Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An engine starting method for starting an engine by causing first fuel injection when a crankshaft is reversely rotated by a predetermined angle at the start, and then rotating the crankshaft forward to perform first ignition, the method comprising the steps of immediately stopping driving of a starter motor when a starter switch is turned off before the first fuel injection at the start; and continuously driving the starter motor forward until a cylinder into which an air/fuel mixture is supplied by the first fuel injection performs at least one exhaust stroke and then stopping the driving of the starter motor when the starter switch is turned off after the first fuel injection at the start.

Abstract: 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.

Abstract: A starter generator which includes 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An engine control device that controls an engine having a brushless motor as a starter motor, wherein the control device comprises a pickup coil that outputs a pulse signal at a crank angle position set in a crank angle section where a load applied to the brushless motor in cranking the engine is light, said brushless motor including a stator, a rotor and a position detecting device that detects rotational angle positions of the rotor to output position detection signals which represent level changes at fixed crank angle positions of the engine, and the control device being constructed so as to identify a crank angle position corresponding to each position where the level of the position detection signal is changed, based on the output signal of the pickup coil and to obtain crank angle information from the level changes of the position detection signals to control ignition timing or the like.

Abstract: 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.

Abstract: 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.

Abstract: An engine control device that controls, using a microprocessor, a fuel injection device including an injector and a fuel pump, and a starter motor that starts an engine, including: first fuel pump driving means for driving the fuel pump only during set time at power-on of the microprocessor; and first fuel injection control means for causing the injector to perform first fuel injection before driving of the starter motor when it is confirmed that the driving of the fuel pump by the first fuel pump driving means is completed and that a start command for commanding the start of the engine is given.

Abstract: A control apparatus for an internal combustion engine-driven vehicle equipped with a power supply unit having an AC generator driven by an internal combustion engine, and a power converter which converts an output voltage from the AC generator into an AC voltage of a certain frequency, which comprises a leakage detection means which detects an occurrence of electric leakage in the power supply unit, a leakage occurrence position identification means which identifies a leakage occurrence position, and an electric shock preventing control means which performs control for preventing electric shock on at least one of the internal combustion engine and the power converter, while allowing a rotational speed of the internal combustion engine to increase to a speed at which travel of the vehicle is enabled, when the occurrence of electric leakage is detected.

Abstract: An engine starting method for starting an engine by causing first fuel injection when a crankshaft is reversely rotated by a predetermined angle at the start, and then rotating the crankshaft forward to perform first ignition, the method comprising the steps of immediately stopping driving of a starter motor when a starter switch is turned off before the first fuel injection at the start; and continuously driving the starter motor forward until a cylinder into which an air/fuel mixture is supplied by the first fuel injection performs at least one exhaust stroke and then stopping the driving of the starter motor when the starter switch is turned off after the first fuel injection at the start.

Abstract: An engine control device that controls an engine having a brushless motor as a starter motor, wherein the control device comprises a pickup coil that outputs a pulse signal at a crank angle position set in a crank angle section where a load applied to the brushless motor in cranking the engine is light, said brushless motor including a stator, a rotor and a position detecting device that detects rotational angle positions of the rotor to output position detection signals which represent level changes at fixed crank angle positions of the engine, and the control device being constructed so as to identify a crank angle position corresponding to each position where the level of the position detection signal is changed, based on the output signal of the pickup coil and to obtain crank angle information from the level changes of the position detection signals to control ignition timing or the like.