Kokusan Denki Co., Ltd. Patent applications |
Patent application number | Title | Published |
20140318488 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - Provided is a control device for an internal combustion engine, employing a microprocessor to control a load other than an ignition device, the control device being provided to an internal combustion engine in which is installed a magnet generator that has a magneto coil for successively generating, in association with revolution of the internal combustion engine, a first half wave voltage, a second half wave voltage of different polarity than the first half wave voltage, and a third half wave voltage of identical polarity to the first half wave voltage; and the magnet generator employing the second half wave voltage to drive the ignition device. The device is provided with an electricity storage element which draws excess power from the output that is output by the magnet generator for the purpose of driving the ignition device, and which is charged by the first and second half wave voltages, as well as being charged by the second half wave voltage as well at times that the internal combustion engine is in the exhaust stroke, in order to supply power to the load and to the microprocessor. The power source circuit is constituted to use the energy stored in this electricity storage element to generate power source voltage for presentation to the microprocessor and to the load other than an ignition device. | 10-30-2014 |
20140142808 | POWER SUPPLY UNIT CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE DRIVEN VEHICLE AND INTERNAL COMBUSTION ENGINE DRIVEN VEHICLE EQUIPPED WITH POWER SUPPLY UNIT CONTROL DEVICE - There are provided a power supply unit control device for an internal combustion engine driven vehicle provided with a lamp driving switch for turning lamp-driving current supplied to a vehicle headlamp from a battery charged by the output of an AC generator driven by an internal combustion engine and with a conducting control unit for controlling the lamp driving switch. The conducting control unit normally performs on/off control of the lamp driving switch at a normal duty ratio, the normal duty ratio being an on/off duty ratio for the lamp driving switch at which lamp-driving current can be kept at a value not impeding the charging of the battery, and, when the internal combustion engine decelerates, performs engine deceleration lamp conducting control, in which on/off control of the lamp driving switch at the normal duty ratio is interrupted and the lamp driving switch is controlled so that lamp-driving current necessary to suppress reductions in the brightness of the headlamp is sent to the headlamp, only for a limited length of time. | 05-22-2014 |
20130234446 | CONTROL DEVICE FOR ROTARY ELECTRICAL MACHINE - A control device for controlling a rotary electrical machine functioning as a motor and as a power generator, the device being provided with a power conversion circuit serving to function as an inverter for supplying a drive current from a battery to the rotary electrical machine and as a rectifier for rectifying the power generation output of the rotary electrical machine and supplying the output to the battery; and being provided with a controller for controlling the conversion circuit so that three-phase armature coils of the rotary electrical machine are short-circuited when the battery is disconnected from the conversion circuit and the DC output voltage of the conversion circuit becomes excessive, after which, when the DC output voltage of the conversion circuit decreases to a set low voltage, the short circuit of one phase of the armature coil is released and only two phases are short-circuited. | 09-12-2013 |
20130054070 | ELECTRIC WORKING VEHICLE - An electric working vehicle, including a motor, to supply a driving force to at least one wheel of plural wheels; a rotary-type blade attached on part of the vehicle body; a blade motor; a battery to supply electric power to the running and blade motor; a first power converter to convert the electric power from the battery for the running motor; a second power converter to convert the electric power from the battery for the blade motor; and a controller portion to control at least power conversion operations of the first and second converter, wherein as least, the first power converter is able to operate regeneration, and the controller portion controls the second power converter in such a manner that regeneration electric power when the first power converter operates under condition of the regeneration is supplied to the blade motor, depending on a charging condition of the battery. | 02-28-2013 |
20130051097 | POWER SOURCE DEVICE - A power source device for rectifying the output of an AC generator in which magneto coils are in a star-shaped connection in three phases. The device includes a control rectifier circuit configured from a first control rectifier circuit for performing full-wave rectification on three-phase AC voltages, and a second control rectifier circuit for performing full-wave rectification on AC voltages obtained between neutral and each of two-phase AC output terminals selected from the three-phase AC output terminals of the generator, as well as on AC voltage obtained between the selected two-phase AC output terminals; and a controller controlling the first and second circuits so that the output of the first circuit is supplied to the load when the rotational speed of the generator is equal/less than a set speed, and the output of the second circuit is supplied to the load when the rotational speed exceeds the set speed. | 02-28-2013 |
20110241472 | Rotating Electrical Machine and Method for Manufacturing a Stator Thereof - A group of coils used in a stator of a rotating electrical machine, wound continuously upon a divided core with a crossover wire, in which 2N coils (where N is a natural number) are arranged at approximately regular intervals, wherein a winding direction of N coils, which are first through Nth continuously wound coils, of a front half of the 2N coils, and a winding direction of rear half coils which are (N+1)-st through (2N)-th continuously wound coils, are opposite. | 10-06-2011 |
