Patent ID: 6164149
Filing Date: 2000-12-26
Classification: F16H,Y10T

Abstract:
A shifting device for a synchromesh-type transmission, comprising:detecting means for detecting a rotation change rate of an input shaft;judging means for judging a balk point based on the rotation change rate of the input shaft detected by said detecting means; anda transmission controlling mechanism including a driving means electric-controlled for driving a shift actuator to shift the shift fork, the driving means controlling a drive current to the shift actuator when the balk point is detected by said balk point judging means, wherein the driving means of said transmission controlling mechanism maps a shifting load corresponding to a predetermined necessary time period based on a relation between the shifting load and a necessary time period up to a completion of synchronization for each of up-shift and down-shift, and controlling a driving current to the shift fork based on the map.