Patent ID: 6325742
Filing Date: 2001-12-04
Classification: F16H,Y10T

Abstract:
A shift control system for an automatic transmission in a vehicle, comprising:a plurality of sensors each sensing a vehicle operating condition;a transmission control unit controlling shift control solenoids and a pressure control solenoid in a hydraulic control system for said automatic transmission based on said sensed vehicle operating conditions, said shift control solenoids controlling operation of friction elements in said automatic transmission, said pressure control solenoid controlling hydraulic pressure in said automatic transmission supplied to said friction elements, said friction elements including a front clutch, a rear clutch, an end clutch and a kick-down band brake; andsaid transmission control unit detecting a change in driving mode from a reverse mode to a drive mode based on said sensed vehicle operating conditions, and controlling said shift control solenoids such that said automatic transmission shifts into only a first speed stage in said drive mode when said transmission control unit detects said change in said driving mode from said reverse mode to said drive mode.