Abstract: A ferrite core is provided. This ferrite core has high saturation flux density Bs at a high temperature of 100° C. or higher, and in particular, at around 150° C., and has excellent magnetic stability at a high temperature, experiencing reduced deterioration of magnetic properties, and in particular, reduced core loss at such high temperature (even by trading off some improvement in the level of the loss).

Abstract: A valve timing control device includes a drive pulley 2 driven by a crankshaft of an engine, and a driven camshaft 1. The camshaft 1 has a cam 70 that serves to open and close an intake port 72. An engine valve 71 is spring-loaded by a valve spring 73, whereas the cam 70 opens or closes the engine valve 71 against the bias of the spring 73. Torque is transmittable between the drive cam 2 and the camshaft 1, and a rotation angle adjusting mechanism 4 is provided therebetween. The rotation angle adjusting mechanism 4 has a movable operating member 11 being movable in a radial direction.

Abstract: A valve timing control system includes a driving plate, a lever provided to a camshaft, a radial slot formed in the driving plate, an intermediate rotator arranged rotatable with respect to the driving plate and the camshaft and having a spiral slot, and a link having a base end pivotally coupled to the lever and a front end arranged swingably and including a ball engaged with the spiral slot and a block member engaged with the radial slot. The ball has a center of engagement located on a swinging axis of the front end of the link, producing no moment.

Abstract: A drive rotation member is rotated about a given axis by a crankshaft of the engine, and a driven rotation member is rotated about the given axis together with a camshaft of the engine. A relative rotation angle control mechanism is arranged through which the drive and driven rotation members are coaxially connected. The relative rotation angle control mechanism has a movable control member which, when applied with an operation force from an actuation device, varies a relative rotation angle between the drive and driven rotation members.

Abstract: A relative rotation angle control mechanism of a valve timing control device comprises a radial guide provided by one of drive and driven rotation members which are rotatable about a given axis. A movable control member is guided by the radial guide in a manner to move in a radial direction with respect to the given axis. A link links the movable control member to a given portion of the other of the drive and driven members. The given portion is positioned away from the given axis in a radial direction. An intermediate rotation member is rotatable about the given axis relative to both the drive and driven rotation members. A spiral guide is provided by the intermediate rotation member to guide the movement of the movable control member, so that rotation of the intermediate rotation member relative to the radial guide induces a radial movement of the movable control member.

Abstract: There is disclosed a program development system, a method for developing programs and a storage medium storing programs for development of programs by which the reduction in development periods of a program to be incorporated into a real time control system and the improvement of qualities are realized. A program development system comprises a state transition storing section to store a state transition matrix, a processing time storing section to store processing time required for an action described in each cell in the state transition matrix, and a simulator to obtain processing time required for a simulation of operations of a system by accumulating events inputted sequentially and time information corresponding to a cell specified sequentially by a state inputted as an initial state or a state subsequent to transition described in each cell.

Abstract: A drive rotation member is rotated about a given axis by a crankshaft of the engine, and a driven rotation member is rotated about the given axis together with a camshaft of the engine. A relative rotation angle control mechanism is arranged through which the drive and driven rotation members are coaxially connected. The relative rotation angle control mechanism has a movable control member which, when applied with an operation force from an actuation device, varies a relative rotation angle between the drive and driven rotation members.

Abstract: A variable valve timing control apparatus for an internal combustion engine that varies the rotational phrase of the first shaft with respect to the second shaft. The apparatus comprises a housing member rotated in synchronism with one of the first shaft and the second shaft, the housing member having a circular space provided in the housing member and radially extending at least one fan-shaped space from outer circumferential surface of the circular space, a vane rotor rotated in synchronism with the other of the first shaft and the second shaft and accommodated in the housing member in order to relatively rotate with respect to the housing member, the vane rotor having radially extending at least one vane so as to divide the fan-shaped space into first chamber and second chamber.

Abstract: In NiMnZn based ferrite, main components range within the scopes of Fe2O3=53 to 59 mol %, MnO=22 to 41 mol %, ZnO=4 to 12 mol %, and NiO=2 to 7 mol %, and sub-components of said NiMnZn based ferrite range within the scopes of SiO2: 0.005 to 0.03 wt %, CaO: 0.008 to 0.17 wt % and P: 0.0004 to 0.01 wt %.

Abstract: To provide a large-scale integrated-circuit apparatus having a CPU and a plurality of circuit blocks to be operated in accordance with clock signals, which includes the circuit blocks for receiving reset signals to perform initialization and outputting reset completion signals and a CPU for logic-operating the initialization completion signals output from the circuit blocks and outputting a signal for canceling resetting to the circuit blocks in accordance with the logic-operation result.

Abstract: A variable valve timing control apparatus for an internal combustion engine that varies the rotational phrase of the first shaft with respect to the second shaft. The apparatus comprises a housing member rotated in synchronism with one of the first shaft and the second shaft, the housing member having a circular space provided in the housing member and radially extending at least one fan-shaped space from outer circumferential surface of the circular space, a vane rotor rotated in synchronism with the other of the first shaft and the second shaft and accommodated in the housing member in order to relatively rotate with respect to the housing member, the vane rotor having radially extending at least one vane so as to divide the fan-shaped space into first chamber and second chamber.

