초록 ▼

A control system for an automatic transmission includes a route information detector which detects route information for the vehicle and a transmission which is controlled by the route information detector. The control system also includes a device for detecting the places where it is necessary to d

A control system for an automatic transmission includes a route information detector which detects route information for the vehicle and a transmission which is controlled by the route information detector. The control system also includes a device for detecting the places where it is necessary to decrease speed in the determined traveling distance, a device for calculating the vehicle target speed for each corner, a device for calculating the required vehicle speed at the present position of the vehicle to decrease present vehicle speed to the vehicle target speed for the place where it is necessary to decrease speed. And if the target deceleration from the present speed to the required vehicle speeds lager than a threshold value, the place is regarded as the target place, and it is counted as the target place, and the automatic transmission is shifted down.

대표청구항 ▼

[ What is claimed is:] [1.] A control system for a transmission, which is controlled by a shift instruction based on a predetermined shift diagram and a route information detector which detects information on a route that a vehicle follows, comprising:a vehicle speed decreasing point detector which

[ What is claimed is:] [1.] A control system for a transmission, which is controlled by a shift instruction based on a predetermined shift diagram and a route information detector which detects information on a route that a vehicle follows, comprising:a vehicle speed decreasing point detector which detects a vehicle speed decreasing point on the route where it is necessary to decrease vehicle speed;a vehicle target speed calculator which calculates a vehicle target speed for the vehicle speed decreasing point;a target deceleration calculator which calculates a decrease speed to the vehicle target speed;a vehicle deceleration calculator which calculates a deceleration to make a present vehicle speed be the target speed;a deceleration judgment device which decides whether said deceleration is larger than a threshold value; anda transmission condition change device which changes a transmission condition to effect an engine braking condition when the deceleration judgment device decides that the deceleration is larger than the threshold value.