Abstract: A control device of a hybrid vehicle includes a pressing torque applying portion configured to control the first rotating machine to output a pressing torque acting in a predetermined backlash elimination direction in backlash elimination in which one of tooth surfaces of meshing gears is pressed against the other at a meshing portion during motor running, so that the pressing torque is applied on the electric transmission mechanism. When an electrical angle of the first rotating machine is within a predetermined electrical angle range in which a cogging torque of the first rotating machine generated in accordance with rotation of the first rotating machine is equal to or greater than a predetermined torque required for the backlash elimination in the predetermined backlash elimination direction, the pressing torque applying portion makes the pressing torque smaller as compared to when the electrical angle is outside the predetermined electrical angle range.

Abstract: A vehicle control device for a vehicle, the vehicle including a rotation lock mechanism preventing rotation of a coupling portion on the engine side of the rotating member in at least one direction, and an engine rotation speed sensor detecting a rotation speed of the engine, includes: a characteristic detecting portion detecting at least a torsional rigidity as the rotational characteristic by applying a torque to the rotating member from the electric motor to measure a twist angle of the rotating member while the rotation of the coupling portion is prevented by the rotation lock mechanism; and an engine rotation filtering portion calculating an actual resonance frequency based on the torsional rigidity detected by the characteristic detecting portion and filtering an engine rotation speed signal supplied from the engine rotation speed sensor to attenuate a vibration component of the actual resonance frequency in the engine rotation speed signal.

Abstract: A vehicle control device for a vehicle provides a predetermined control based on the rotational characteristic, the vehicle including a rotation lock mechanism preventing rotation of a coupling portion of the rotating member coupled to the engine on the engine side of the rotating member in at least one direction, the vehicle control device comprising: a characteristic detecting portion detecting the rotational characteristic by applying a torque to the rotating member from the electric motor to measure a twist angle of the rotating member while the rotation of the coupling portion is prevented by the rotation lock mechanism; and a characteristic correspondence control portion setting a control value related to an engine rotation speed based on the rotational characteristic detected by the characteristic detecting portion to provide the predetermined control by using the control value.

Abstract: A control device of a hybrid vehicle includes a pressing torque applying portion configured to control the first rotating machine to output a pressing torque acting in a predetermined backlash elimination direction in backlash elimination in which one of tooth surfaces of meshing gears is pressed against the other at a meshing portion during motor running, so that the pressing torque is applied on the electric transmission mechanism. When an electrical angle of the first rotating machine is within a predetermined electrical angle range in which a cogging torque of the first rotating machine generated in accordance with rotation of the first rotating machine is equal to or greater than a predetermined torque required for the backlash elimination in the predetermined backlash elimination direction, the pressing torque applying portion makes the pressing torque smaller as compared to when the electrical angle is outside the predetermined electrical angle range.

Abstract: Provided is a transmission system including: a gear shaft that receives a force acting in a direction perpendicular to a rotational centerline; a rotor shaft that is rotatably supported at both ends on the same rotational centerline as the gear shaft, spline-fitted with the gear shaft, and coupled to a rotor of an electric motor; and an elastic member that is press-fitted between an inner circumferential surface and an outer circumferential surface of the gear shaft and the rotor shaft that face each other in a radial direction centered at the rotational centerline. An amount of compression of the rubber member as the elastic member in the radial direction increases from a press-fitting start position toward a press-fitting end position located respectively on a leading end side and a base end side at one end of the rotor shaft.

Abstract: In a control device of a hybrid vehicle including an engine and an electric motor serving as drive power sources and a damper device disposed between the engine and the electric motor and having rotational characteristics related to an input torque, the control device comprises: a damper rotational characteristic detecting portion configured to measure a rotational characteristic value of the damper device by allowing the electric motor to input a torque to the damper device while rotation of a crankshaft of the engine is stopped; and an output torque correction control portion configured to control an output torque of the engine or the electric motor to suppress occurrence of vibration based on a difference between the rotational characteristic value of the damper device detected by the damper rotational characteristic detecting portion and a preset initial setting value of the rotational characteristic value of the damper device.

Abstract: A power transmission device includes a rotor shaft, a gear shaft, and a rattling suppression member. The rattling suppression member is provided between a first shaft end portion and the gear shaft or between a second shaft end portion and the rotor shaft. The first shaft end portion is a portion, protruding to the gear shaft side from one of a pair of first bearings, of the rotor shaft, while the second shaft end portion is a portion, protruding to the rotor shaft side from one of a pair of second bearings, of the gear shaft.

