Abstract: A friction plate (11) includes a plate (1A) with a disc shape and a friction material (F1, F2) that is fixed to aside face (1a) of the plate (1A). The friction material (F1, F2) is disposed so that one or both of an inner peripheral side and an outer peripheral side is nonuniform in an inner and outer peripheral direction with respect to a circumferential direction around a center (CT1) of the plate (1A). Thus, there is an increase in the amount of lubrication oil that is fed to a surface of friction material segments (F1, F2) and there is an increase in a separation force in an axial direction between a friction plate (11) and a separator plate or an end plate.

Abstract: A vehicle drive device that includes a case forming a first accommodating space that accommodates a speed change device and a second accommodating space that accommodates a rotary electric machine; an storage that is disposed under the first accommodating space and stores oil; a hydraulic pump including a suction that suctions the oil from the oil storage; a first oil passage that supplies the oil discharged by the hydraulic pump to the speed change device as hydraulic oil; a second oil passage that supplies the oil discharged by the hydraulic pump to the rotary electric machine as cooling oil; and a third oil passage that returns the oil supplied to the rotary electric machine, from the second accommodating space to the oil storage, by allowing the oil to flow in a direction from the second accommodating space toward the first accommodating space.

Abstract: A power transmission apparatus includes a first electric motor, a power split mechanism, a second electric motor, a case, a support wall, and a breather mechanism. The case accommodates the first electric motor, the power split mechanism, and the second electric motor. The support wall is provided between the power split mechanism and the second electric motor. The breather mechanism is located in a rotational angle range that is at least equal to 90 degrees and is smaller than 180 degrees. The breather mechanism has a through hole and a breather chamber. The breather chamber is provided at a case inner side end of the through hole and is opened in a direction that does not oppose a virtual surface that passes through the rotational axis at a rotational angle of 90 degrees of the second electric motor.

Abstract: A lubricating structure for a transmission includes: a case that includes a center support fixation portion that extends from the inner peripheral surface toward the radially inner side, and that houses the transmission on the first side of the center support fixation portion in the axial direction of the transmission; a center support that is press-fitted into the center support fixation portion, that rotatably supports an input shaft of the transmission, and that rotatably supports a clutch drum of the transmission; a bearing provided between the clutch drum and the center support in the axial direction; an oil reservoir portion formed on the center support on the second side of the center support fixation portion in the axial direction to open on the upper side in the vertical direction, the second side being opposite to the first side; and an oil passage formed in the center support, one end of the oil passage opening in the oil reservoir portion, and the other end of the oil passage opening in a space be

Abstract: A vehicle hydraulic control device for a rotating electrical machine and associated gear mechanism. Oil passages are configured with relief valves such that a first relief valve discharges oil in a first oil passage when an oil pressure in the first oil passage located downstream of a throttle portion becomes higher than a predetermined first set oil pressure, and a second relief valve allows a part of the second oil passage which is located upstream of the second relief valve to communicate with a part of the second oil passage which is located downstream of the second relief valve when an oil pressure in the second oil passage located upstream of the second relief valve becomes higher than a predetermined second set oil pressure set higher than the first set oil pressure.

Abstract: A power transmission apparatus includes a first electric motor, a power split mechanism, a second electric motor, a case, a support wall, and a breather mechanism. The case accommodates the first electric motor, the power split mechanism, and the second electric motor. The support wall is provided between the power split mechanism and the second electric motor. The breather mechanism is located in a rotational angle range that is at least equal to 90 degrees and is smaller than 180 degrees. The breather mechanism has a through hole and a breather chamber. The breather chamber is provided at a case inner side end of the through hole and is opened in a direction that does not oppose a virtual surface that passes through the rotational axis at a rotational angle of 90 degrees of the second electric motor.

Abstract: A vehicle drive device that includes a case forming a first accommodating space that accommodates a speed change device and a second accommodating space that accommodates a rotary electric machine; an storage that is disposed under the first accommodating space and stores oil; a hydraulic pump including a suction that suctions the oil from the oil storage; a first oil passage that supplies the oil discharged by the hydraulic pump to the speed change device as hydraulic oil; a second oil passage that supplies the oil discharged by the hydraulic pump to the rotary electric machine as cooling oil; and a third oil passage that returns the oil supplied to the rotary electric machine, from the second accommodating space to the oil storage, by allowing the oil to flow in a direction from the second accommodating space toward the first accommodating space.

