Abstract: A power transmission unit including: a first prime mover; speed change gear pairs; output members; a differential mechanism, which has a first rotary element connected with the first prime mover, a second rotary element, and a third rotary element selectively outputting the power to the output member, and adapted to perform a differential action among those three rotary elements; and a second prime mover connected with the second rotary element. The speed change gear pair includes at lease one pair of first speed change gear pair, arranged between the first rotary element and the output member and allowed to transmit the torque selectively, and at least one pair of second speed change gear pair arranged between the third rotary element and the output member and allowed to transmit the torque selectively. A locking mechanism locks the second prime mover selectively to halt a rotation of the second prime mover.

Abstract: A power transmission unit, which includes: an engine; a plurality of speed change gear pairs, each of which has a different gear ratio, and to which a power outputted from the engine is transmitted; an output member outputting the power transmitted from any of the selected speed change gear pair; a differential mechanism, which has three rotary elements to perform a differential action, and in which a first rotary element of the three rotary elements is connected with the engine; and an electric motor, connected with a second rotary element of the three rotary elements; and wherein the plurality of speed change gear pairs include a first gear pair adapted to be connected with the first rotary element and the output member, and a second gear pair adapted to be connected with a third rotary element of the three rotary elements and the output member. The power transmission unit can reduce a power loss, and is downsized to be mounted on a vehicle easily.

Abstract: A drive apparatus for an electric vehicle includes a rotating electric device; a power source; and a terminal block. The rotating electric device drives the wheels of the vehicle. Electric power is supplied to the rotating electric device from the power source through a power-supply passage connected to the rotating electric device through the terminal block, which is fitted to the rotating electric device. The rotating electric device also includes a housing; a stator provided within the housing; and a coil-end positioned at the end of the stator in the axial direction. The terminal block is disposed near the coil-end at a position equal to or lower than the top surface of the housing. The terminal block is fitted to the rotating electric device so that the terminal block is electrically connected to the coil-end, by inserting the terminal block from the side surface of the housing.

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: A hybrid drive unit includes a power distribution mechanism for distributing a power from an engine to a first electric motor and to an output shaft; a transmission, which is arranged between the output shaft and a second electric motor in a manner to transmit a torque therebetween, and which is capable of setting an overdrive ratio where a speed of the output shaft is higher than that of a predetermined input element; and an engagement mechanism for connecting the engine selectively with the input element of the transmission, and for setting a speed change ratio of the transmission to the overdrive ratio. The hybrid drive unit is capable of setting an overdrive mode and is easy to be downsized.

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: A hybrid vehicle 20 includes an engine 22, motors MG1 and MG2, a power distribution integration mechanism 40, and a transmission 60. The power distribution integration mechanism 40 has a sun gear 41 connected with the motor MG1, a carrier 45 connected with the motor MG2, and a ring gear 42 connected with the engine 22. The transmission 60 has planetary gear mechanisms PG1 and PG2 and brakes B1 and B2. The planetary gear mechanism PG1 includes a sun gear 61 connected with the carrier 45 of the power distribution integration mechanism 40, a common carrier 64 connected with a driveshaft 69, and a ring gear 62. The planetary gear mechanism PG2 includes a sun gear 65 connected with the sun gear 41 of the power distribution integration mechanism 40, the common carrier 64 shared by the planetary gear mechanism PG1, and a ring gear 66. The brake B1 is configured to fix the ring gear 62, and the brake B2 is configured to fix the ring gear 66.

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 has a sun gear as an input element connected to a sun gear which is a first element of the power distribution and integration mechanism, a ring gear as a fixing element, and a carrier as an output element, and that is configured such that these three elements can differentially rotate with each other; and a clutch as a coupling mechanism capable of selectively coupling the sun gear of the transmission differential rotation mechanism and the carrier which is the second element of the power distribution and integration mechanism with a drive shaft.

Abstract: A control system for a drive unit of a vehicle, in which a power distribution mechanism is arranged on a route from a prime mover to a wheel, and a transmission is arranged on an output side of the power distribution mechanism. The control system includes a revolution frequency controller that restrains a variation in a revolution frequency of the prime mover by controlling a revolution frequency of the reaction force establishing device until a predetermined time elapses since a commencement of a shifting operation of the transmission. The control system is capable of restraining a variation in an output torque, in case of carrying out a shifting operation of a transmission arranged on an output side of a prime mover.

