Abstract: A vehicle includes a gear mechanism connected to a driving wheel; a traveling electric motor configured to exchange heat with a heat exchange medium shared by the gear mechanism and output motive power to the driving wheel via the gear mechanism; and a controller configured to change an operating point of the traveling electric motor to a stronger field side rather than a maximum efficiency point in a case that a temperature of the heat exchange medium is less than a predetermined temperature.

Abstract: A vehicle includes a gear mechanism connected to a driving wheel; a traveling electric motor configured to exchange heat with a heat exchange medium shared by the gear mechanism and output motive power to the driving wheel via the gear mechanism; and a controller configured to change an operating point of the traveling electric motor to a stronger field side rather than a maximum efficiency point in a case that a temperature of the heat exchange medium is less than a predetermined temperature.

Abstract: An electric vehicle control apparatus includes a first motor generator, a second motor generator, a booster, and a controller. The booster boosts an input voltage to the first motor generator and an output voltage from the second motor generator to expand an operable range of the first motor generator and an operable range of the second motor generator into a first expanded operable range and a second expanded operable range, respectively. The controller controls the first motor generator to drive a load with regenerative power supplied during braking of an electric vehicle and to control the first motor generator to be driven at a first inefficient operating point within the first expanded operable range and to control the second motor generator to be driven at a second inefficient operating point within the second expanded operable range in a case where the regenerative power is used.

Abstract: A vehicle includes an electric power storage, an electric power generator, a rotating electric machine, and circuitry. The rotating electric machine is driven with electric power stored in the electric power storage and/or generated by the electric power generator to move the vehicle. The circuitry is configured to calculate target driving force for rotating electric machine, to detect surplus electric power which is generated due to a response delay of the electric power generator upon decreasing an amount of electric power generated by the electric power generator when the target driving force decreases, and to drive the rotating electric machine, when detecting the surplus electric power, with a phase current different from a maximum efficiency phase current with which an electric current value or electric power loss of the rotating electric machine is smallest so that the rotating electric machine consumes the surplus electric power.

Abstract: An electric vehicle control apparatus includes a first motor generator, a second motor generator, a booster, and a controller. The booster boosts an input voltage to the first motor generator and an output voltage from the second motor generator to expand an operable range of the first motor generator and an operable range of the second motor generator into a first expanded operable range and a second expanded operable range, respectively. The controller controls the first motor generator to drive a load with regenerative power supplied during braking of an electric vehicle and to control the first motor generator to be driven at a first inefficient operating point within the first expanded operable range and to control the second motor generator to be driven at a second inefficient operating point within the second expanded operable range in a case where the regenerative power is used.

Abstract: A vehicle includes an energy storage, a motor driver, an electric motor, and circuitry. The motor driver is configured to convert direct-current power to alternating-current power and to convert alternating-current power to direct-current power. The electric motor is connected to the energy storage via the motor driver to move the vehicle. The circuitry is configured to drive the electric motor with a first current value to consume excess electric power. The first current value is different from a minimum current value to generate regeneration power arising from a braking force. The circuitry is configured to drive the electric motor with a second current value smaller than the first current value if a temperature of the electric motor is higher than a first threshold temperature or a temperature of the motor driver is higher than a second threshold temperature.

Abstract: An electric vehicle control apparatus includes a first motor generator, a booster, and a controller. The booster boosts an input voltage to the first motor generator. The controller controls the first motor generator to drive a load with regenerative power supplied during braking of an electric vehicle and to be driven at an inefficient operating point within an operable range of the first motor generator in a case where the regenerative power is used, the booster boosting an input voltage to the first motor generator so as to expand the operable range.

Abstract: A vehicle includes an energy storage, a motor driver, an electric motor, and circuitry. The motor driver is configured to convert direct-current power to alternating-current power and to convert alternating-current power to direct-current power. The electric motor is connected to the energy storage via the motor driver to move the vehicle. The circuitry is configured to drive the electric motor with a first current value to consume excess electric power. The first current value is different from a minimum current value to generate regeneration power arising from a braking force. The circuitry is configured to drive the electric motor with a second current value smaller than the first current value if a temperature of the electric motor is higher than a first threshold temperature or a temperature of the motor driver is higher than a second threshold temperature.

Abstract: A vehicle includes an electric motor to move the vehicle. A motor driver is configured to convert direct-current power supplied from a voltage converter to an alternating-current power and to convert the alternating-current power supplied from the electric motor to direct-current power. Circuitry is configured to drive the electric motor with a first current value to generate a drive force to consume excess electric power. The first current value is different from a minimum current value to generate the same drive force. The circuitry is configured to drive the electric motor with a second current value smaller than the first current value to decrease the electric power consumption of the electric motor when a temperature of the electric motor exceeds a first threshold temperature or a temperature of the motor driver exceeds a second threshold temperature.

Abstract: A vehicle includes an electric power storage, an electric power generator, a rotating electric machine, and circuitry. The rotating electric machine is driven with electric power stored in the electric power storage and/or generated by the electric power generator to move the vehicle. The circuitry is configured to calculate target driving force for rotating electric machine, to detect surplus electric power which is generated due to a response delay of the electric power generator upon decreasing an amount of electric power generated by the electric power generator when the target driving force decreases, and to drive the rotating electric machine, when detecting the surplus electric power, with a phase current different from a maximum efficiency phase current with which an electric current value or electric power loss of the rotating electric machine is smallest so that the rotating electric machine consumes the surplus electric power.

