Abstract: A hybrid vehicle includes an engine, motors, and a power distribution and integration mechanism that are coaxially arranged with respect to each other. The hybrid vehicle also includes a transmission including a transmission differential rotation mechanism that is a single pinion planetary gear mechanism having a sun gear, a ring gear, and a carrier that is connected to a drive shaft, and that is configured such that these three elements can differentially rotate with each other; and a clutch capable of selectively coupling one of or both of the carrier and the sun gear of the power distribution and integration mechanism with the sun gear of the transmission differential rotation mechanism.

Abstract: In a 2-motor drive mode with connection of both motors with a driveshaft by means of a transmission, a hybrid vehicle sets torque commands of the motors based on a torque demand set at step S110, in order to minimize the sum of a loss of the motors and to ensure output of a power equivalent to a preset torque demand to the driveshaft.

Abstract: A hybrid vehicle 20 of the invention is equipped with a power distribution integration mechanism 40 and a transmission 60. The power distribution integration mechanism 40 is a double pinion planetary gear mechanism constructed to include a carrier 45 connecting with a motor MG2, a sun gear 41 connecting with a motor MG1, and a ring gear 42 connecting with an engine 22 and to have a gear ratio of approximately 0.5. The transmission 60 includes a three element-type first change speed planetary gear mechanism PG1, a three element-type second change speed planetary gear mechanism PG2, a brake clutch BC1 configured to fix a ring gear 62 of the first change speed planetary gear mechanism PG1 in a non-rotatable manner and release the ring gear 62 in a rotatable manner, and a brake clutch BC2 configured to enable and disable power transmission via the second change speed planetary gear mechanism PG2.

Abstract: When a predetermined change speed state shift condition is satisfied while the transmission connects a carrier with a drive shaft, a hybrid vehicle performs a rotational speed adjustment process of conforming a rotational speed of a motor to a target rotational speed based on a gear ratio of the transmission and a rotational speed of the drive shaft, a connection a sun gear with the drive shaft by a gear train of the transmission corresponding to a target speed, a power transfer process of transferring power between the motors in a simultaneous engagement state to make the motors output power required in a post-change speed state corresponding to a target speed, and a disconnection the carrier from the drive shaft.

Abstract: A transmission includes a transmission case, an oil pan that is defined in a lower portion within the transmission case and stores a lubricating medium capable at least of lubricating components of the transmission, movable engagement members capable of engaging with two elements that respectively correspond thereto, and electromagnetic actuators that respectively move a corresponding one of the movable engagement members to allow a connection between the two elements and a release of the connection.

Abstract: The hybrid vehicle transfers power between the two motors, releases a coupling between one of the motors and the drive shaft, adjusts the rotation speed of one of the motors which is released from the coupling to the drive shaft by the transmission so as to enable drive source element connection, and connects the clutch as well as cranks the engine by either one or the other motor when the engine is started while the clutch is released, the engine is stopped, both the motors are coupled to the drive shaft as well as at least one of the motors is caused to output power.

Abstract: A hybrid vehicle 20 of the invention is equipped with a power distribution integration mechanism 40 and a transmission 60. The power distribution integration mechanism 40 includes a carrier 45 connecting with a motor MG2, a sun gear 41 connecting with a motor MG1, and a ring gear 42 connecting with an engine 22.

Abstract: When a required speed ratio as a required value of a speed ratio between an engine and a driveshaft becomes equal to or less than a lower limit speed ratio that is not more than an n-th shift speed ratio during an n-th speed state of a transmission, a hybrid vehicle controls the engine, two motors, and the transmission to ensure output of power based on a torque demand to the driveshaft while performing an engine rotational speed adjustment of making a rotational speed of the engine equal to a shift rotational speed corresponding to an upper side shift speed ratio or an effective shift speed ratio and a shift from an n-th speed state to an (n+1)-th speed state.

Abstract: In a 2-motor drive mode with connection of both motors with a driveshaft by means of a transmission, a hybrid vehicle sets torque commands of the motors to substantially equalize an output torque of the second motor with an output torque of the first motor and to ensure output of a torque equivalent to a preset torque demand to the driveshaft. This arrangement ensures continuous output of a relatively large torque.

Abstract: A clutch includes a first engaging portion of a first motor shaft, a second engaging portion of a carrier shaft, a third engaging portion of a sun gear shaft having a flange portion facing the second engaging portion, a first movable engaging member that can engage with both the first and third engaging portions, and a second movable engaging member including a sliding portion slidably supported by the sun gear shaft, an engaging portion that can engage with the second engaging portion on the side closer to the carrier shaft than the flange portion, and a connecting portion that connects the sliding portion and the engaging portion and has a projecting piece inserted into a hole portion of the flange portion, and actuators.

