Patent ID: 6394929
Filing Date: 2002-05-28
Classification: B60W,F16H,Y10T

Abstract:
A shift control apparatus for controlling an automatic transmission, comprising:a transmission including a synchro mechanism having at least one set of sleeve and a pair of free-rotate gears relatively rotatable on a rotate shaft; a clutch disposed between said transmission and an engine; a first drive means for operating said clutch; a second drive means for operating the synchro mechanism of said transmission; a third drive means for varying the number of rotation of the engine; and a control unit for controlling said first drive means, said second drive means and said third drive means based on a speed-change signal in a speed-change of said transmission, said control unit including (1) a clutch control portion to control said first drive means so that said transmission is separated from the engine, then temporarily connected to the engine and then separated from the engine, (2) a synchro control portion to drive said second drive means so that the synchro mechanism of said transmission is shifted-fall when said transmission is firstly separated from the engine, and is shifted push-in when said transmission is secondary separated from the engine, and (3) an engine control portion to control said third drive means so that the numbers of rotation of the engine is increased when the synchro mechanism is shifted fall and said transmission is temporarily connected with the engine.