Control apparatus for vehicle and method of controlling vehicle

A method of controlling a vehicle that includes a power source, and an automatic transmission, connected to the power source, in which a gear is selected from among a plurality of gears with different gear ratios by selectively engaging a plurality of friction engagement elements, wherein the method boosts torque output from the power source during a torque phase when the automatic transmission upshifts, the method comprising:

• controlling an engagement pressure for a friction engagement element to be engaged when the automatic transmission upshifts so that the engagement pressure increases to a predetermined pressure during the torque phase, and the engagement pressure increases from the predetermined pressure at a predetermined gradient when an inertia phase starts;
• determining whether torque boost has been restricted during the torque phase;
• and
• when it is determined that the torque boost has not been restricted, setting the predetermined pressure to a greater value, and setting the predetermined gradient to a smaller value than when it is determined that the torque boost has been restricted.

A control apparatus for a vehicle that includes a power source, and an automatic transmission, connected to the power source, in which a gear is selected from among a plurality of gears with different gear ratios by selectively engaging a plurality of friction engagement elements, wherein the control apparatus boosts torque output from the power source during a torque phase when the automatic transmission upshifts, the control apparatus comprising:

• means for controlling an engagement pressure for a friction engagement element to be engaged when the automatic transmission upshifts so that the engagement pressure increases to a predetermined pressure during a torque phase, and the engagement pressure increases from the predetermined pressure at a predetermined gradient when an inertia phase starts;
• means for determining whether torque boost has been restricted during the torque phase;
• and
• means for, when it is determined that the torque boost has not been restricted, setting the predetermined pressure to a greater value, and setting the predetermined gradient to a smaller value than when it is determined that the torque boost has been restricted.