Abstract: In a rotating electrical machine configured with a rotor and stator, a lubricant supply portion is configured to supply a lubricant from within. A communication passage is provided in either the rotor support member or the sensor rotor, and is configured so as to provide a passage from a first space, which extends radially outward from the axial first direction side of the sensor rotor and is formed between the support wall and the rotor support member, with a second space, which is formed between the sensor rotor and the rotor support member. The case of the machine has a support wall extending at least in a radial direction to an axial first direction side, which is one side in an axial direction of the rotating electrical machine, and after lubricating the bearing, the lubricant is discharged from the second space to the first space through the communication passage.

Abstract: A fastening portion is formed from a rivet hole of a first side wall portion of a clutch drum, a rivet hole of a second side wall portion of a clutch drum, and a rivet that is inserted into the rivet hole and the rivet hole to hold together the first side wall portion and the second side wall portion. The fastening portion is provided between a first engagement side oil chamber enclosed by the clutch drum and a clutch piston, and a second engagement side oil chamber enclosed by the clutch drum and a clutch piston.

Abstract: An automatic transmission (11) includes a planetary gear set (PS), first to third clutches (C-1 to C-3), first to third brakes (B-1 to B-3), and a counter gear (100) that outputs shifted rotation. The counter gear (100) is placed axially on one side of the planetary gear set (PS), and the second brake (B-2) is placed axially on the opposite side from of the counter gear (100) from the planetary gear set (PS). The second brake (B-2) that does not make higher speed rotation than other clutches and brakes can thus be separated from the planetary gear set (PS), and other clutches and brakes and the counter gear (100) are arranged near the planetary gear set (PS). Thus, members having a large thickness are reduced in length, whereby the automatic transmission is made compact and reduced in weight.

Abstract: In a power transmission device, a breather chamber having an opening on its one end side and extending coaxially with the countershaft is formed in a countershaft that transmits power from an output shaft of an automatic transmission to a differential mechanism. An inner end of a vent pipe placed so as to extend through a transmission case and that includes the inner end and an outer end each having an opening is inserted in the opening of the breather chamber. A plug, which closes a gap between an inner peripheral surface of the breather chamber and an outer peripheral surface of the inner end of the vent pipe so as to allow air to flow between the inside of the transmission case and the breather chamber and so as to restrict entrance of hydraulic oil into the breather chamber, is placed in the opening of the breather chamber.

Abstract: Leakage oil from a hydraulic actuator operating a dry clutch is prevented from leaking into a dry space where the dry clutch is placed. A space formed by the back surface of a piston of a hydraulic actuator, a coupling plate, and a cylinder portion is sealed by a first seal portion and a second seal portion. Oil leaked from a hydraulic oil chamber through the piston is stored in the space, and is returned to a wet space in a case through an oil passage.

Abstract: A hybrid drive system includes an input shaft of an automatic transmission, a clutch, an intermediate shaft, and a first gear disposed on a first shaft coaxial with an engine output shaft. An electric motor and a second gear provided on an output shaft of the electric motor are disposed on a second shaft. A rotation of the engine output shaft is transmitted to the input shaft through the clutch and the intermediate shaft, and a rotation of the electric motor is transmitted to the input shaft through the second gear and the first gear. The intermediate shaft is supported by a first support wall through a bearing. The clutch is disposed between the intermediate shaft and the engine output shaft, and a front side of the input shaft is rotatably supported by a second support wall, and connected to a rear side of the intermediate shaft through a spline.

Abstract: A speed change device configured with an input member and an output member. The speed change device includes a speed change mechanism in which a plurality of shift speeds are established in accordance with respective engagement states of a plurality of friction engagement elements to transfer rotation of the input member to the output member. A slip travel mode is provided in which the vehicle is run while transferring torque from the input member to the output member with one of the friction engagement elements for establishment of each of the shift speeds caused to slip. A slip engagement element is the friction engagement element to be engaged commonly for establishment of at least a forward start shift speed and a reverse start shift speed.

Abstract: A rotating electrical machine configured with a rotor and stator. The rotor is rotatably supported radially inside of a stator that has coil end portions on both sides in an axial direction, and which is structured so that oil is supplied from an axial first direction side to the coil end portions on the both sides in the axial direction. A communication oil passage provided in at least one of the rotor and the rotor support member, is configured to communicate with a first opening and a second opening from an oil collecting portion. The first opening opens radially inside the coil end portion on the axial first direction side, and the second opening opens radially inside the coil end portion on an axial second direction side, which is the other side in the axial direction of the rotor.

Abstract: A hybrid drive device having an engine coupling shaft member, a speed change mechanism, a rotating electrical machine, and an engine connecting clutch. A first lubricating oil passage scatters lubricating oil from radially inside to radially outside of first and second friction plates. A first one-way clutch is interposed between an engine coupling shaft member and a coupling member, and is configured to not be engaged when rotation of the engine coupling shaft member becomes lower than rotation of the coupling member. A second one-way clutch is configured not to be engaged when rotation of the rotating electrical machine becomes lower than rotation of the coupling member. An engine driven oil pump generates an oil pressure to be supplied by a driving force of the internal combustion engine or a driving force of the rotating electrical machine regardless of engagement or disengagement of the engine connecting clutch.

Abstract: A transmission comprising at least four planetary gear sets and at least six coupling elements which are all disposed coaxially with each other, and an input rotary member which is disposed on one of opposite axial sides of the transmission and which receives an input rotary motion, the transmission having a plurality of speed positions which have respective different speed ratios and which are established by engaging actions of respective combinations of coupling elements selected from the at least six coupling elements and releasing actions of respective combinations of the other coupling elements selected from the at least six coupling elements, wherein an improvement includes: the at least six coupling elements including at least two input clutches which are all connected to the input rotary member and which are all disposed on one of opposite axial sides of the at least four planetary gear sets, which one side corresponds to the one of the opposite axial sides of the transmission.

