Abstract: A pressure control valve includes a downstream pressure control valve disposed between a fuel pipe and a fuel rail. An opening-closing valve can be integrally formed with the downstream pressure control valve. A relief valve can be disposed to bypass the downstream pressure control valve. The downstream pressure control valve opens or closes the fuel passage leading to the fuel rail so that fuel pressure in the fuel rail is maintained at a predetermined value. When the engine is stopped, the fuel passage is closed to decrease leakage of fuel from the fuel injector. When the fuel pump is again operated, the by-pass relief valve is opened by the pressure of fuel in the fuel pipe. Thus, fuel is supplied from an upstream side to a downstream side and fuel pressure in the fuel rail is increased rapidly for engine re-start.

Abstract: An inverter control system for operating an induction motor calculates the primary magnetic flux vector and instantaneous torque value from the primary terminal voltage and primary current of the motor and produces a voltage vector to be delivered to the PWM inverter depending on the deviations of primary flux vector and instantaneous torque value from their command values and the phase angle of primary flux vector, with the switching of voltage vector being controlled so that the PWM inverter operates in a prescribed range of switching frequency irrespective of the period of calculation of the primary flux vector and instantaneous torque value. Setting the upper limit of switching frequency reduces the heat generation of the PWM inverter, allowing it to suffice with a smaller cooling device, and setting the lower limit of switching frequency reduces the magnetic noise and torque fluctuation of the motor.

Abstract: The present invention involves a vertical type semiconductor device whereby miniaturization and lowered ON resistance of a cell within the device can be achieved without impairing the functioning of the device. The line width of the gate electrode is made smaller to meeting the demand for miniaturization of the cell while the distance between the channel regions which are diffused into the portions below the gate during double diffusion remains virtually equal to that in the device of larger cell size having a low J.sub.FET resistance component. While the width of the gate electrode is set to be smaller, the mask members used during double diffusion are attached to the side walls of the gate electrode, where their width allows the source region to diffuse to the portion under the gate. Accordingly, miniaturization and lowered ON resistance of the cell can be achieved without impairing the functioning of the device.

Abstract: In a rotor of an AC generator for a vehicle, a coil bobbin, around which rotor coil is wound, includes a bobbin body having a first through hole at a winding drum portion and is made of hard resin. A first hole member is kept at the first through hole and is made of good thermal conductivity rubber. An outer peripheral layer is formed integrally with the first hole member and is made of good thermal conductivity rubber covering the outer peripheral surface of the winding drum portion. An improved rotor of an AC generator for a vehicle is provided, in which a regular winding property of the rotor coil is improved and at the same time, heat of the rotor coil can be more effectively radiated to the rotor core side so that generator output can be improved.

Abstract: A detector for a portable telephone or the like samples RF transmit power, detects the sampled signal using a Schottky diode and uses a logarithmic amplifier to apply a compressive function to the post-detection signal. The compressive function emphasizes power level changes at the low end of the transmission spectrum and de-emphasizes power level changes at the high end of the transmission spectrum. In this way, the range of detected powers required to be processed by subsequent circuitry is reduced, thereby simplifying the design of the circuit. To improve stability of the detector with respect to temperature fluctuations, the semiconductor element in the amplifier which provides its logarithmic characteristics is temperature-compensated, as is the detector diode.

Abstract: A material and method for bonding a semiconductor device to a pedestal, which can obtain a sufficient bonding strength and stable electric contact, are disclosed. On an n-type electrode constituting an ohmic electrode for a semiconductor laser device are formed a Ni layer and an Au-Sn solder layer. Then, the solder layer is melted and bonded to a heat sink provided with Au-plating. The film thickness of the Ni layer is set to approximately 500 .ANG. or more. When the solder layer is melted, Ni in the Ni layer diffuses into the solder layer and Sn in the solder layer diffuses into the Ni layer. By this mutual diffusion, bonding strength and wettability between the semiconductor device and pedestal can be improved. In addition, by setting the composition ratio of Ni layer to the Au-Sn solder layer to 1.3 wt % or more and under 10 wt %, bonding can be performed at a lower melting point and concurrently a higher bonding strength can be obtained.

