Abstract: An electric device control method controls an electric device that includes an internal combustion engine, a first electric motor that receives a driving force of the internal combustion engine to carry out power generation, and a second electric motor connected to a drive shaft. The method sets a rotational speed of the internal combustion engine to increase as a vehicle speed of the vehicle increases while the power generation is carried out by the first electric motor. Where the driving force required by the second electric motor becomes zero or negative while the first electric motor is carrying out power generation by the driving force of the internal combustion engine, the internal combustion engine is stopped where the vehicle speed is greater than or equal to a first threshold value, and the power generation is continued where the vehicle speed is less than the first threshold value.

Abstract: An electric device control method controls an electric device that includes an internal combustion engine, a first electric motor that receives a driving force of the internal combustion engine to carry out power generation, and a second electric motor connected to a drive shaft. The method sets a rotational speed of the internal combustion engine to increase as a vehicle speed of the vehicle increases while the power generation is carried out by the first electric motor. Where the driving force required by the second electric motor becomes zero or negative while the first electric motor is carrying out power generation by the driving force of the internal combustion engine, the internal combustion engine is stopped where the vehicle speed is greater than or equal to a first threshold value, and the power generation is continued where the vehicle speed is less than the first threshold value.

Abstract: A hybrid-vehicle driving system includes an engine, a transmission, a first motor/generator provided between the engine and the transmission, and a battery that can charge and discharge the first motor/generator. When an estimated output voltage of the first motor/generator becomes higher than or equal to a predetermined voltage during a gear shift operation of the transmission, the battery is electrically disconnected from the driving system, and the voltage of a power line on the side of the first motor/generator is then decreased so as to charge the battery.

Abstract: A power accumulating unit of a power supply system includes a first switch section configured to achieve a first voltage output state in which an output voltage is substantially equal to a first motor driving voltage and a second switch section configured to achieve a second voltage output state in which the output voltage is substantially equal to a second motor driving voltage that is higher than the first motor driving voltage. A voltage switching control part is configured to perform a voltage switching control to switch between the first motor driving voltage and the second motor driving voltage by alternately operating the first and second switch sections to repeatedly switch between the first voltage output state and the second voltage output state.

Abstract: To protect the inverters and motor generators from damage caused by abnormal currents resulting from the sudden changes in voltage that occur when changing the battery voltage. A vehicle equipped with an engine 10* and first and second motor-generators 11 and 12 that can generate electricity by being driven by engine 10* or from regeneration of kinetic energy of the vehicle, power supply line 25 that connects first motor-generator 11 with second motor-generator 12, and battery 23 connected via switch 24 in the middle of electric power supply line 25. When changing the voltage of battery 23, switch 24 is opened before the voltage of battery 23 is changed, and switch 24 is closed only after one of the motor generators 11 and 12 is caused to generate electric power or propel the vehicle in order to reduce the difference in voltage between power supply line 25 and battery 23.

Abstract: A hybrid-vehicle driving system includes an engine, a transmission, a first motor/generator provided between the engine and the transmission, and a battery that can charge and discharge the first motor/generator. When an estimated output voltage of the first motor/generator becomes higher than or equal to a predetermined voltage during a gear shift operation of the transmission, the battery is electrically disconnected from the driving system, and the voltage of a power line on the side of the first motor/generator is then decreased so as to charge the battery.

Abstract: A power accumulating unit of a power supply system includes a first switch section configured to achieve a first voltage output state in which an output voltage is substantially equal to a first motor driving voltage and a second switch section configured to achieve a second voltage output state in which the output voltage is substantially equal to a second motor driving voltage that is higher than the first motor driving voltage. A voltage switching control part is configured to perform a voltage switching control to switch between the first motor driving voltage and the second motor driving voltage by alternately operating the first and second switch sections to repeatedly switch between the first voltage output state and the second voltage output state.

Abstract: A hybrid drive system has an engine (11); a motor-generator (16); a transmission (12) for converting drive force inputted from at least one of the engine (11) and the motor-generator (16) and transmitting the converted drive force to a drive wheel (15); a first rotating shaft (41), a second rotating shaft (42) and a third rotating shaft (43) disposed mutually in parallel.

Abstract: A hybrid electric vehicle runs by torque of an internal combustion engine (11, 111) and torque of an electric motor (13, 116) that are output through a transmission. The transmission comprises a first shaft (21, A113) that is connectable to the internal combustion engine (11, 111), a second rotation shaft (22, A114) that is connectable to the electric motor (13, 116), and a third rotation shaft (23, A112) that is connected to drive wheels (14, 115). A plurality of combinations of gears that are selectively applied are provided between the first rotation shaft (21, A113) and the third rotation shaft (23, A112), and between the second rotation shaft (22, A114) and the third rotation shaft (23, A112). A variety of power transmissions to the drive wheels (14, 115) are made possible by further providing a clutch (64, 151) that connects the first rotation shaft (21, A113) and the second rotation shaft (22, A114).