Abstract: A control system for a drive unit of a hybrid vehicle, which is capable of preventing an uncomfortable feeling, when a vehicle is driven by a power of an electric motor. The control system includes an electric motor, another power unit other than the electric motor, and a transmission, including a speed change inhibiting mechanism for inhibiting a speed change operation of the transmission in case the vehicle is run by a power of the electric motor.

Abstract: A control system for a drive unit of a vehicle, including a reaction force establishing device controlling a speed change ratio of a continuously variable transmission, and a clutch mechanism arranged on a power transmission route from the continuously variable transmission to a wheel and in which a torque capacity thereof is controllable. A first input torque control mechanism lowers a torque to be inputted to the clutch mechanism through the continuously variable transmission, by controlling a torque of the reaction force establishing device while the torque capacity of the clutch mechanism is being controlled. The system reduces a change in a torque inputted to a clutch mechanism, in case of carrying out a speed change operation of a continuously variable transmission and engaging the clutch mechanism.

Abstract: To execute a manual speed change to apply an engine brake in good response, and to ensure sufficient braking force in a drive unit having a continuously variable speed change unit and a geared speed change unit.

Abstract: A vehicle drive unit control system. The vehicle includes a prime mover arranged on a power transmission route from a continuously variable transmission to a wheel, a clutch mechanism arranged on a first route from the prime mover to the wheel, and a shift range or shift position can be shifted selectively between a drive range or drive position where a power can be transmitted through the first route and a non-drive range or non-drive position where a power cannot be transmitted through the first route. The control system includes a vehicle speed control demand judging mechanism judging a vehicle speed control demand in case of shifting the shift range or shift position from the non-drive range or non-drive position to the drive range or drive position; and a prime mover controller controlling torque of the prime mover based on the judged vehicle speed control demand.

Abstract: A control system capable of ensuring an engine braking force and a drive force even in case a failure occurs in a speed change ratio control or a deceleration control of an automatic transmission. The control system includes: a failure detecting mechanism for detecting a failure to set any of predetermined speed change ratios; and a speed change commanding mechanism for outputting a speed change command to set a speed change ratio larger than the current speed change ratio in accordance with a signal outputted when the failure detecting mechanism detects the failure.

Abstract: To provide a control system for a power transmission system capable of speed change control in conformity of a deceleration demand. For this purpose, there is provided a control system for a power transmission system, which has at least two transmission units having different responsiveness to a speed change and capable of setting a speed change ratio individually, and in which a total speed change ratio is determined according to the speed change ratios of the transmission units, comprising: a speed change control means for changing a priority order to carry out a speed change operation of the individual transmission units to achieve a predetermined deceleration in conformity with a content of the deceleration demand, when the predetermined deceleration is demanded.

Abstract: A hybrid drive device includes an input member connected to an engine; an output member connected to a wheel; a first rotating electrical machine; a second rotating electrical machine connected to the output member; and a differential gear device including at least four rotational elements. The input member, the output member, and the first rotating electrical machine are respectively connected to different rotational elements of the differential gear device. The output member is capable of selectively connecting to one of two rotational elements of the differential gear device to which neither the input member nor the first rotating electrical machine is connected.

Abstract: In a hybrid driving apparatus, a gear mechanism (3) having a first rotating element (7), a second rotating element (4) and a third rotating element (5) is provided, and a first driving power source (2), a second driving power source MG1 and a third driving power source MG2 are linked to the elements of the gear mechanism (3). The speed change ratio of the gear mechanism (3) can be altered. A driven member (18) to which the power output from an output element of the gear mechanism (3) is transmitted is provided. A first power transmission path (9) that connects the second driving power source MG1 to the driven member (18) is provided. A second power transmission path (17) that connects the third driving power source MG2 to the driven member (18) is provided. In this hybrid driving apparatus, at least one of the first power transmission path (9) and the second power transmission path (17) is provided with a transmission (19).

Abstract: A hybrid drive unit that includes an input shaft connected to an engine; an output shaft connected to wheels; a first rotary electric machine; a second rotary electric machine connected to the output shaft; a power distribution device that distributes a rotational driving force of the input shaft to the output shaft and to the first rotary electric machine; a second rotary electric machine fixing device that selectively fixes a rotor of the second rotary electric machine; and a transmission cutoff device capable of cutting off transmission of rotation between the output shaft and the second rotary electric machine at least in a state when the rotor of the second rotary electric machine is fixed.