Abstract: A scroll type compressor comprises a housing and a fixed scroll. A movable scroll is incorporated therebetween, eccentrically engaging with the fixed scroll, and has a rotating center and a revolving center. Pin members are arranged on the end plate of the movable scroll and on the housing. At least one of the pin members of the movable scroll is positioned on a first line and disposed downstream of the corresponding pin member of the housing in the rotating direction, when the volume ratio of a compression chamber is from 10 to 22 percent of the volume of the compression chamber at the time of the conclusion of the suction of medium. The first line passes through the rotating center and is perpendicular to a second line, which passes through the rotating and revolving centers. The compressor also has annular ring members, which contact at least a pair of the pin members of the movable scroll and the housing, to prevent the movable scroll from rotating.

Abstract: To enable bonding flat and corrugated sheets at their contact points by laser welding or other welding methods while laminating and spirally winding the sheets, a process of producing a metal catalyst carrier for exhaust gas purification in the form of a metal honeycomb column composed of flat and corrugated metal sheets alternately laminated, wound together, and bonded to each other, the process includes the steps of: forming plural openings in a flat sheet of a metal; laminating one piece of the flat sheet having the openings formed therein and one piece of a corrugated sheet of a metal and bonding the laminated flat and corrugated sheets to each other to form a composite sheet; and spirally winding the composite sheet around an axis to form columnar turns each composed of an outer flat layer composed of the flat sheet and an inner corrugated layer composed of the corrugated sheet, while bonding an outer turn and an adjoining inner turn by welding an inner corrugated layer of the outer turn, in a portion ex

Abstract: The present invention prevents the degradation of the power generating efficiency of an alternating current generator by preventing the expansion of an air gap formed between pole cores and a stator core, achieves low-noise operation by preventing generation of high-frequency impact magnetic noise, and makes it possible to relieve strains applied on a magnet holder. The present invention utilizes sixteen magnets, each of which fits between two of sixteen claw-like magnetic poles formed on the outer periphery of Lundell-type pole cores, which rotates integrally with a shaft. The magnets are caught and stopped by a magnet holder which has been formed by interconnecting zig-zagging segments and has elasticity as a whole. Here, the permanent magnets are held by the magnet holder so that the magnet holder does not protrude towards the rotor side from the outer peripheral face of the Lundell-type pole cores and the contacting faces of the magnet holder contact the outer faces of the permanent magnets.

Abstract: A magnetic clutch includes a rotor and an armature facing to each other for establishing a coupling connection. A serpentine magnetic circuit is formed in the rotor and the armature. A method for manufacturing a rotor of a magnetic clutch of the invention comprises the step of deforming a single ring-shaped plate of a magnetic material, by a plastic deformation process such as cold forging, into a ring-shaped element comprising generally concentric inner and outer cylindrical walls, and a ring-shaped bottom wall. Prior to or after or simultaneously with this step, ring grooves are formed on the bottom wall. A nonmagnetic material is then filled in the ring grooves, and the bottom surface of the bottom wall is cut to form a friction surface. By this cutting, the nonmagnetic material is exposed at the friction surface.

Abstract: A filter corrugated in wave shape along a first axis has an end filter material piece positioning at an end of the first axis and adjacent filter material piece positioning adjoining to said end filter material piece. The end filter material piece and said adjacent end filter material piece are adhered to each other by an adhesive. In another embodiment, a filter element has a cushion material disposed between the end filter material piece and the adjacent end filter material piece. A filter material has convex and concave crease portions alternately disposed along a first axis thereof and extending along a second axis thereof. The convex and concave crease portions define alternating convex and concave spaces therein. An elastic material fills at least a portion of at least one of said concave and convex spaces.

Abstract: A communication apparatus is used in a communication system, having a communication line, where an operation timing in each of the communication apparatus is coupled to the communication line and synchronized with the received signals in each of the communication apparatus. This communication apparatus comprises a signal-chip microprocessor having a central processing unit for executing main and interruption processing, a register storing data to be transmitted next, an output buffer for transmitting the transmission data, and an edge detector for detecting an edge in the communication line. The output buffer is directly responsive to an edge detection circuit, so that the transmission data can be immediately transmitted in response to the detection of an edge without a variable delay time caused by the operation condition which may be varied by the interruption processing or like.