Abstract: To protect the inverters and motor generators from damage caused by abnormal currents resulting from the sudden changes in voltage that occur when changing the battery voltage. A vehicle equipped with an engine 10* and first and second motor-generators 11 and 12 that can generate electricity by being driven by engine 10* or from regeneration of kinetic energy of the vehicle, power supply line 25 that connects first motor-generator 11 with second motor-generator 12, and battery 23 connected via switch 24 in the middle of electric power supply line 25. When changing the voltage of battery 23, switch 24 is opened before the voltage of battery 23 is changed, and switch 24 is closed only after one of the motor generators 11 and 12 is caused to generate electric power or propel the vehicle in order to reduce the difference in voltage between power supply line 25 and battery 23.

Abstract: Power supply equipment for a motor vehicle, includes a motor generator, an inverter for driving the motor generator, a battery and a capacitor of an electrical double layer, wherein the capacitor is directly connected to a DC side of the inverter and the battery is connected in parallel with the capacitor via a first switching unit. When an engine is started up, the power stored in the capacitor is used, and the switching units are turned off to separate the battery from the start-up of the engine.

Abstract: A hybrid drive system has an engine (11); a motor-generator (16); a transmission (12) for converting drive force inputted from at least one of the engine (11) and the motor-generator (16) and transmitting the converted drive force to a drive wheel (15); a first rotating shaft (41), a second rotating shaft (42) and a third rotating shaft (43) disposed mutually in parallel.

Abstract: Power supply equipment for a motor vehicle, comprising a motor generator, an inverter for driving said motor generator, a battery and a capacitor of an electrical double layer, wherein the capacitor is directly connected to a DC side of the inverter and the battery is connected in parallel with the capacitor via a first switching unit. When an engine is started up, the power stored in the capacitor is used, and the switching units are turned off to separate the battery from the start-up of the engine.

Abstract: Power supply equipment for a motor vehicle, includes a motor generator, an inverter for driving the motor generator, a battery and a capacitor of an electrical double layer. The capacitor is directly connected to a DC side of the inverter and the battery is connected in parallel with the capacitor via a first switching unit. When an engine is started up, the power stored in the capacitor is used, and the switching units are turned off to separate the battery from the start-up of the engine.

Abstract: A hybrid electric vehicle runs by torque of an internal combustion engine (11, 111) and torque of an electric motor (13, 116) that are output through a transmission. The transmission comprises a first shaft (21, A113) that is connectable to the internal combustion engine (11, 111), a second rotation shaft (22, A114) that is connectable to the electric motor (13, 116), and a third rotation shaft (23, A112) that is connected to drive wheels (14, 115). A plurality of combinations of gears that are selectively applied are provided between the first rotation shaft (21, A113) and the third rotation shaft (23, A112), and between the second rotation shaft (22, A114) and the third rotation shaft (23, A112). A variety of power transmissions to the drive wheels (14, 115) are made possible by further providing a clutch (64, 151) that connects the first rotation shaft (21, A113) and the second rotation shaft (22, A114).

Abstract: A hybrid drive type vehicle having a permanent magnet type synchronous motor can provide high torque characteristics in low revolution speed range of the engine and high power generation characteristics at high revolution speed range of the engine. The hybrid drive type vehicle includes an electric rotary machine being formed with a stator and a rotor. A field magnet of the rotor include a first field magnet and a second field magnet. The first and second field magnets are opposing with a magnetic pole of the stator and having a mechanism for varying a phase of a magnetic pole resulting from combination of the first and second field magnets relative to the magnetic pole of the first field magnet depending upon direction of a torque of the rotor.

Abstract: A hybrid drive type vehicle having a permanent magnet type synchronous motor can provide high torque characteristics in low revolution speed range of the engine and high power generation characteristics at high revolution speed range of the engine. The hybrid drive type vehicle includes an electric rotary machine being formed with a stator and a rotor. A field magnet of the rotor include a first field magnet and a second field magnet. The first and second field magnets are opposing with a magnetic pole of the stator and having a mechanism for varying a phase of a magnetic pole resulting from combination of the first and second field magnets relative to the magnetic pole of the first field magnet depending upon direction of a torque of the rotor.

Abstract: Power supply equipment for a motor vehicle, includes a motor generator, an inverter for driving the motor generator, a battery and a capacitor of an electrical double layer. The capacitor is directly connected to a DC side of the inverter and the battery is connected in parallel with the capacitor via a first switching unit. When an engine is started up, the power stored in the capacitor is used, and the switching units are turned off to separate the battery from the start-up of the engine.

Abstract: The present invention provides a driving apparatus for a vehicle comprising an engine for providing a primary driving force to a driving shaft and an auxiliary power plant connected with the engine through a transmission the transmission comprising an input shaft for inputting the primary driving force from the engine and an output shaft connected to the input shaft for transmitting the primary driving force to the driving shaft wherein the auxiliary power plant provides a secondary driving force to the driving shaft during a shifting in speed.

Abstract: A fluid transfer apparatus utilizes a linear motor including a movable element in which magnetic poles are provided at a predetermined pitch along a moving direction, magnetic pole teeth provided in upper and lower portions of the movable element at a predetermined pitch along a moving direction of the movable element and so as to oppose to each other via the movable element, and a coil, wherein adjacent magnetic pole teeth and opposing magnetic pole teeth among the magnetic pole teeth form different poles.