Abstract: A vehicle includes an electric motor to move the vehicle. A motor driver is configured to convert direct-current power supplied from a voltage converter to an alternating-current power and to convert the alternating-current power supplied from the electric motor to direct-current power. Circuitry is configured to drive the electric motor with a first current value to generate a drive force to consume excess electric power. The first current value is different from a minimum current value to generate the same drive force. The circuitry is configured to drive the electric motor with a second current value smaller than the first current value to decrease the electric power consumption of the electric motor when a temperature of the electric motor exceeds a first threshold temperature or a temperature of the motor driver exceeds a second threshold temperature.

Abstract: An electric vehicle control apparatus includes a first motor generator, a booster, and a controller. The booster boosts an input voltage to the first motor generator. The controller controls the first motor generator to drive a load with regenerative power supplied during braking of an electric vehicle and to be driven at an inefficient operating point within an operable range of the first motor generator in a case where the regenerative power is used, the booster boosting an input voltage to the first motor generator so as to expand the operable range.

Abstract: A salient pole concentrated winding stator for an electric motor includes an annular stator core and a plurality of coils. The annular stator core includes a plurality of teeth. The plurality of coils are wound around the teeth such as to have different phases on the teeth adjacent in a circumferential direction. Each of the coils includes a first winding end and a second winding end, and at least one of the ends extends across the coil of a different phase. An end portion of the first winding end of one of the coils of the same phase that are adjacent in the circumferential direction is directly joined to an end portion of the second winding end of the other coil to form a joint portion without using an electric-power collection/distribution member. The joint portion is covered with an insulating material.

Abstract: An outer-rotor salient-pole concentrated winding motor includes a salient-pole concentrated winding stator and a rotor. The salient-pole concentrated winding stator includes stator core, coils and insulators. The stator core has a plurality of teeth that extend outward in a radial direction of the stator. Each of the insulators includes a projecting engaging portion and a recessed engaging portion. The projecting engaging portion projects outward in the circumferential direction. The recessed engaging portion is formed so that an outer separation wall of the insulator is recessed inward in the circumferential direction. The projecting engaging portion and the recessed engaging portion of adjacent insulators engage with each other when the teeth are inserted into the insulators.

Abstract: A salient pole concentrated winding stator for an electric motor includes an annular stator core and a plurality of coils. The annular stator core includes a plurality of teeth. The plurality of coils are wound around the teeth such as to have different phases on the teeth adjacent in a circumferential direction. Each of the coils includes a first winding end and a second winding end, and at least one of the ends extends across the coil of a different phase. An end portion of the first winding end of one of the coils of the same phase that are adjacent in the circumferential direction is directly joined to an end portion of the second winding end of the other coil to form a joint portion without using an electric-power collection/distribution member. The joint portion is covered with an insulating material.

Abstract: An outer-rotor salient-pole concentrated winding motor includes a salient-pole concentrated winding stator and a rotor. The salient-pole concentrated winding stator includes stator core, coils and insulators. The stator core has a plurality of teeth that extend outward in a radial direction of the stator. Each of the insulators includes a projecting engaging portion and a recessed engaging portion. The projecting engaging portion projects outward in the circumferential direction. The recessed engaging portion is formed so that an outer separation wall of the insulator is recessed inward in the circumferential direction. The projecting engaging portion and the recessed engaging portion of adjacent insulators engage with each other when the teeth are inserted into the insulators.

Abstract: A wet friction plate assembly which is capable of discharging the lubricant existing between the friction plate and the separation plate to restrict the accompanying rotation of the separation plate of a wet multiple-plate clutch etc. while it is disengaged.

Abstract: A wet friction plate of a hydraulic clutch or hydraulic brake for an automatic transmission having a reduced friction resistance in a non-engaged state. A plurality of friction materials disposed in an annular shape with a plurality of radial oil passages each provided between the adjacent friction materials are mounted at two radially inner and outer stages on a surface of a friction plate of a wet hydraulic clutch of an automatic transmission. The friction materials are brought into contact with an annular separator plate to transmit a torque. Inner peripheral edges of each of the friction materials are formed into a V-shape toward a radially outer side.

Abstract: The object of the present invention is to provide a wet friction plate assembly which is capable of discharging the lubricant existing between the friction plate and the separation plate to restrict the accompanying rotation of the separation plate of a wet multiple-plate clutch etc. while it is disengaged.

Abstract: A wet friction plate of a hydraulic clutch or hydraulic brake for an automatic transmission having a reduced friction resistance in a non-engaged state. A plurality of friction materials disposed in an annular shape with a plurality of radial oil passages each provided between the adjacent friction materials are mounted at two radially inner and outer stages on a surface of a friction plate of a wet hydraulic clutch of an automatic transmission. The friction materials are brought into contact with an annular separator plate to transmit a torque. Inner peripheral edges of each of the friction materials are formed into a V-shape toward a radially outer side.