Patent ID: 8303464
Filing Date: 2012-11-06
Classification: B60K,B60L,B60W,Y02T,Y10T

Abstract:
1. A vehicular power transmission control apparatus applied to a vehicle comprising an internal combustion engine and an electric motor as power sources, comprising: a transmission including an input shaft to provide a power transmission path between said input shaft of said transmission and an output shaft of said internal combustion engine, and an output shaft to provide a power transmission path between said output shaft of said transmission and drive wheels of said vehicle, wherein said transmission is capable of adjusting a transmission reduction ratio which is a ratio of a rotational speed of said input shaft of said transmission to a rotational speed of said output shaft of said transmission; a changeover mechanism which is capable of changing a connection state of an output shaft of said electric motor to any one from two or more states including, running-resistance-correlating-value obtaining means for obtaining a running-resistance-correlating-value correlating with a running resistance which is a resistance to decelerate said vehicle caused by a running of said vehicle; and control means for selecting a connection state of said output shaft of said electric motor based on said running-resistance-correlating-value and a parameter indicative of a running condition of said vehicle other than said running-resistance-correlating-value, in such a manner that a possibility of selecting a connection state, in which a maximum value of a driving torque which can be transmitted from said electric motor to said output shaft of said transmission is greater, becomes higher as said running resistance is larger, and for controlling said changeover means in such a manner that an actual connection state of said output shaft of said electric motor coincides with said selected connection state.