JP2006327552A5 - - Google Patents

Claims (21)

It has a differential mechanism that distributes engine output to the first motor and the transmission member, and a second motor provided in the power transmission path from the transmission member to the drive wheels, and can operate as an electric continuously variable transmission. A control device for a vehicle drive device having a continuously variable transmission,
A differential limiting device provided in the differential mechanism for limiting the operation of the continuously variable transmission as an electrical continuously variable transmission by limiting the differential action of the differential mechanism;
When limiting the operation of the continuously variable transmission unit as an electric continuously variable transmission while the engine is traveling using the engine as a driving force source, the difference in changing the half transmission capacity state of the differential limiting device and motion limiting means, seen including,
The differential limiting device is an engagement device;
The differential limiting means limits the half-engaged state of the engagement device in order to reduce the reaction force exerted by the first motor, thereby causing the second motor to change from the first motor to the continuously variable transmission unit. A control device for a vehicle drive device , wherein the ratio between the output electrically transmitted to the transmission and the output mechanically transmitted to the transmission member in the continuously variable transmission is changed . It has a differential mechanism that distributes engine output to the first motor and the transmission member, and a second motor provided in the power transmission path from the transmission member to the drive wheels, and can operate as an electrical differential device. A control device for a vehicle drive device including a differential unit,
A differential limiting device provided in the differential mechanism for limiting the operation of the differential section as an electrical differential device by limiting the differential action of the differential mechanism;
When limiting the operation of the differential unit as an electrical differential device while the engine is running with the engine as a driving force source, a differential limit that changes a half transmission capacity state of the differential limiter and means, only including,
The differential limiting device is an engagement device;
The differential limiting means restricts a half-engaged state of the engagement device to reduce a reaction force of the first motor, thereby causing electric power from the first motor to the second motor in the differential section. A control device for a vehicular drive device, characterized in that the ratio between the output that is transmitted and the output that is mechanically transmitted to the transmission member in the differential section is changed . A differential unit that has an electric motor and a differential mechanism, and that can operate as an electric differential device when the electric motor generates a reaction torque corresponding to an output torque of the engine input to the differential mechanism. A control device for a vehicle drive device comprising:
An engagement device that is provided in the differential mechanism and restricts the operation of the differential section as an electrical differential device by limiting the differential action of the differential mechanism;
When the operation of the differential unit as an electric differential device is restricted while the engine is running using the engine as a driving force source, a half of the engagement device is used to reduce the reaction force of the motor. Differential limiting means for controlling an engagement state and generating a reaction torque corresponding to the output torque of the engine by using both the torque generated by the electric motor and the half-engagement torque of the engagement device. A control device for a vehicle drive device. The differential limiting means serves as an electrical differential device of the differential unit when an output torque of the engine that is equal to or greater than a reaction torque that can be independently generated by the electric motor is input to the differential mechanism. 4. The control device for a vehicle drive device according to claim 3 , wherein the operation is limited. It said differential limiting means during engine start to start the engine as a drive power source, the differential portion of an electrical differential restricts the operation of the apparatus according to claim 3 or 4 of the vehicle drive device Control device. On the basis of the reaction torque by the electric motor and engaging device in the semi-engagement state of the engagement device, any one of claims 3 to 5 which further contains an engine torque limiting means for limiting the output torque of the engine 1 is a control device for a vehicle drive device.   The vehicle drive device control device according to claim 1, further comprising a stepped transmission unit disposed at a stage subsequent to the continuously variable transmission unit on the power transmission path.   Furthermore, the control apparatus of the vehicle drive device of Claim 2 containing the stepped transmission part arrange | positioned in the back | latter stage rather than the said differential part on the said power transmission path | route.   4. The control device for a vehicle drive device according to claim 3, further comprising a stepped transmission portion arranged at a stage subsequent to the differential portion on a power transmission path from the transmission member to the drive wheel. 8. The control device for a vehicle drive device according to claim 7, wherein the differential limiting means also serves as switching control means for switching the continuously variable transmission portion to a stepped transmission state or a continuously variable transmission state.   9. The control device for a vehicle drive device according to claim 8, wherein the differential limiting means also serves as switching control means for switching the differential portion between a differential state and a non-differential state.   10. The control device for a vehicle drive device according to claim 9, wherein the differential limiting means also serves as switching control means for switching the differential portion between a differential state and a non-differential state.   11. The control device for a vehicle drive device according to claim 10, wherein the differential limiting means places the engagement device in a semi-engagement state when the continuously variable transmission portion cannot be switched to a continuously variable transmission state or a non-continuously variable transmission state. .   12. The control device for a vehicle drive device according to claim 11, wherein the differential limiting means places the engagement device in a semi-engagement state when the differential portion cannot be switched to a differential state or a non-differential state.   13. The control device for a vehicle drive device according to claim 12, wherein the differential limiting means places the engagement device in a semi-engaged state when the differential unit cannot be switched to a differential state or a non-differential speed change state.   Furthermore, a driving force source determination unit that determines whether torque is input from the engine to the continuously variable transmission unit, and a reaction force torque that can be generated in the first motor by the input torque to the continuously variable transmission unit. And a reaction force range determination means for determining whether or not the torque is within the range, and when the input torque to the continuously variable transmission unit is determined to be outside the range of the reaction force torque in the first electric motor, 14. The control device for a vehicle drive device according to claim 1 or 13, comprising input torque limiting means for limiting the input torque.   Further, a driving force source determining means for determining whether torque is input from the engine to the differential unit, and a reaction force torque range in which the input torque to the differential unit can be generated in the first electric motor A reaction force range determining means for determining whether or not the torque is within the range, and when the input torque to the differential unit is determined to be outside the range of the reaction force torque in the first motor, the input torque to the differential unit is limited The vehicle drive device control device according to claim 2 or 14, further comprising:   Further, a driving force source determining means for determining whether torque is input from the engine to the differential unit, and a reaction force torque range in which the input torque to the differential unit can be generated in the first electric motor A reaction force range determining means for determining whether or not the torque is within the range, and when the input torque to the differential unit is determined to be outside the range of the reaction force torque in the first motor, the input torque to the differential unit is limited The vehicle drive device control device according to claim 3 or 15, further comprising: an input torque limiting means.   The control device for a vehicle drive device according to claim 16, further comprising a shift control means for operating the second electric motor in order to compensate for a driving force that is insufficient due to a restriction of input torque to the continuously variable transmission.   The vehicle drive device control device according to claim 17, further comprising shift control means for operating the second electric motor in order to compensate for a drive force that is insufficient due to a restriction of an input torque to the differential unit.   The vehicle drive device control device according to claim 18, further comprising a shift control means for operating the second electric motor in order to compensate for a drive force that is insufficient due to a restriction on an input torque to the differential unit.