the shell and the movable plate defines a high-pressure chamber therein. Each adjacent pair of the vanes, the front head, and the movable plate defines a compression chamber therein.

Abstract: A device for driving a DC brushless motor by outputting commutation control signals based on voltages induced in the drive windings includes a position detection circuit having low-pass filter circuits that remove a chopping frequency component and have a phase lag of 60-90.degree. at maximum motor rotational speed, a rotational frequency computing section, and a phase correction amount computing section that effects a computation based on the rotational frequency computed by the rotational frequency computing section to set the commutation time point to produce a 30.degree. phase lag in a rotational speed range in which the phase lag falls in the range of 0.degree. to less than 30.degree. and to produce a 90.degree. phase lag in a rotational speed range in which the value of the phase lag falls in the range of 30-90.degree.. The device achieves high efficiency at optimum commutation timing in the high rotational speed region and suppresses vibration and noise in the low rotational speed region.

Abstract: A a cartridge type delivery valve assembly in which a valve seat surface and a valve are integrated in order to assure good seating characteristics in the delivery valve. The delivery valve assembly is formed by fixing together a valve holder provided with delivery holes, a roll valve that is mounted along the internal surface of the valve holder to freely open and close the delivery holes and a valve stopper that fixes the roll valve onto the valve holder and regulates the lift quantity of the roll valve, in an integrated manner using coupling members and the delivery valve assembly thus achieved is mounted in a valve insertion space.