20110040434 | MOTORCYCLE - A motorcycle that transmits a rotation of an engine to a driving wheel via a power transmission device having a main clutch comprises a sub-clutch inserted between the power transmission device and an output shaft of the engine and a motor generator having a rotating shaft coupled to the power transmission device and is comprised so that the rotating shaft of the motor generator is coupled to the engine via the sub-clutch and to the driving wheel via the main clutch, and the motorcycle can be moved backward by turning off the sub-clutch and transmitting a rotation of the motor generator to the driving wheel via the main clutch. | 02-17-2011 |
20100095932 | IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE - An ignition device for an internal combustion engine including: an exciter coil that generates an AC voltage having a positive half wave and first and second negative half waves generated before and after the positive half wave with rotation of the internal combustion engine; and an ignition control portion that controls an ignition position of the engine using a microprocessor to which a power supply voltage is supplied from a power supply circuit that converts the voltage having the negative half waves generated by the exciter coil to a DC voltage, wherein the ignition control portion is comprised so as to cause a timer to start a counting operation at the start of the operation of the microprocessor, regard a measurement value of the timer as time between generation of the first negative half wave and generation of the second negative half wave to arithmetically operate counting data for measuring the ignition position based on rotational speed information of the engine obtained from the time, and immediately measure the arithmetically operated counting data to generate an ignition signal. | 04-22-2010 |
20100026246 | BATTERY CHARGING APPARATUS - A battery charging apparatus includes a controlled rectifier circuit for rectifying an output of a magneto AC generator and supplying a rectified output to a battery. The controlled rectifier circuit includes thyristors as rectifying elements, and components of the controlled rectifier circuit are mounted on a circuit board. The charging apparatus includes a protection circuit which has a sensor detecting a temperature of the circuit board and inhibits a trigger signal from being supplied to thyristors of said rectifier circuit when a temperature detected by said sensor is equal to or higher than a predetermined value. | 02-04-2010 |
20090322149 | ONBOARD ELECTRIC POWER CONTROL DEVICE - An onboard electric power control device which comprises a power unit, a control unit and a power source unit, in which: an opening portion of a case containing components of the power unit and an opening portion of a case containing components of the control unit are abutted so as to be coupled; a case of the power supply unit is fitted to an opening portion being provided on a side surface of the case of the power unit so that the both cases are coupled; the power unit and the control unit is connected by a flexible connecting conductor; and the connecting conductor is folded and is contained between a resin molded portion formed inside of the case of the power unit and a resin molded portion formed inside of the case of the control unit. | 12-31-2009 |
20090284087 | STARTER GENERATOR - A starter generator which comprises a rotor having a cuplike-shaped rotor yoke and magnets attached to an inner periphery of the rotor yoke, a stator mounted on a stator bracket and a protecting cover covering said rotor and stator, in which a hermetically sealed casing is constituted by said protecting cover and stator bracket, wherein a plurality of fans are provided on an outer surface of a bottom wall portion of said rotor yoke, a plurality of vent holes are provided through said bottom wall portion, said plurality of fans constitute a centrifugal fan which draws out air inside the rotor yoke through said vent holes and sends the air to an outer periphery of the rotor yoke, and a guide surface which guides the air sent to the outer periphery of the rotor yoke to a space inside the rotor yoke is provided on the stator bracket. | 11-19-2009 |
20090272354 | CAPACITOR DISCHARGE IGNITION DEVICE FOR ENGINE - A capacitor discharge ignition device for an engine including: an exciter coil provided in a magneto generator driven by the engine; a voltage increasing circuit that increases an induced voltage of the exciter coil; a capacitor charged by an output voltage of the voltage increasing circuit; and a discharge switch that is turned on at ignition timing of the engine and discharges charges in the capacitor through a primary coil of the ignition coil, wherein the ignition device further includes a voltage increasing control portion that controls the voltage increasing circuit so as to increase an output voltage of the voltage increasing circuit when a rotational speed of the engine is a set value or less, and limit the output voltage of the voltage increasing circuit when the rotational speed of the engine exceeds the set value. | 11-05-2009 |
20090126686 | CAPACITOR DISCHARGE ENGINE IGNITION DEVICE - A capacitor discharge ignition device in which a coil unit including an ignition coil and an exciter coil wound around a common core, and an ignition unit including a circuit board and components of an ignition circuit mounted to the circuit board are housed in a case and molded with resin poured into the case, wherein the ignition coil and the exciter coil are placed axially with a spacing therebetween and a space is formed between the coils, the circuit board of the ignition unit is placed on a lateral side of the coil unit, and terminals for connecting the ignition coil and the exciter coil to the circuit board are all connected to the circuit board through the space between the ignition coil and the exciter coil. | 05-21-2009 |