Abstract: A lubricating structure that includes a case, a center support, a bearing, an oil reservoir formed on the center support on a second side of the center support fixation portion in the axial direction to open on an upper side in a vertical direction, the second side being opposite to the first side, and an oil passage formed in the center support, one end of the oil passage opening in the oil reservoir, and the other end of the oil passage opening in a space between the clutch drum and the center support in the axial direction.

Abstract: A vehicle hydraulic control device for a rotating electrical machine and associated gear mechanism. Oil passages are configured with relief valves such that a first relief valve discharges oil in a first oil passage when an oil pressure in the first oil passage located downstream of a throttle portion becomes higher than a predetermined first set oil pressure, and a second relief valve allows a part of the second oil passage which is located upstream of the second relief valve to communicate with a part of the second oil passage which is located downstream of the second relief valve when an oil pressure in the second oil passage located upstream of the second relief valve becomes higher than a predetermined second set oil pressure set higher than the first set oil pressure.

Abstract: A vehicle drive system, including a motor generator; a gear group having a plurality of gears; and a motor cooling circuit for cooling the motor generator. The system further includes a lubricating circuit for lubricating the gear group; a cooler circuit in which an oil cooler is provided; and an oil pump that supplies oil to each circuit. The motor cooling circuit is arranged in series with and downstream of the cooler circuit, and the lubricating circuit is arranged parallel to the cooler circuit with respect to the oil pump.

Abstract: A vehicle drive system, including a motor generator; a gear group having a plurality of gears; and a motor cooling circuit for cooling the motor generator. The system further includes a lubricating circuit for lubricating the gear group; a cooler circuit in which an oil cooler is provided; and an oil pump that supplies oil to each circuit. The motor cooling circuit is arranged in series with and downstream of the cooler circuit, and the lubricating circuit is arranged parallel to the cooler circuit with respect to the oil pump.

Abstract: A planetary gear train includes a carrier having a first side plate, a second side plate disposed in parallel to the first side plate and pinions rotatably supported by the first and second side plates; and a ring member secured to an outer edge of the second side plate. The first side plate has a plurality of first convex portions whose edge portion form an outer edge and a plurality of first concave portions formed between adjacent first convex portions. The second side plate has a plurality of second convex portions whose edge portion form an outer edge and whose width in a peripheral direction is wider than the first convex portion, and a plurality of carrier bridges axially extended from a part between the plurality of second convex portions to the plurality of first concave portions and secured to the first concave portion.

Abstract: An oil lubricating structure includes a main body case having a housing chamber in which an element requiring a supply of oil is housed, an oil reservoir which is provided below the main body case and has an oil chamber in which oil collects, an oil supply portion which has an inlet port through which oil is drawn in from the oil chamber and which supplies oil collected in the oil chamber to the element requiring a supply of oil through the inlet port, and a duct member provided in the oil chamber. An oil return hole is provided which is formed in a bottom surface of the main body case toward the front of the oil reservoir and through which oil returns to the oil reservoir from the main body case. One end portion of the duct member is connected to the oil return hole and the other end portion of the duct member is positioned farther to the rear than the inlet port.

Abstract: A planetary gear lubrication unit includes a planetary gear unit having a sun gear and a carrier that has a plurality of pinion shafts, wherein each of the plurality of pinion shafts rotatably supports a pinion, a plurality of side plates that support the plurality of pinion shafts, and a rotating shaft arranged in a center portion of the planetary gear unit, in which lubrication oil supplied from the rotating shaft is led to a portion of the pinion shafts that support the pinions.

Abstract: A planetary gear train includes a carrier having a first side plate, a second side plate disposed in parallel to the first side plate and pinions rotatably supported by the first and second side plates; and a ring member secured to an outer edge of the second side plate. The first side plate has a plurality of first convex portions whose edge portion form an outer edge and a plurality of first concave portions formed between adjacent first convex portions. The second side plate has a plurality of second convex portions whose edge portion form an outer edge and whose width in a peripheral direction is wider than the first convex portion, and a plurality of carrier bridges axially extended from a part between the plurality of second convex portions to the plurality of first concave portions and secured to the first concave portion.

Abstract: A planetary gear lubrication unit includes a planetary gear unit having a sun gear and a carrier that has a plurality of pinion shafts, wherein each of the plurality of pinion shafts rotatably supports a pinion, a plurality of side plates that support the plurality of pinion shafts, and a rotating shaft arranged in a center portion of the planetary gear unit, in which lubrication oil supplied from the rotating shaft is led to a portion of the pinion shafts that support the pinions.