Abstract: In an oil pump for an automatic transmission, a suction port is adapted to be connected to a first suction passage. The first suction passage is arranged in parallel with a second suction passage connected to an auxiliary pump. The first and second suction passages branch from an upstream suction passage leading to an oil strainer. A discharge outlet is adapted to be connected to a first discharge passage. An air vent hole is disposed downstream of the suction port and upstream of the discharge outlet. A communication passage is connected to the air vent hole and adapted to reach a predetermined oil level in an oil pan so as to communicate the air vent hole with inside of oil in the oil pan.

Abstract: A sleeve supporting structure for an automatic transmission has an input shaft and an oil pump with an inner gear. The sleeve supporting structure includes a sleeve member that is supported at least two portions thereof in an axial direction of the sleeve member and configured to transmit rotation of the input shaft to the inner gear and drive the oil pump, an outer member that is disposed on a radial outside of the sleeve member, and an elastic member that is disposed on the sleeve member. The elastic member is disposed in a predetermined position in the axial direction of the sleeve member in which an amplitude of vibration of the sleeve member becomes maximum when a vibrating force is applied to the sleeve member from the inner gear. The elastic member is opposed to the outer member in the predetermined position.

Abstract: A sleeve supporting structure for an automatic transmission, including a sleeve member disposed on a radial outside of an input shaft, a rotational shaft portion disposed in a motor, an oil pump housing, and a stationary member supporting an outer circumferential surface of the rotational shaft portion and including a projection that projects toward a side of the oil pump. The sleeve member has one axial end portion overlapped with the rotational shaft portion in the radial direction thereof and an opposite axial end portion meshing with an inner gear of the oil pump, and is supported by an inner circumferential surface of the oil pump housing and an inner circumferential surface of the rotational shaft portion. The projection of the stationary member is fitted onto an outer circumferential surface of the oil pump housing so as to form a faucet joint in cooperation therewith.

Abstract: In an oil pump for an automatic transmission, a suction port is adapted to be connected to a first suction passage. The first suction passage is arranged in parallel with a second suction passage connected to an auxiliary pump. The first and second suction passages branch from an upstream suction passage leading to an oil strainer. A discharge outlet is adapted to be connected to a first discharge passage. An air vent hole is disposed downstream of the suction port and upstream of the discharge outlet. A communication passage is connected to the air vent hole and adapted to reach a predetermined oil level in an oil pan so as to communicate the air vent hole with inside of oil in the oil pan.

Abstract: In an oil pump structure of an automatic transmission using a torque converter, a hydraulic pressure chamber is defined by a pump housing and a pump cover, to rotatably accommodate therein inner and outer rotors. First and second inflow ports respectively communicating with an oil strainer and a control valve are formed in the outside surface of the pump cover separately from each other. First and second oil inflow passages communicating with the respective inflow ports, a merged-flow portion that downstream portions of the first and second oil inflow passages are merged with each other, a downstream-side oil distribution channel intercommunicating a downstream side of the merged-flow portion and the hydraulic pressure chamber, are formed in at least one of the pump housing and the pump cover.

Abstract: A sleeve supporting structure for an automatic transmission, including a sleeve member disposed on a radial outside of an input shaft, a rotational shaft portion disposed in a motor, an oil pump housing, and a stationary member supporting an outer circumferential surface of the rotational shaft portion and including a projection that projects toward a side of the oil pump. The sleeve member has one axial end portion overlapped with the rotational shaft portion in the radial direction thereof and an opposite axial end portion meshing with an inner gear of the oil pump, and is supported by an inner circumferential surface of the oil pump housing and an inner circumferential surface of the rotational shaft portion. The projection of the stationary member is fitted onto an outer circumferential surface of the oil pump housing so as to form a faucet joint in cooperation therewith.

Abstract: A sleeve supporting structure for an automatic transmission having an input shaft and an oil pump with an inner gear, the sleeve supporting structure including a sleeve member that is supported at at least two portions thereof in an axial direction of the sleeve member and configured to transmit rotation of the input shaft to the inner gear and drive the oil pump, an outer member that is disposed on a radial outside of the sleeve member, and an elastic member that is disposed on the sleeve member, the elastic member being disposed in a predetermined position in the axial direction of the sleeve member in which an amplitude of vibration of the sleeve member becomes maximum when a vibrating force is applied to the sleeve member from the inner gear, the elastic member being opposed to the outer member in the predetermined position.

Abstract: A starting apparatus includes a drive motor and a reduction gear having a planetary gear for starting an engine by the drive motor via the reduction gear. An internal gear of the reduction gear includes a locking projection projecting in an axial direction. A rotation restricting member is formed with a guide groove in which the locking projection is loosely received and guided in a circumferential direction. A shock absorbing member is held in the guide groove in a state of being elastically in close contact with the locking projection in the circumferential direction. Thus, shock load to the internal gear is alleviated from the start.

Abstract: In an oil pump structure of an automatic transmission using a torque converter, a hydraulic pressure chamber is defined by a pump housing and a pump cover, to rotatably accommodate therein inner and outer rotors. First and second inflow ports respectively communicating with an oil strainer and a control valve are formed in the outside surface of the pump cover separately from each other. First and second oil inflow passages communicating with the respective inflow ports, a merged-flow portion that downstream portions of the first and second oil inflow passages are merged with each other, a downstream-side oil distribution channel intercommunicating a downstream side of the merged-flow portion and the hydraulic pressure chamber, are formed in at least one of the pump housing and the pump cover.

Abstract: A starting apparatus includes a drive motor and a reduction gear having a planetary gear for starting an engine by the drive motor via the reduction gear. An internal gear of the reduction gear includes a locking projection projecting in an axial direction. A rotation restricting member is formed with a guide groove in which the locking projection is loosely received and guided in a circumferential direction. A shock absorbing member is held in the guide groove in a state of being elastically in close contact with the locking projection in the circumferential direction. Thus, shock load to the internal gear is alleviated from the start.

Abstract: A starting apparatus includes a drive motor and a reduction gear having a planetary gear for starting an engine by the drive motor via the reduction gear. An internal gear of the reduction gear includes a locking projection projecting in an axial direction. A rotation restricting member is formed with a guide groove in which the locking projection is loosely received and guided in a circumferential direction. A shock absorbing member is held in the guide groove in a state of being elastically in close contact with the locking projection in the circumferential direction. Thus, shock load to the internal gear is alleviated from the start.

Abstract: A starting apparatus includes a drive motor and a reduction gear having a planetary gear for starting an engine by the drive motor via the reduction gear. An internal gear of the reduction gear includes a locking projection projecting in an axial direction. A rotation restricting member is formed with a guide groove in which the locking projection is loosely received and guided in a circumferential direction. A shock absorbing member is held in the guide groove in a state of being elastically in close contact with the locking projection in the circumferential direction. Thus, shock load to the internal gear is alleviated from the start.