Abstract: A vehicular automatic transmission includes three single pinion planetary gear sets and a plurality of engagement elements. A plurality of gears is selectively established by three of the plurality of engagement elements being engaged and three of the plurality of engagement elements being released. One of the plurality of engagement elements is a dedicated reverse engagement element that is engaged when a reverse gear is established and is released when a forward gear is established.

Abstract: To provide a hybrid drive speed change device in which a rotation sensor can be disposed appropriately from the viewpoint of reducing the axial dimension of the device. A rotary electric machine MG is disposed coaxially with an input shaft M, and includes a stator St and a rotor Ro provided radially inwardly of the stator St. An oil pump 18 includes a pump case 90, 91 in which a pump chamber 18a is formed, and a pump rotor 18b rotatably housed in the pump chamber 18a. The pump rotor 18b is disposed coaxially with the input shaft M. A rotation sensor 19 is disposed radially outwardly of the pump chamber 18a and radially inwardly of the stator St of the rotary electric machine MG, and disposed to overlap the oil pump 18 as seen from the radial direction of the input shaft M.

Abstract: A vehicle drive device that includes a speed change mechanism; a fluid transmission device provided closer to an engine attachment side than the speed change mechanism is and including a lock-up clutch; an electric motor having a rotor and a stator and connecting the rotor to an input portion of the fluid transmission device; and an engine power cut-off clutch that transmits or cuts off a driving force of an engine to or from the fluid transmission device.

Abstract: There is provided a first and second bearing supporting a clutch case at first and second axial sides in a radial direction, a rotor of a rotary electrical machine is supported by the clutch case, a gap between an outer peripheral face of a pump drive shaft 10 and an inner peripheral face of a drive shaft insertion hole 90c is a distribution passage L of oil flowing from a pump chamber 18a to the first bearing 51, and a distribution passage diameter difference, which is a difference between a diameter ?a of the outer peripheral face of the pump drive shaft 10 and a diameter ?c of the inner peripheral face of the drive shaft insertion hole 90c in the distribution passage L, is set so that the distribution passage L functions as a narrowed portion which limits a flow rate of oil.

Abstract: A power transmission unit in which an inspection and tuning of an electric motor can be carried out easily. In the power transmission unit, a rotor of the electric motor is arranged between a first shaft of an input side and a second shaft of an output side, and in which the first shaft, the second shaft, and the rotor are integrally connected at least in a rotational direction. The first shaft is connected with the rotor, and the first shaft is also connected with the second shaft.

Abstract: A vehicle drive device that includes a speed change mechanism; a hydraulic transmission provided closer to an engine attachment side than the speed change mechanism is and including a lock-up clutch; an electric motor having a rotor and a stator and connecting the rotor to an input portion of the hydraulic transmission; and an engine power cut-off clutch that transmits or cuts off a driving force of an engine to or from the hydraulic transmission.

Abstract: A hybrid drive device including an electric motor; an automatic transmission; a first oil passage; and a second oil passage branched from the first oil passage and that guides the oil to a friction element that is engaged for establishment of a speed in the automatic transmission. An orifice is provided in the first oil passage downstream of the second oil passage. A switching valve for the friction element is provided in the second oil passage to be switched between communicated and blocked states. A hydraulic servo for the friction element is supplied with a hydraulic pressure to control the friction element between engaged, disengaged, and slip states. The switching valve includes a control oil chamber that communicates with the hydraulic servo, and is switched into the blocked state when the friction element is disengaged and into the communicated state when the friction element is engaged or the slip state.

Abstract: A hydraulic clutch including a clutch drum with an outer cylinder fitted with a plurality of clutch plates and a side wall; a clutch piston that defines together with the clutch drum an engagement oil chamber, and moves in an axial direction to press the clutch plates by hydraulic pressure supplied to the engagement oil chamber; and a cancel plate that defines together with the clutch piston a cancel oil chamber that cancels centrifugal hydraulic pressure. The side wall of the clutch drum is formed with a first oil passage that radially extends and is in communication with the engagement oil chamber, and a second oil passage that radially extends and is in communication with the cancel oil chamber. One of the first and second oil passages is at least partially included in a range of an axial width of the other of the first and second oil passages.

Abstract: A hybrid drive device including an electric motor; an automatic transmission; a lubricating oil passage to which a lubricating oil pressure is supplied; and a switching valve that is switched between a first state where the lubricating oil passage communicates with a first lubricating oil passage that guides lubricating oil to the automatic transmission, and a second state where the lubricating oil passage communicates with a second lubricating oil passage that guides the lubricating oil to the electric motor. The electric motor and an internal combustion engine output shaft are operable in conjunction with the automatic transmission. The switching valve is switched from the first state to the second state when a vehicle is in a stationary state or running at a speed of a predetermined value or less including the stationary state of the vehicle.

Abstract: A transmission device includes a first clutch and a second clutch that is disposed circumferentially inward of the first clutch so as to overlap with the first clutch as viewed from a radial direction. The first clutch includes a first clutch drum, a first clutch piston that is axially movable by hydraulic pressure supplied to a first engagement side oil chamber on an inner circumferential side of the first clutch drum, and a first cancel plate that defines together with the first clutch piston a first cancel oil chamber that cancels centrifugal hydraulic pressure. The first cancel plate is fastened between the first clutch drum and a second clutch drum of the second clutch.