Abstract: A rotor member having vanes is rotatable in a housing in the forward and reverse directions by supplying and draining hydraulic pressure selectively to an advance side hydraulic chamber and a retard side hydraulic chamber, to change the relative rotational phase between a timing sprocket and a cam shaft and thereby to vary the opening and closing timings of an intake or exhaust valve. The rotor member has a bulge portion located at the side of one vane, and formed with an axially extending pin sliding hole for receiving a lock pin to prevent and allow relative rotation between the housing and rotor member by moving in and out of an engaging recess of the housing.

Abstract: A disc changer is provided to support each of a plurality of bare discs for recording and/or regeneration on a separate disc rack board without requiring a cartridge. The disc rack boards are positioned so as to form a vertical stack. A carrier is provided which moves only in the vertical direction along the vertical stack of disc rack boards. Furthermore, a plurality of disc drives is provided in a vertical stack opposing the vertical stack of disc rack boards. A hand is provided which moves only in a direction perpendicular to the direction in which the carrier moves, and operates to transfer one of the plurality of bare discs between one of the plurality of disc rack boards and the carrier and between one of the plurality of disc drives and the carrier. Thus, the number of discs which may be loaded is increased while the size of the disc changer is minimized.

Abstract: The Mn—Zn system ferrite according to the present invention contains main components comprising manganese oxide, zinc oxide and iron oxide, and subordinate components comprising bismuth oxide and molybdenum oxide. It comprises 22.0 to 25.0 mol % c of manganese oxide calculated as MnO, 22.0 to 25.0 mol% of zinc oxide calculated as ZnO and the remainder calculated as Fe2O3 in main components. It has been sintered after adding thereto 50 to 400 ppm of a bismuth oxide component calculated as Bi2O3 and 50 to 400 ppm of a molybdenum oxide component calculated as MoO3 as subordinate component source materials. An initial magnetic permeability at 10 KHz is 8,500 or more at −20 to 20° C. and 10,000 or more at 20 to 100° C., and the temperature characteristics of magnetic permeability is excellent.

Abstract: An electrolyte solution for a lithium secondary battery comprises a nonaqueous solvent and a fluorine-containing electrolyte capable of dissociating into lithium ions, wherein the content of HF in the electrolyte solution is less than 30 ppm.

Abstract: A wire twist-preventing device in a winding machine of the invention comprises a flyer for forming a coil by winding a plurality of wires, which are arranged parallel with one another in a tape shape, around a winding frame having a plurality of winding stages which gradually increase upward in winding diameter, when the winding frame is lowered stage by stage, a dummy flyer which is rotated together with the flyer; and a dummy drum rotatably provided coaxially with the winding frame and having a circumferential length which is substantially equal to an average circumferential length of the winding frame, wherein the wires are wound around the winding frame by the flyer while they are wound around the dummy drum by the dummy flyer.

Abstract: A disc changer is provided to support each of a plurality of bare discs for recording and/or regeneration on a separate disc rack board without requiring a cartridge. The disc rack boards are positioned so as to form a vertical stack. A carrier is provided which moves only in the vertical direction along the vertical stack of disc rack boards. Furthermore, a plurality of disc drives is provided in a vertical stack opposing the vertical stack of disc rack boards. A hand is provided which moves only in a direction perpendicular to the direction in which the carrier moves, and operates to transfer one of the plurality of bare discs between one of the plurality of disc rack boards and the carrier and between one of the plurality of disc drives and the carrier. Thus, the number of discs which may be loaded is increased while the size of the disc changer is minimized.

Abstract: A method of fastening an intake manifold to cylinder heads of an internal combustion engine having two cylinder banks in order to reduce the deformations of cylinder bores in the cylinder heads. The method includes steps of (1) temporarily fastening the cylinder heads to the cylinder block using cylinder head bolts with a fastening torque of 1.0 kgfm (9.8 Nm), (2) temporarily fastening the intake manifold to the cylinder heads using intake-manifold bolts with a fastening torque of 1.6.+-.0.1 kgfm (15.7.+-.0.98 Nm), (3) loosening the fastening torque of the int-manif. bolts up to 0 kgfm (0 Nm; see h of FIG. 3), (4) fixing the cylinder heads to the cylinder block using the cylinder head bolts with a fastening torque of e.g. 3.0 kgfm+60.degree. (29.4 Nm+60.degree.) and (5) fixing the intake manifold to the cylinder heads using the intake-manifold bolts with a fastening torque of 0.9.+-.0.1 kgfm (8.8.+-.0.98 Nm).

Abstract: In a method for quenching metal parts, a quenching chamber is provided in which the quenching oil is continuously supplied from below the steel parts and circulated upward through the parts in a laminar flow. The circulation is accomplished by feeding the quenching oil onto the bottom of the quenching chamber of an auxiliary chamber surrounding it.

Abstract: The disclosed system comprises a plurality of controlling and calculating devices, each controlling and calculating device has a single common bus that is common to all the controlling and calculating devices and two individual buses, and the respective controlling and calculating devices are connected in series by the respective individual buses, whereby each individual bus is commonly shared by respective two of the plurality of controlling and calculating devices and therefore, input and output circuits to an object system are connected to the individual buses thereby performing the control.