Provided are a control device and a control method for a vehicle, and storage medium which are capable of reducing vibration, noise, and speed change shock caused by a downshift when an increase in a required driving force is predicted during automated drive. In a control device (100) for a vehicle which is equipped with an automatic transmission (TM) and capable of automated driving control, when an increase in a required driving force is predicted during the execution of the automated driving control, a vehicle speed of the vehicle is maintained or decelerated until an increase timing of the required driving force, an engine rotation number is increased within a standby period until the increase timing of the required driving force, a torque of the engine is decreased in response to the increase in the engine rotation number, and a shift gear level of the automatic transmission is shifted downward.

Provided are a control device and a control method for a vehicle, and storage medium which are capable of reducing vibration, noise, and speed change shock caused by a downshift when an increase in a required driving force is predicted during automated drive. In a control device (100) for a vehicle which is equipped with an automatic transmission (TM) and capable of automated driving control, when an increase in a required driving force is predicted during the execution of the automated driving control, a vehicle speed of the vehicle is maintained or decelerated until an increase timing of the required driving force, an engine rotation number is increased within a standby period until the increase timing of the required driving force, a torque of the engine is decreased in response to the increase in the engine rotation number, and a shift gear level of the automatic transmission is shifted downward.

A control system for a work vehicle includes a power source with an engine and at least one motor configured to generate power; a transmission including a plurality of clutches configured for selective engagement to transfer the power to drive an output shaft of a powertrain of the work vehicle; and a controller coupled to the power source and the transmission. The controller has a processor and memory architecture configured to: initiate a transition for the transmission between a first transmission mode and a second transmission mode at a first shift point associated with an engine throttle shift function; determine a current engine speed; and generate and execute an engine speed command for the engine such that a commanded engine speed is a function of the current engine speed in accordance with the engine throttle shift function upon the transition of the transmission at the first shift point.

A control system for a work vehicle includes a power source with an engine and at least one motor configured to generate power; a transmission including a plurality of clutches configured for selective engagement to transfer the power to drive an output shaft of a powertrain of the work vehicle; and a controller coupled to the power source and the transmission. The controller has a processor and memory architecture configured to: initiate a transition for the transmission between a first transmission mode and a second transmission mode at a first shift point associated with an engine throttle shift function; determine a current engine speed; and generate and execute an engine speed command for the engine such that a commanded engine speed is a function of the current engine speed in accordance with the engine throttle shift function upon the transition of the transmission at the first shift point.

A method of controlling a continuously variable electric drivetrain (CVED) including a high ratio traction drive transmission and at least one of a first motor-generator and a second motor-generator is disclosed. The method includes the steps of receiving a output speed, determining a kinematic output speed, and determining a slip state of the high ratio traction drive transmission based on a comparison of the output speed to the kinematic output speed.

A method of controlling a continuously variable electric drivetrain (CVED) including a high ratio traction drive transmission and at least one of a first motor-generator and a second motor-generator is disclosed. The method includes the steps of receiving a output speed, determining a kinematic output speed, and determining a slip state of the high ratio traction drive transmission based on a comparison of the output speed to the kinematic output speed.

A transmission includes an input shaft and an output shaft, the input shaft selectively accepting a torque input from a prime mover, and the output shaft selectively providing torque output to a driveline. A controller determines a shaft displacement angle representing an angle value of rotational displacement difference between at least two shafts of the transmission, and performs a transmission operation responsive to the shaft displacement angle.

A transmission includes an input shaft and an output shaft, the input shaft selectively accepting a torque input from a prime mover, and the output shaft selectively providing torque output to a driveline. A controller determines a shaft displacement angle representing an angle value of rotational displacement difference between at least two shafts of the transmission, and performs a transmission operation responsive to the shaft displacement angle.

A method for operating a power shiftable transmission of a motor vehicle, the transmission including a control unit, an input shaft, an output shaft, a gear set, and multiple shift elements, the method including transmitting, with the control unit, a request for a reduction of a drive torque acting on the input shaft for carrying out an upshift, and determining, with the control unit, whether the reduction is completely possible, partially possible, or impossible based on a signal. When the reduction is completely possible, the method includes controlling, with the control unit, a torque transmission rate of a shift element of the multiple shift elements to be engaged during the upshift according to a first way. When the reduction is partially possible or impossible, the method includes controlling, with the control unit, the torque transmission rate according to a second way, the second way differing from the first way.

A controller for a hybrid vehicle predicts whether necessary discharging electric power from a power storage device which is required to perform downshift in a transmission exceeds upper-limit discharging electric power of the power storage device when downshift in the transmission is performed in a hybrid vehicle travel mode and controls a compressor rotation speed such that a rate of increase of the compressor rotation speed of a supercharger at the time of performing downshift in the transmission increases as the upper-limit discharging electric power decreases when it is predicted that the necessary discharging electric power exceeds the upper-limit discharging electric power.