Patent ID: 11892077
Assignee: MAZDA MOTOR CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC F

Claim 0:
1. A vehicle gear-shifting control apparatus, comprising:
an engine which is mounted to a vehicle and which generates a travel drive force of the vehicle;
a hydraulically controlled automatic transmission which has an input shaft connected to the engine and an output shaft connected to a drive wheel of the vehicle and which subjects an input rotation to gear-shifting at a transmission gear ratio corresponding to a selected shift stage and outputs the gear-shifted input rotation; and
a controller which changes the shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with a rotation speed of the input shaft to the automatic transmission, wherein
the controller executes a torque-regulating control in which, during a shift-change of the shift stage, an input torque input to the input shaft is temporarily increased or decreased as compared to during a non-shift-change, and
when executing the torque-regulating control, the controller is configured to:
determine whether or not a target increase/decrease amount of the input torque can be realized under a present state of the engine based on calculation results according to the shift stage of a target value of an output torque which is output from the output shaft and a target value of a gear-shifting time which is required for the shift-change,
execute the torque-regulating control so as to realize the target increase/decrease amount when it is determined that the target increase/decrease amount can be realized, and
execute the torque-regulating control based on an allowable gear-shifting time set in advance to be longer than the target value of the gear-shifting time instead of based on the target value when it is determined that the target increase/decrease amount cannot be realized.