Abstract: In a control device of a hybrid vehicle including an engine and an electric motor serving as drive power sources and a damper device disposed between the engine and the electric motor and having rotational characteristics related to an input torque, the control device comprises: a damper rotational characteristic detecting portion configured to measure a rotational characteristic value of the damper device by allowing the electric motor to input a torque to the damper device while rotation of a crankshaft of the engine is stopped; and an output torque correction control portion configured to control an output torque of the engine or the electric motor to suppress occurrence of vibration based on a difference between the rotational characteristic value of the damper device detected by the damper rotational characteristic detecting portion and a preset initial setting value of the rotational characteristic value of the damper device.

Abstract: A vehicle control device for a vehicle, the vehicle including a rotation lock mechanism preventing rotation of a coupling portion on the engine side of the rotating member in at least one direction, and an engine rotation speed sensor detecting a rotation speed of the engine, includes: a characteristic detecting portion detecting at least a torsional rigidity as the rotational characteristic by applying a torque to the rotating member from the electric motor to measure a twist angle of the rotating member while the rotation of the coupling portion is prevented by the rotation lock mechanism; and an engine rotation filtering portion calculating an actual resonance frequency based on the torsional rigidity detected by the characteristic detecting portion and filtering an engine rotation speed signal supplied from the engine rotation speed sensor to attenuate a vibration component of the actual resonance frequency in the engine rotation speed signal.

Abstract: A vehicle control device for a vehicle provides a predetermined control based on the rotational characteristic, the vehicle including a rotation lock mechanism preventing rotation of a coupling portion of the rotating member coupled to the engine on the engine side of the rotating member in at least one direction, the vehicle control device comprising: a characteristic detecting portion detecting the rotational characteristic by applying a torque to the rotating member from the electric motor to measure a twist angle of the rotating member while the rotation of the coupling portion is prevented by the rotation lock mechanism; and a characteristic correspondence control portion setting a control value related to an engine rotation speed based on the rotational characteristic detected by the characteristic detecting portion to provide the predetermined control by using the control value.

Abstract: A support structure for rotating shafts of a vehicle, including: a drive shaft operatively connected to a power transmitting shaft to which a drive force of an engine is transmitted; and a rotor shaft of an electric motor spline-coupled to the drive shaft, each of the rotor shaft of the electric motor and the drive shaft is being supported by at least one bearing, in the support structure, one of the rotor shaft and the drive shaft is constituted by a first rotary shaft and a second rotary shaft which are operatively connected to each other, and an elastic member is interposed between the first rotary shaft and the second rotary shaft such that the first and second rotary shafts are operatively spline-connected to each other through the elastic member.

Abstract: An engine and a motor are arranged on different rotational axes. A driven gear shaft is arranged to rotate about the rotational axis shared with a rotor shaft of the motor. The driven gear shaft is connected to the rotor shaft of the motor for power transmission. The rotor shaft is rotatably supported by a first bearing. The rotor shaft and the driven gear shaft are formed of different shafts. The driven gear shaft is configured to extend in a shaft direction toward the rotor shaft side. A second bearing is arranged in an extended portion. The output shaft is arranged to rotate about the rotational axis shared with the rotor shaft of the motor. The output shaft is connected to the rotor shaft for power transmission. The output shaft is connected to a drive wheel for power transmission.

Abstract: A support structure for rotating shafts of a vehicle, including: a drive shaft operatively connected to a power transmitting shaft to which a drive force of an engine is transmitted; and a rotor shaft of an electric motor spline-coupled to the drive shaft, each of the rotor shaft of the electric motor and the drive shaft is being supported by at least one bearing, in the support structure, one of the rotor shaft and the drive shaft is constituted by a first rotary shaft and a second rotary shaft which are operatively connected to each other, and an elastic member is interposed between the first rotary shaft and the second rotary shaft such that the first and second rotary shafts are operatively spline-connected to each other through the elastic member.

