US 6,019,701 A · Shift control apparatus for continuously variable transmission

Abstract

A shift control apparatus of a continuously variable transmission for a vehicle comprises sensors for detecting operating conditions of the transmission and a motor connected to the transmission. A controller of the shift control apparatus stores different shift maps and employs one of them according to a driver's command or vehicle driving condition. The controller decides a target value of an input rotation speed of the transmission from an output rotation speed of the transmission and the load condition of a motor on the basis of the shift map and continuously changes a gear ratio of the transmission so that the transmission input rotation speed is adjusted to the target value. The controller can change the rate of the shift speed according to a driver's command.

Claims16

Dependent claims

A shift control apparatus of a continuously variable transmission, comprising:

shift map storing means for storing a shift map;
input target value deciding means for deciding a target value of an input rotation speed of the transmission from an output rotation speed of the transmission and the load condition of a motor on the basis of said shift map;
gear ratio changing means for changing means for continuously changing a gear ratio of the continuously variable transmission so that the transmission input rotation speed is adjusted to the target value;
and
shift speed changing means for changing a rate of change of the transmission input rotation speed according to a driver's command.

2 more elements

Dependencies are inferred from the claim text.

Shift control apparatus for continuously variable transmission

Life of this patent

Shift control apparatus for continuously variable transmission

Life of this patent

Abstract

Claims16