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 control apparatus for controlling a linear solenoid by controlling a driving current supplied to the linear solenoid through a feedback control. The feedback control is executed by a feedback control system having parameters that are determined in accordance with an ILQ design method. In a frequency characteristic of a gain of a transfer function representing a ratio of an output to a disturbance in the feedback control system, the gain is lower than 0[dB] throughout all frequency ranges.

In a hydraulic control device and a hydraulic control method of a transmission, in a case that an oil supplying section is supplying a first oil to a continuously variable transmission mechanism, a TCU outputs, to an LC control valve of the oil supplying section, a control signal for giving a command to start supply of a second oil to a torque converter if a pulley pressure detected by a pressure sensor reaches a pressure threshold value.

In a hydraulic control device and a hydraulic control method of a transmission, in a case that an oil supplying section is supplying a first oil to a continuously variable transmission mechanism, a TCU outputs, to an LC control valve of the oil supplying section, a control signal for giving a command to start supply of a second oil to a torque converter if a pulley pressure detected by a pressure sensor reaches a pressure threshold value.

A control device of a vehicle has a drive source, a power transmission device having a plurality of rotating elements coupled via a gear and a plurality of friction engagement elements selectively coupling the plurality of rotating elements for transmitting an output of the drive source, and a lubricating device supplying a lubrication oil to the friction engagement elements for lubrication, the control device comprising: a lubrication control portion configured to increase an amount of the lubrication oil to the friction engagement elements from the lubricating device in a booming sound generating region predefined with respect to a drive source rotation speed.

A control device of a vehicle has a drive source, a power transmission device having a plurality of rotating elements coupled via a gear and a plurality of friction engagement elements selectively coupling the plurality of rotating elements for transmitting an output of the drive source, and a lubricating device supplying a lubrication oil to the friction engagement elements for lubrication, the control device comprising: a lubrication control portion configured to increase an amount of the lubrication oil to the friction engagement elements from the lubricating device in a booming sound generating region predefined with respect to a drive source rotation speed.

The present invention is a control device for an automatic transmission, the control device being adapted to control the automatic transmission including a torque converter and a stepped transmission mechanism provided on a power transmission route from the torque converter to drive wheels, wherein while a non-driving range of the automatic transmission is selected, determination on interlock in the stepped transmission mechanism is executed on the basis of deceleration of an output shaft of the stepped transmission mechanism and a change in the torque converter.

A slip control method and arrangement for a driveline including a continuously variable transmission is described herein. The driveline includes a hydraulic slip arrangement that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the hydraulic slip arrangement prevents the prime mover from stalling.

A slip control method and arrangement for a driveline including a continuously variable transmission is described herein. The driveline includes a hydraulic slip arrangement that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the hydraulic slip arrangement prevents the prime mover from stalling.

A control apparatus for a vehicle automatic transmission includes a downshift determining unit that determines whether downshift of a gear shift stage is to be performed based on at least one of a history of lateral accelerations and a history of variations of a vehicle speed. A lateral acceleration history acquiring unit or a vehicle speed variation history acquiring unit returns at least one of the history of the lateral accelerations and the history of the variations of the vehicle speed to an initial value when a shift control mode determined by a shift control mode determining unit is switched. At least one of the initial value of the history of the lateral accelerations and the initial value of the history of the variations of the vehicle speed is a value that is set for each shift control mode determined by the shift control mode determining unit.