Abstract: A power transmission structure of a vehicle, which is provided with a first rotor, a second rotor, and a metallic cylinder. In this power transmission structure, the reduction shaft and the second rotor shaft receive reaction force from the cylindrical metallic member in radially opposite directions. The cylindrical metallic member is deformable elastically in a radial direction and press-fitted in a part where the reduction shaft and the second rotor shaft of a second electric motor overlap each other in the radial direction adjacent to a spline fitting part of the reduction shaft and the second rotor shaft. Therefore, misalignment between the axis of the reduction shaft and the axis of the second rotor shaft is restrained, and generation of tooth hitting sound is thus restrained. Since the cylindrical metallic member has high rigidity and is restrained from being deformed in a rotation direction, responsiveness of torque transmission is improved.

Abstract: A drive control device for a hybrid vehicle is provided with a differential device including four rotary elements; and an engine, first and second electric motors and an output rotary member which are respectively connected to the four rotary elements. One of the four rotary elements is constituted by a rotary component of a first differential mechanism and a rotary component of a second differential mechanism selectively connected through a clutch, and one of the rotary components is selectively fixed to a stationary member through a brake. The hybrid vehicle is selectively placed in a plurality of drive modes according to respective combinations of engaged and released states of the clutch and the brake.

Abstract: A power transmission device includes a rotor shaft, a gear shaft, and a rattling suppression member. The rattling suppression member is provided between a first shaft end portion and the gear shaft or between a second shaft end portion and the rotor shaft. The first shaft end portion is a portion, protruding to the gear shaft side from one of a pair of first bearings, of the rotor shaft, while the second shaft end portion is a portion, protruding to the rotor shaft side from one of a pair of second bearings, of the gear shaft.

Abstract: A control apparatus for a vehicle including: an internal combustion engine that generates a driving force; and a motor connected to the internal combustion engine via an elastic body to allow torque transmission, wherein the control apparatus performs a specific control that controls a rotational speed of the internal combustion engine by a generated torque of the motor, and the control apparatus performs a control so that, even when the strength of the generated torque accompanied with releasing elastic energy accumulated in the elastic body in the specific control is required to be changed, the strength is not changed when an absolute value of a torque change ratio which is the amount of change per unit time is larger than a predetermined change ratio threshold and an absolute value of the elastic energy is larger than a predetermined elastic energy threshold.

Abstract: An engine (12) and a motor (MG2) are arranged on different rotational axes (C1, C3). A driven gear shaft (28) is arranged to rotate about the rotational axis (C3) shared with a rotor shaft (30) of the motor (MG2). The driven gear shaft (28) is connected to the rotor shaft (30) of the motor for power transmission. The rotor shaft (30) is rotatably supported by a first bearing. The rotor shaft (30) and the driven gear shaft (28) are formed of different shafts. The driven gear shaft (28) is configured to extend in a shaft direction toward the rotor shaft side. A first bearing (64) is configured to support the rotor shaft (30) to allow rotation of the rotor shaft (30). A second bearing (54, 56) is arranged in a portion on the rotor shaft side of the driven gear shaft (28). A driven gear (24) is provided on the driven gear shaft (30) whereby power from the engine is transmitted to the driven gear (24).

Abstract: A power transmission structure of a vehicle, which is provided with a first rotor, a second rotor, and a metallic cylinder. In this power transmission structure, the reduction shaft and the second rotor shaft receive reaction force from the cylindrical metallic member in radially opposite directions. The cylindrical metallic member is deformable elastically in a radial direction and press-fitted in a part where the reduction shaft and the second rotor shaft of a second electric motor overlap each other in the radial direction adjacent to a spline fitting part of the reduction shaft and the second rotor shaft. Therefore, misalignment between the axis of the reduction shaft and the axis of the second rotor shaft is restrained, and generation of tooth hitting sound is thus restrained. Since the cylindrical metallic member has high rigidity and is restrained from being deformed in a rotation direction, responsiveness of torque transmission is improved.

Abstract: A control apparatus for a vehicle including: an internal combustion engine that generates a driving force; and a motor connected to the internal combustion engine via an elastic body to allow torque transmission, wherein the control apparatus performs a specific control that controls a rotational speed of the internal combustion engine by a generated torque of the motor, and the control apparatus performs a control so that, even when the strength of the generated torque accompanied with releasing elastic energy accumulated in the elastic body in the specific control is required to be changed, the strength is not changed when an absolute value of a torque change ratio which is the amount of change per unit time is larger than a predetermined change ratio threshold and an absolute value of the elastic energy is larger than a predetermined elastic energy threshold.