20090102437 | POWER GENERATING APPARATUS - A power generating apparatus including an AC generator that supplies electric power to a load including a voltage accumulating means, an inverter that applies AC control voltage to armature winding of the generator from the voltage accumulating means, and a controller that controls a phase of control voltage applied to the armature winding by the inverter to keep load voltage at a target value, wherein the phase of the control voltage is controlled so as to advance when the load voltage is higher than the target value, hold the present phase when the load voltage is equal to the target value, advance when the load voltage is lower than the target value and a phase of phase voltage of the generator is delayed behind a phase of a phase current of the same phase, and delay when the load voltage is lower than the target value and the phase of the phase voltage of the generator is advanced ahead of a phase of a phase current of the same phase. | 04-23-2009 |
20090057006 | ELECTRONIC UNIT AND PRODUCTION METHOD OF THE SAME - A method of producing an electronic unit in which components are housed in a case and molded with resin, wherein an opening portion of the case housing the components of the unit is closed by a lid plate, the resin is poured into the case through the hole provided in the lid plate to fill the case with the resin while allowing air to be exhausted through a hole provided in a bottom wall portion of the case, with the lid plate of the case directed downward, then the resin in the case is discharged to the outside through the hole provided in the lid plate, and thus a resin mold layer that continuously covers entire surfaces of the components housed in the case and an inner surface of the case is formed with space in contact with the resin mold layer remaining in the case. | 03-05-2009 |
20090042459 | CONTROL DEVICE FOR MARINE ENGINE - A control device for a marine engine comprised so that a section of an angle sufficiently narrower than a crank angle corresponding to each stroke of a combustion cycle of the engine is set as an instantaneous speed detection section, a crank angle position that appears every time the engine rotates in the instantaneous speed detection section is detected as a specific crank angle position, an instantaneous rotational speed of the engine is detected every time each specific crank angle position is detected, it is determined whether the engine needs to be assisted from the degree of reduction in the instantaneous rotational speed, and a motor-generator including a rotor directly connected to a crankshaft of the engine is driven to apply a drive force from the motor-generator to the engine when it is determined that the engine needs to be assisted. | 02-12-2009 |
20090020092 | ENGINE STARTING DEVICE - An engine starting device including: a battery capacity monitoring portion that estimates a remaining capacity of a battery; a start time starter driving portion that supplies a driving current from the battery to a starter generator for causing cranking of the engine when a start mode of the engine is a normal start mode; and a display portion that displays that the cranking for starting the engine is to be performed by a manual starter when the estimated remaining capacity of the battery is insufficient, wherein the driving of the starter generator is prohibited and the start mode of the engine is switched to the manual start mode when the estimated remaining capacity of the battery is insufficient. | 01-22-2009 |
20080290477 | Semiconductor Device - A semiconductor device having a plurality of semiconductor chips mounted on a lead frame ( | 11-27-2008 |
20080272663 | MAGNETO ROTOR - A magneto rotor in which a plurality of magnets are secured on an inner periphery of a peripheral wall portion of a cup-like rotor yoke, and a magnet protecting cover is provided that integrally has a cylindrical portion that covers inner peripheries of the magnets, and an outer flange that is formed at one axial end of the cylindrical portion and covers end surfaces of the magnets, wherein an annular protrusion protruding toward the opening of the rotor yoke is formed on an area closer to an inner periphery of the outer flange of the magnet protecting cover, an annular adhesive storage portion is formed between the peripheral wall portion closer to the open end of the rotor yoke and the annular protrusion, a groove opening into the adhesive storage portion and continuing circumferentially of the rotor yoke is also formed in the peripheral wall portion closer to the open end of the rotor yoke, and the adhesive storage portion and the groove are filled with an adhesive to seal a boundary between the outer flange of the magnet protecting cover and the peripheral wall portion of the rotor yoke with the adhesive. | 11-06-2008 |
20080261466 | CONTROL DEVICE FOR POWER TRIM UNIT FOR OUTBOARD ENGINE - A control device for a power trim unit for an outboard engine includes: a circuit that supplies a driving current to a power trim motor of the outboard engine from a DC power supply through an overcurrent protection switch and an H bridge circuit comprised of semiconductor switches; a trim angle control portion that performs control to cause a trim angle to reach a target value by performing PWM control of the driving current supplied from the DC power supply through the H bridge circuit to the power trim motor according to a deviation between the target value of the trim angle of the outboard engine and a trim angle detected by a trim angle sensor; and an overcurrent protection portion that turns off the overcurrent protection switch when overcurrent flows through the H bridge circuit. | 10-23-2008 |
20080254690 | EMERGENCY ENGINE SHUTOFF APPARATUS AND ACCIDENT DETERMINING APPARATUS FOR SHIP - An emergency engine shutoff apparatus for shutting off an engine in an accident of a ship having a hull and an outboard engine system is provided which includes: an acceleration detector for detecting an acceleration applied in a longitudinal direction of the hull and an acceleration applied in a vertical direction of the hull; an accident determining apparatus for determining that a collision accident occurred when the acceleration applied in a longitudinal direction of the hull exceeds a threshold, and for determining that a capsize accident occurred when a roll angle of the ship exceeds a threshold, the roll angle being arithmetically operated by using the acceleration in the vertical direction; and an engine shutoff apparatus for shutting off the engine by stopping fuel supply to the engine when it is determined that a collision accident or a capsize accident occurred. | 10-16-2008 |