Shift control apparatus for an automatic transmission

A shift control apparatus, for an automatic transmission, that is used in a stepped automatic transmission that has a plurality of friction engagement elements that attain power transmission paths in a shift gear train mechanism by engagement states and in which a shift is carried out by clutching between friction engagement elements, and jump shift control is executed that performs a jump shift to a shift speed that is separated by two or more stages by one clutch action, the shift control apparatus comprising:

• a shift control means that, when it is determined that a next shift should occur during control for a former shift, executes multiple shift control in which the control for the former shift is suspended or control for the next shift is carried out in succession;
• load amount determining means that determines that a load amount applied to the friction engagement elements is within a permitted range when a reverse jump shift, that returns to a shift speed before the jump shift, has occurred during control of the jump shift;
• and
• multiple control permitting means that permits execution of multiple shift control for the reverse jump shift based on a determination of the load amount determining means;
• wherein,
• the shift control means executes the multiple shift control for the reverse jump shift when permitted by the multiple control permitting means when it is determined that the reverse jump shift should occur during the control of the jump shift;
• wherein the load amount determining means determines that the load amount is within the permitted range based on a shift progress rate.