Abstract: A control device for a vehicle AC generator provided with a rectifier and a battery connected to the latter comprises a voltage regulator with a switching element connected to the field coil of the generator, to adjust the output voltage of the generator to a predetermined value in which a field current is controlled to eliminate a load torque which otherwise occurs immediately after the start of the engine, to stabilize the rotation of the engine, and to prevent the production of belt slip noises at low temperatures. Further, when the generator output is restored, the production of a belt slip noise is prevented, and the decrease in the speed of rotation of the engine is prevented.

Abstract: An electromagnetic solenoid for oil hydraulic control valves including an oil flow notch on a magnetic sleeve bearing; an axially extending oil flow notch on a nonmagnetic stopper washer; an oil flow gap between a movable iron core and an operating rod; and an axially extending oil flow notch on the operating rod so that oil can flow easily and freely by movement of a movable iron core and the operating rod. Since the profiles of the notches are simple and the operation rod is uniform in outer diameter, the solenoid can be formed easily and inexpensively, with additional advantages of improved magnetic property and response.

Abstract: A Hall-effect sensor, wherein a Hall element is disposed in a magnetic path being formed by a magnet and a flux guide, and the magnet, flux guide, and Hall element are integrally held with a molded frame, and the Hall element is fixed to the magnet (or flux guide) or the molded frame. This Hall-effect sensor can easily position the Hall element with higher sensitivity.

Abstract: An electronic control apparatus for a vehicle includes first and second controllers between which the transmission of information is performed. A processor in the form of a microcomputer processes information transmitted from the first controller to the second controller and controls an actuator such as a brake actuator based on the information thus processed. An abnormality detecting circuit detects an interruption of signal transmission between the first and second controllers for a predetermined period of time, and it stops the control of the second controller on the actuator when it detects such an interruption. A transmission inhibitor is provided for inhibiting signal transmission from the second controller to the first controller when the abnormality detector detects an interruption.

Abstract: An apparatus for controlling an engine idling rate comprises first correction means for correcting the engine idling rate according to the excitation period in each predetermined cranking period for driving a generator of the engine. A second correction means corrects the predetermined cranking period according to the engine idling rate, and suppresses variations of the engine idling rate.

Abstract: A knock sensing apparatus for a multi-cyclinder internal combustion engine has a knock sensor that generates an electrical output signal corresponding to vibrations of the engine. A peak hold circuit generates a level signal indicating the level of the output signal of the knock sensor during a prescribed period. The level signal is compared with a threshold determined by the operating region of the engine. When the level signal exceeds the threshold level, it is determined that the engine is knocking. According to one form of the present invention, the threshold is determined on the basis of the output signals from a plurality of sensors for sensing different operating conditions of the engine. In a preferred embodiment, the sensors include a sensor for sensing an indication of the engine rotational speed and an engine load sensor.

Abstract: A fuel supply system including an evaporated fuel gas purge system measuring a purge gas quantity in purging which comprises: evaporated fuel gas adsorption means having at least a suction port, an exhaust port, a purge port, a chamber in which an adsorption agent that adsorbs an evaporated fuel gas is filled, and detecting means for detecting a quantity of adsorption by the adsorption agent; purge means for purging an adsorbed gas; pressure detecting means for detecting a pressure at a purge gas exhaust part; and suction air temperature detecting means for detecting a temperature of suction air which flows in purging the adsorbed gas. By using the measured value of the purge gas quantity, a fuel injection quantity is corrected, which is determined by an air quantity for suction of the engine corresponding with the purge gas quantity.

Abstract: A proportional flow control valve in which a valve seat is provided in the proportional flow control valve body, a valve piece is slidably mounted on a movable iron core, and is urged toward the valve seat by an elastic member disposed between the valve piece and the movable iron core, and a holder is fixedly mounted on the movable iron core so as to limit the movement of the valve piece toward the valve seat caused by the elastic member. The proportional flow control valve is high in reliability in which the leakage of fluid is substantially zeroed even when fully closed, and the difficulties are eliminated that, when its flow rate adjusting means engages with or disengages from the valve seat, hammering sounds are produced and the flow characteristic is adversely affected, and which is simple in adjustment and is maintained correct in flow characteristic at all times.

Abstract: A rotor for a permanent magnet-type dynamoelectric machine comprises a rotor shaft and a rotor magnet assembly including a plurality of permanent magnet segments each having a chamferred axially-extending outer side edges defining, together with the chamferred outer side edge of the adjacent magnet segment, a plurality of axial recesses when the magnet segments are mounted around the rotary shaft. The machine rotor further comprises a nonmagnetic support tube member for contacting and supporting the outer circumferential surface of each of the permanent magnet segments of the rotor magnet assembly, the support tube member having a plurality of inwardly extending projections for contacting and supporting the chamferred side surfaces of the magnet segments. The nonmagnetic support tube member may comprise a pair of metallic cup-shaped member having a substantially tubular members disposed around the rotor magnet assembly and a radially extending end plate member attached to the rotary shaft.

Abstract: A variable speed electric hoist includes an invertor unit for frequency-controlling the speed of rotation of a lifting motor, a brake on/off section for turning off a brake according to a command produced from the invertor unit while the invertor unit is supplying a three-phase AC current to the lifting motor. The electric hoist also includes an emergency brake turn-on section for detecting a condition that a command produced from the invertor unit is not stopped after a lifting/lowering command is stopped to thereby turn on the brake upon detection of the condition.

