A control device that controls a vehicle drive device in which an engagement device, a rotating electrical machine, and an automatic transmission are arranged in this order from an input side on a power transmission path connecting an input drivingly coupled to an internal combustion engine and an output drivingly coupled to a wheel, the control device including: an electronic control unit configured to operate when starting of the internal combustion engine and downshifting are performed in parallel in a state in which the internal combustion engine is stopped and the engagement device is disengaged so that torque of the rotating electrical machine is transmitted to the wheel.

A shift control device for a vehicle includes: an engine; a shift mechanism disposed between the engine and driving wheels; a shift control section configured to control a transmission gear ratio of the shift mechanism; and a fuel cut control section configured to stop a fuel supply to the engine, at least when an accelerator pedal is in a release state, and when an engine speed is equal to or greater than a predetermined rotation speed, the shift control section being configured to perform a minimum rotation speed restriction control to control the transmission gear ratio of the shift mechanism so that the minimum rotation speed of the engine is equal to or greater than the predetermined rotation speed regardless of a vehicle front condition and an accelerator operation condition.

A method for controlling a shift-by-wire (SBW) transmission may include detecting whether a shut-down condition is met in a state in which a parking gear stage of a vehicle is released, when it is detected that the shut-down condition is met, starting to drive a parking release device of maintaining release of a parking gear on the basis of an oil pressure of a parking piston or an RPM of an engine, and controlling an ON/OFF duty ratio of electric power of driving the parking release device on the basis of oil pressure of the parking piston, after starting to drive the parking release device.

A control device for a vehicle controlling the vehicle including a driving source and an automatic transmission coupled to the driving source and includes a power transmission mechanism including a forward engaging element. The control device for the vehicle includes a first control unit configured to execute a driving-source-stop-while-traveling control that stops the driving source and brings the automatic transmission into a neutral state when a driving-source-stop-while-traveling condition for stopping the driving source while traveling is satisfied and a second control unit configured to engage the forward engaging element on the basis of input and output rotation speeds of the power transmission mechanism after a driving-source-stop-while-traveling cancellation condition is satisfied.

A hydraulic control system of an automatic transmission for a vehicle provided with an ISG system is disclosed. The hydraulic control system may include: a mechanical hydraulic pump driven by an engine; a linear solenoid valve to control hydraulic pressure generated by the mechanical hydraulic pump; a first switch valve to selectively supply or not to supply controlled hydraulic pressure to one of friction members; an electric hydraulic pump driven by electric energy; and a second switch valve to selectively supply the hydraulic pressure, generated by the electric hydraulic pump, to the one friction member or to the linear solenoid valve. The hydraulic control system supplies the hydraulic pressure to one of the friction members operated at a gear stage where starting control is performed.

In a control unit of a hydraulic control device, a workload calculation unit calculates the amount of workload cut in a first pump when supply of first oil from the first pump to a continuously variable transmission mechanism through a check valve is switched to supply of second oil from a second pump to the continuously variable transmission mechanism. A workload determination unit determines whether the amount of workload loss of an ACG is more than the amount of workload cut. A motor controller stops a motor or decreases a rotation number if the workload determination unit determines that the amount of workload loss is more than the amount of workload cut.

Provided is a control device for a vehicle including a first oil pump that is driven by a first drive source driving a drive wheel of a vehicle and configured to supply oil to a hydraulic pressure actuation machine, and a second oil pump that is driven by a second drive source different from the first drive source and configured to supply oil to the hydraulic pressure actuation machine. The control device drives the second oil pump when a start switch of the vehicle is turned on and the first drive source is started for the first time, and drives the second oil pump when the second oil pump is not driven for a first predetermined time after the first drive source is started, and a rotation speed of the second oil pump when the first drive source is started is lower than a rotation speed of the second oil pump after the first drive source is started.

A method for operating a powertrain, having at least one drive motor and at least one gearbox, of a motor vehicle which can be driven by the drive motor, via the gearbox, in which heat is transferred from the drive motor to the gearbox in a targeted manner, as a result of which the gearbox is heated in a targeted manner. The heat is transferred from the drive motor to the gearbox in a targeted manner on the basis of predictive data which include at least one future state of the motor vehicle.

A drive control system of a vehicle includes a vehicle speed module configured to determine whether the vehicle is moving and set a state of a signal based on the determination. A shift control module is configured to shift a transmission of the vehicle based on a signal from a range selector. Independently of the signal from the range selector, the shift control module is configured to selectively shift the transmission of the vehicle based on a signal from a combination park and ignition switch and the signal from the vehicle speed module. An ignition control module is configured to selectively shut down an engine of the vehicle based on the signal from the combination park and ignition switch and the signal from the vehicle speed module.

A hydraulic control device and hydraulic control method of a transmission are provided. The hydraulic control device of a transmission, which includes a forward clutch engaged in a Drive range, a reverse brake engaged in a Reverse range, and a switching valve that is able to selectively switch supply of a hydraulic pressure to the forward clutch and the reverse brake, wherein the hydraulic control device receives a shift position of a vehicle on which the transmission is mounted and idling stop information. When the range is switched to the Reverse range from the Drive range during idling stop, and the switching valve is positioned at a position at which a hydraulic pressure is able to be supplied to the reverse brake, rotational speed increase control with a rotational speed of an electric oil pump higher than a normal rotational speed is performed.