Abstract: A thin-film electroluminescent device includes dielectric layers having improved dielectric characteristics. The device is fabricated by forming a first transparent electrode layer of ITO, a first dielectric layer, a luminescent layer, a second dielectric layer, and a second transparent electrode layer of ITO in this order on an insulating substrate. Each of the two dielectric layers is a film constituted by TaSnON. That is, the film includes tantalum, tin, oxygen, and nitrogen.

Abstract: First and second communicating holes are formed in a first formed plate 11, and first and second communicating holes are also formed in a second formed plate 12. The first and second formed plates 11 and 12 are joined to each other to form a joined body 8. When a plurality of joined bodies 8 are stacked, a heat exchanging section 7 is formed that is provided with a plurality of flow pipes 34 in which the first communicating holes are connected with each other in the stacking direction and the second communicating holes are also connected with each other. In the plurality of flow pipes 34 of the heat exchanging section 7, oil passage 35 in which engine oil flows in the stacking direction is formed, and further around the plurality of flow pipes 34, a plurality of cooling water passages 36 in which engine cooling water flows are formed.

Abstract: An active material for a positive electrode of a secondary cell comprises particles of a metal oxide and a conductive layer formed on the surfaces of individual particles of the metal oxide and made of a carbon powder which has a specific surface area of at least 150 m.sup.2 /g when measured prior to the formation of the conductive layer. The conductive layer covers at least 15% of an apparent surface of the individual particles of the metal oxide and has a thickness ranging from 0.01 .mu.m to 0.3 .mu.m. The active material has a specific surface area of 3.5 m.sup.2 /g to 100 m.sup.2 /g. A method for making the active material is also described along with a positive electrode comprising the active material and a non-aqueous electrolytic secondary cell comprising the positive electrode.

Abstract: An improved on-chip type filter for filtrating electromagnetic noise is disclosed. Within a sensor chip are provided processing and amplifying circuits, a ground pad, a power pad and an output pad. Also, within the sensor chip are disposed low pass filters between the power pad, the outpad and the circuits to filtrate electromagnetic noise. The lengths of aluminum wires connecting the power pad, the output pad and the low pass filters are shorter than the lengths of aluminum wires connecting the ground pad and the low pass filters. The aluminum wires connecting the power pad or the output pad and the low pass filters are uncrossed wires, which do not cross any other wires.

Abstract: An object inspection apparatus for clearly indicating the inspecting positions of an object under inspection so that inspection work thereon is performed efficiently has its inspection terminal set up on an inspection line. An image of the part to be inspected and a plurality of inspection items associated therewith are displayed on a screen of the terminal. The worker in charge of inspection performs inspection by following what is thus displayed. A touch panel arrangement on the screen, a separately provided keyboard and/or other appropriate device is used to input the results of the inspection.

Abstract: When a framing error occurs in a slave unit, the cause of error is analyzed, and an interruption is inhibited or enabled depending on the cause of error thus, optimal data communication can be performed. When an interrupt request is issued, whether or not the interruption is caused by a framing error is determined. If the interruption is affirmatively caused by a framing error, whether or not framing errors occur two or more times is determined. An interruption is not inhibited (i.e., enabled) for a negative determination.

Abstract: An apparatus has a detector for, when the operation of a vehicle is started, determining whether a specific portable wireless tolling storage medium is loaded in an automatic toll processing unit installed in the vehicle. A warning unit produces a visual or auditory warning if the detector determines that the specific tolling storage medium is not loaded. The apparatus enables realization of a tolling system that prevents incidents where a user neglects to load a tolling storage medium into a toll processing unit, thus ensuring normal toll processing.

Abstract: A high-output semiconductor laser element has one of a Cr/Pt/Au electrode and Cr/Ni/Au electrode as a P-type electrode to provide an electrode construction that is robust with respect to heat, high in reliability and stable for a long period of time. The P-type electrode is disposed on an N-type substrate via an epitaxial layer and defines a stripe 41 having a width of 100 .mu.m or more.