Patent ID: 6819985
Filing Date: 2004-11-16
Classification: B60K,B60L,B60W,F16H,Y02T,Y10S

Abstract:
A shift control device for a hybrid vehicle comprising:a differential mechanism including at least four rotating elements whose rotating states are determined by rotating states of two of the at least four rotating elements, wherein the elements connect a driving source, two motor/generators and an output; and a controller programmed to: calculate a target driving power based on a driving condition; make a first judgment as to whether the target driving power is less than or equal to a first driving power corresponding to an operating region wherein the driving source is driven under optimum fuel efficiency; when the first judgment shows that the target driving power is larger than the first driving power, calculate a first driving source speed and a first driving source torque corresponding to an operating region wherein the target driving power is realized such that the driving source is driven under maximum load and control the driving source at the first driving source speed and the first driving source torque.