Patent ID: 6123642
Filing Date: 2000-09-26
Classification: B60K,B60L,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
A speed change control apparatus for an engine, comprising:an engine for generating a drive force, constituted by a motor of which rotation speed is controlled by a frequency of A.C. power to be supplied, or a composite engine system including said motor;a mechanical transmission, which has an input shaft directly connected to an output shaft of said engine, for receiving a driving force and transmitting the driving force through gears to said output shaft rotating at a predetermined rotation speed;rotation speed detecting means for detecting the rotation speed of said output shaft of said transmission;engine control means for controlling said engine so that the driving force of said engine is zero when said transmission is shifted to a neutral position by disengaging said gears at a time of speed change operation, and for controlling said engine so that the detected rotation speed of said output shaft is synchronized with the rotation speed of said input shaft when said gears are engaged in the neutral position of said transmission; andspeed change control means for controlling said transmission in such a manner as to shift said transmission to the neutral position by disengaging said gears when the driving force of said engine is zero, and for controlling said transmission in such a way as to engage said gears when the rotation speed of said input shaft is nearly synchronized with the rotation speed of said output shaft.