Control apparatus method for automatic transmission

A control apparatus for an automatic transmission, comprising:

• an engine;
• an pump driven by the engine;
• clutch means for transmitting propelling power of a vehicle, the clutch means being adapted to be engaged by an engagement pressure produced by the pump at a start time of the vehicle;
• idle stop control means for
• deactivating the engine when the vehicle is in a stopped state and a predetermined condition is satisfied, and
• restarting the engine when the predetermined condition becomes not to be satisfied;
• and
• engagement-pressure control means for
• controlling the engagement pressure while the clutch means shifts from in a disengaged state to in an engaged state, and
• carrying out a learning control to correct the engagement pressure of the clutch means in accordance with a state of a creep start of the vehicle, when the idle stop control means restarts the engine.

A control method for an automatic transmission adapted to be connected to an engine through a starting clutch, the starting clutch being adapted to be engaged by an engagement pressure to transmit propelling power of a vehicle, the control method comprising:

• deactivating the engine when the vehicle is in a stopped state and a predetermined condition is satisfied;
• restarting the engine when the predetermined condition becomes not to be satisfied;
• and
• carrying out a learning control to correct the engagement pressure of the starting clutch in accordance with a state of a creep start of the vehicle by controlling the engagement pressure while the starting clutch shifts from in a disengaged state to in an engaged state, when the engine is restarted.