Abstract: An engine control apparatus has an intake air quantity detector which detects an intake air quantity to an engine, a controller which controls the engine in response to the output of the intake air quantity detector a load detecting detector which detects a load to the engine, and a clip device the output of the intake air quantity detecting means at a second value when a first time has passed after the load of engine has reached a predetermined value or higher.

Abstract: An integrally molded Hall sensor device for detecting the crankshaft angle of an automotive engine. The injection mold includes a projection 1a extending into a cavity and having a width equal to that of a gap through which a magnetic shutter passes. Before the molding, the parts are assembled utilizing a skeletal frame having first and second opposing pairs of vertically extending guide members, and the inserted electrical conductor for the Hall IC is embedded in the frame. The Hall IC and associated parts are accommodated in a holder, which is thereafter fitted between the first pair of guide members, to be translatable toward the gap; a magnetic circuit member including a permanent magnet is fitted between the second pair of the guide members to be translatable toward the gap. The assembled parts are then put into the mold such that the surfaces flanking the gap are positioned at respective sides of the projection.

Abstract: In a supercharged pressure control valve apparatus of an internal combustion engine, a housing of supercharger has first and second by-pass air paths; a valve sheet formed on an end of the second by-pass air path; a rubber diaphragm having thick sealing part of convex and concave sectional shape at its outer periphery; a valve disc fixed to the moving part of the diaphragm and opening closing the first and the second by-pass air paths responding to movement of the diaphragm; and a casing of the valve directly fixed on the housing by sandwiching the outer periphery of the diaphragm.

Abstract: A magnetic particle type electromagnetic clutch has two clutch discs so disposed that the two discs can be electromagnetically connected together and disconnected. In a space between the two discs are charged magnetic particles. When an excitation current is run through the excitation coil disposed near the two discs to produce a magnetic flux, the two discs and magnetic particles are magnetized to be connected in unison, thereby transmitting a torque from the drive shaft to the driven shaft. The two discs are each secured to the tip end of the shafts. The shaft has two groups of magnetic layers which are rigidly affixed to the shaft and axially spaced. Each of the groups of magnetic layers is directed + 45 degrees or - 45 degrees with respect to the axis of the shaft. When the shafts start to rotate, magnetostriction is developed in the respective magnetic layers resulting in a change in permeability.

Abstract: In the suspension controller of the present invention, there is provided a suspension or stabilizer characteristic change-over determining device whereby a damping force or a spring constant of a suspension or a torsional force of a stabilizer is calculated from a degree of similarity corresponding to a physical amount which exerts influence on the suspension or stabilizer characteristics and a state amount, using fuzzy logic, and when it is enhanced, this enhanced state of the suspension or the stabilizer is maintained for a set time. If during this period a set value of the damping force or the spring constant or the torsional force corresponding to the output which is responsive to the degree of similarity indicates a rather low state for a predetermined time or longer, the value of the damping force or the spring constant or the torsional force is set low and this state is maintained for a set time.

Abstract: An apparatus and method for automatically removing, in an initial stage of a machining operation, a contact of a wire cut type electrode and a workpiece to be machined by an electric discharge generated between the electrode and the workpiece. With such an apparatus and method, even if there occurs a contact between the electrode and workpiece, the electric discharge machining operation can be started according to an NC machining program.

Abstract: A small size electric motor comprises a motor housing having a built-in stator and secured to a supporting member. The motor housing is made of a synthetic resin and has a substantially tubular heat conductive plate embedded in a portion thereof which is attached to the supporting member. The heat conductive plate is made of a metallic material, and its inner peripheral portion is projecting toward the inner side of the housing so that the heat conductive plate is brought into contact with the stator, and its outer peripheral portion is exposed to the surface to which the supporting member is attached so that the heat conductive plate is brought into contact with the supporting member. Therefore, the heat generated by the motor is radiated while transmitted from the stator to the supporting member through the heat conductive plate.

Abstract: A control valve device for controlling flow rate, comprises: valve holder (31) linearly moved forward and backward by a driving unit (2), said valve holder serving as a converting mechanism for converting a rotary motion of driving means into a linear motion; valve piece (32) being supported by the front end of the valve holder while movable back and forth direction, and fitted into a valve seat (1b) when the valve holder advances toward the valve seat; and a spring (37) interposed between the valve piece and the valve holder for urging valve piece toward the valve seat.

Abstract: A Hall effect type sensing device comprises a magnetic circuit, a Hall transducing element arranged in the magnetic circuit to output a signal depending on a change in magnetic flux, a magnetic flux changing member which is able to change the magnetic flux in the magnetic circuit, a gap part which allows the magnetic flux changing member to move therein, and a frame member having its one side provided with a recessed portion forming the gap portion, and having its other side provided with an accommodation portion at a position adjacent to the recessed portion, the accommodation portion housing the Hall transducing element and a member forming the magnetic circuit.

Abstract: In a method of forming an offset configuration for a cutting tool which is used to machine a workpiece under the control of a numerical control device, both in the case where a cutting tool having first and second edges on both sides which have nose Rs, respectively, are used in such a manner that the cutting tool is moved horizontally and vertically with respect to a workpiece rotating, and the first edge is used when a machine configuration increases in vertical coordinate, and the second edge is used when a machining configuration decreases in vertical coordinate, and in the case where a cutting tool having first and second edges on both sides which have nose Rs, respectively, and provide a predetermined inclination angle .theta. is used in such a manner that the tool is moved horizontally and vertically with respect to a workpiece rotating, and the first edge is used when the inclination angle, in a vertical direction, of a machining configuration is smaller than the inclination angle .theta.