Patent ID: 6217477
Filing Date: 2001-04-17
Classification: B60W,F16H,Y10T

Abstract:
An automatic transmission control system for controlling a gear ratio of an automatic transmission connected to an engine so as to bring an engine speed of rotation to a target speed of rotation predetermined according to a vehicle speed and a throttle opening of the engine, said control system comprising:an engine speed sensor for detecting an engine speed of rotation of the engine;throttle opening sensor for detecting a throttle opening of an throttle of the engine;a vehicle speed sensor for detecting a vehicle speed; andcontrol means for interrupting delivery of fuel to the engine while said engine speed of rotation is higher than a specified speed of rotation and said throttle opening is less than a specified opening, increasing said target engine speed of rotation while said throttle opening is less than said specified opening to increase said gear ratio and, when said throttle opening sensor detects a throttle opening increased above said specified opening after having once been decreased below said specified opening, said control means controls said gear ratio according to said increased target engine speed of rotation until a target engine speed of rotation set according to a vehicle speed and a throttle opening becomes over said increased target engine speed of rotation.