Automatic transmission control device

摘要

A control apparatus for an automatic transmission is provided with an automatic gearshift mode and a manual gearshift mode. The control apparatus changes a gearshift characteristic of the automatic transmission in response to a situation where an accelerator pedal opening is smaller than a predetermined opening, so that downshifting occurs at higher vehicle speed than in a situation where the accelerator pedal opening is greater than or equal to the predetermined opening. While the manual gearshift mode is being selected, the control apparatus inhibits change of the gearshift characteristic until downshifting is performed once, and permits change of the gearshift characteristic after downshifting is performed once.

主权项

1. An automatic transmission control apparatus provided with an automatic gearshift mode and a manual gearshift mode, wherein:
when in the automatic gearshift mode, the automatic transmission control apparatus performs gearshifting automatically based on a relationship between an automatic gearshift line and an operating point, wherein the automatic gearshift line is defined with respect to vehicle speed, and wherein the operating point is determined by a sensed vehicle speed; when in the manual gearshift mode, the automatic transmission control apparatus performs gearshifting based on a manual operation of a driver and a relationship between a manual gearshift line and the sensed vehicle speed, and rejects an upshift operation of the driver in a situation where the sensed vehicle speed is lower than or equal to a predetermined vehicle speed, wherein the manual gearshift line is defined with respect to vehicle speed; and the automatic transmission control apparatus comprises
a gearshift characteristic change section that changes a gearshift characteristic of an automatic transmission in response to a situation where an accelerator pedal opening is smaller than a predetermined opening, so that downshifting occurs at a higher vehicle speed than in a situation where the accelerator pedal opening is greater than or equal to the predetermined opening; anda gearshift characteristic change inhibition/permission section, wherein while the manual gearshift mode is being selected, the gearshift characteristic change inhibition/permission section inhibits change of the gearshift characteristic until downshifting is performed once, and permits change of the gearshift characteristic after downshifting is performed once.