Abstract: The hybrid vehicle includes an engine, two motors, and a power distribution integration mechanism arranged coaxially with one another and a transmission. The transmission includes a transmission shaft extended in parallel with a first motor shaft and a second motor shaft, a first coupling gear train in combination with a second coupling gear train and a clutch arranged to selectively connect a ring gear and a sun gear of the power distribution integration mechanism to the transmission shaft, a deceleration mechanism connected with the transmission shaft and arranged to decelerate power from the transmission shaft and output the power of the reduced speed from a carrier, and a clutch arranged to selectively connect the carrier and the ring gear to a driveshaft.

Abstract: The hybrid vehicle includes an engine; a motor capable of inputting power and a motor capable of outputting power; a power distribution and integration mechanism including a sun gear connected to the inputting motor, a carrier connected to the outputting motor, and a ring gear connected to the engine; and a transmission capable of selectively transmitting power outputted through the sun gear and a first motor shaft and power outputted through the carrier and a carrier shaft to a drive shaft with a change in speed ratio as well as having a clutch and a fixing member for non-rotatably fixing the sun gear of the power distribution and integration mechanism.

Abstract: In a 2-motor drive mode with connection of both motors with a driveshaft by means of a transmission, a hybrid vehicle sets torque commands of the motors based on a torque demand set at step S110, in order to minimize the sum of a loss of the motors and to ensure output of a power equivalent to a preset torque demand to the driveshaft.

Abstract: In a hybrid vehicle, in order to stop an engine while a clutch is kept engaged and to transmit power from a motor to a drive shaft by changing a change speed state of a transmission when the power from a second motor is being transmitted to the drive shaft by the transmission, for example, a rotation speed of the first motor is adjusted so that the first motor can be connected to the drive shaft with the clutch disengaged while torque commands for both motors are set so that the power based on torque demand is outputted to the drive shaft, the power is transferred from the second motor to the first motor while both motors are connected to the drive shaft by the transmission, and the connection between the second motor and the drive shaft by the transmission is disconnected.

Abstract: In a 2-motor drive mode with connection of both motors with a driveshaft by means of a transmission, a hybrid vehicle specifies one of the motors as a main motor of preferentially outputting power. Torque commands of the motors are then set to make the motor specified as the main motor preferentially output the power over the other motor specified as an auxiliary motor and to ensure output of a torque equivalent to a torque demand to the driveshaft.

Abstract: A clutch included in a transmission includes a first engaging portion provided in a first motor shaft, a second engaging portion provided in a carrier shaft spaced apart from the first engaging portion in an axial direction, a third engaging portion provided in sun gear shaft so as to surround the first and second engaging portions, a first movable engaging member that can engage with both the first and third engaging portions and is movable in an axial direction, a second movable engaging member that can engage with both the second and third engaging portions and is movable in an axial direction and first and second actuators that move the movable engaging members in an axial direction.

Abstract: A hybrid vehicle includes an engine, motors, and a power distribution and integration mechanism that are coaxially arranged with respect to each other. The hybrid vehicle also includes a transmission including a transmission differential rotation mechanism that is a single pinion planetary gear mechanism having a sun gear, a ring gear, and a carrier that is connected to a drive shaft, and that is configured such that these three elements can differentially rotate with each other; and a clutch capable of selectively coupling one of or both of the carrier and the sun gear of the power distribution and integration mechanism with the sun gear of the transmission differential rotation mechanism.

Abstract: There is provided a hybrid vehicle 20 which stops an engine 22 in a state in which a drive source element connection by a clutch C0 is released; a transmission 60 is used to couple only one of the motors MG1 and MG2 to a drive shaft 67; and one of the motors MG1 and MG2 is caused to output power; at this time, in order to start the engine 22, a rotation speed of the other one of the motors MG1 and MG2 which does not correspond to a current speed ratio ? and is not connected to the drive shaft 67 is adjusted so as to enable the drive source element connection; and the clutch C0 is connected as well as the engine 22 is cranked by the motor MG1 or MG2.

Abstract: A hybrid vehicle includes an engine, motors configured to input and output power, a power distribution integration mechanism, and a transmission. The power distribution integration mechanism has a sun gear connected with one of the motors, a carrier connected with the other motor, and a ring gear connected with the engine. The transmission includes a first speed change mechanism and a second speed change mechanism. The first speed change mechanism has a first speed gear train and a third speed gear train arranged to connect the carrier of the power distribution integration mechanism with a driveshaft. The second speed change mechanism has a parallel shaft-type gear train that is not used alone to set the speed ratio.

Abstract: In a 2-motor drive mode with connection of both motors to a driveshaft by means of a transmission, a hybrid vehicle sets torque commands of the motors to make a work performed by the second motor substantially equal to a work performed by the first motor and to ensure output of a torque equivalent to a preset torque demand to the driveshaft. This arrangement connects both motors to the driveshaft by means of the speed change-transmission assembly and ensures continuous output of a relatively large torque.