Patent application number | Description | Published |
20100250037 | Hybrid drive device - A hybrid drive device includes a transfer torque estimation unit for estimating a transfer torque transferred by the lock-up clutch with the lock-up clutch slipping; and a target rotational speed determination unit for determining the target rotational speed of the rotary electric machine to be achieved in the rotational speed control on the basis of the transfer torque estimated by the transfer torque estimation unit, a target transmission device input torque of the transmission device determined on the basis of an operating state of a vehicle, and a turbine speed of the turbine runner, wherein the engine startup control device starts up the engine by controlling the rotational speed of the rotary electric machine to the target rotational speed determined by the target rotational speed determination unit. | 09-30-2010 |
20110245034 | CONTROL SYSTEM - A control system configured with a speed change mechanism. When starting combustion in an internal combustion engine under a combustion-stopped vehicle running condition, the combustion in the internal combustion engine is stopped, the speed change mechanism forms the one-way transmission speed, and the output member rotates. A rotational speed feedback control is executed that sets a value that multiplies a rotational speed of the output member by a speed ratio of the one-way transmission speed as a reference rotational speed of the input member, sets a starting rotational speed, and controls a rotary electric machine such that the rotational speed of the input member matches the target rotational speed. During execution of the rotational speed feedback control, a start control is performed that increases engagement pressure of the clutch to increase a rotational speed of the internal combustion engine and start combustion in the internal combustion engine. | 10-06-2011 |
20110246008 | CONTROL DEVICE - A control device controlling a hybrid vehicle drive apparatus that includes an internal combustion engine, a rotary electric machine drivingly connected to a wheel and a clutch selectively drivingly connecting the internal combustion engine with the rotary electric machine. The control device performs control such that, when a start request of the internal combustion engine is issued in the state in which the clutch is released and combustion of the internal combustion engine is stopped, a rotational speed of the internal combustion engine is raised to a rotational speed of the rotary electric machine by transmitting driving torque of the rotary electric machine to the internal combustion engine by increasing a torque transfer capacity of the clutch, and, after the rotational speed of the internal combustion engine is synchronized with the rotational speed of the rotary electric machine, the combustion of the internal combustion engine is started. | 10-06-2011 |
20120078456 | CONTROL DEVICE - A control device configured with a vibration reduction necessity determination section that determines whether or not a required drive operation point falls within a reduction necessary range, which is prescribed in advance as a range in which it is necessary to reduce torque vibration transferred from the internal combustion engine to the rotary electric machine. A cancellation control execution determination section that determines whether or not torque vibration cancellation control can be executed in the case where it is determined that the required drive operation point falls within the reduction necessary range. An execution control decision section that decides to execute the torque vibration cancellation control in the case where it is determined that the torque vibration cancellation control can be executed and that decides to execute operation point change control in the case where it is determined that the torque vibration cancellation control cannot be executed. | 03-29-2012 |
20120078457 | CONTROL DEVICE - A control device configured with a first control portion controls an engagement pressure of a first engagement device to make a rotational speed of the input member equal to a predetermined rotational speed during the specific electric power generation control. A second control portion controls an engagement pressure of the second engagement device in such a manner as to make a transfer torque capacity of the second engagement device equal to a predetermined transfer torque capacity during the specific electric power generation control. Another control portion determines a target rotational speed in such a manner as to maintain a state in which an electric power generation amount achieved by the rotating electrical machine coincides with a predetermined target electric power generation amount, in accordance with a magnitude of a differential torque as a difference between a torque transmitted via the first engagement device. | 03-29-2012 |
20120083978 | CONTROL DEVICE FOR AUTOMATIC TRANSMISSION - A control device for an automatic transmission configured with a command output portion that outputs a command that causes an electric pump to be driven so that oil pressure generated by the mechanical pump and the electric pump becomes greater than or equal to a needed oil pressure for a speed change mechanism when the oil pressure generated by the mechanical pump is smaller than the needed oil pressure. A determination portion determines whether or not a predetermined heat generation condition is met when the command is output by the command output portion. A shift control portion that, in a case where the determination portion has determined that the heat generation condition is met, performs a shift control of causing the speed ratio of the speed change mechanism to become higher than the speed ratio occurring when the determination portion determines that the heat generation condition is met. | 04-05-2012 |
20120232732 | CONTROL DEVICE - A control device controls an input coupled to a drive force source including a rotary electric machine and an internal combustion engine, an output coupled to wheels, and a speed change mechanism that transfers rotation of the input to the output with a speed of the rotation changed in accordance with a speed ratio of a shift speed selected from a plurality of shift speeds. When switching between the shift speeds, a rotation-varying torque value is calculated, the rotary electric machine outputs torque based on the rotation-varying torque value, and when an absolute value of the torque that the rotary electric machine outputs will become more than a predetermined threshold, both the rotary electric machine and the internal combustion engine are caused to output torque corresponding to the rotation-varying torque value such that the output torque of the rotary electric machine becomes equal to or less than the predetermined threshold. | 09-13-2012 |
20130012353 | CONTROL DEVICE - A control device that controls a vehicle drive device, including a rotary electric machine and internal combustion engine that drive wheels, a first friction engagement device and a second friction engagement device. The control device is configured to execute rotational state control in which a rotational state of the rotary electric machine is controlled so as to establish a target rotational state with the second friction engagement device in a slip engagement state, and hydraulic pressure regulation control in which a hydraulic pressure supplied to the second friction engagement device is controlled on the basis of torque of the rotary electric machine produced during the rotational state control after the first friction engagement device is transitioned to a direct engagement state while the second friction engagement device is transitioned from the slip engagement state to a direct engagement state. | 01-10-2013 |