Patent ID: 9555808
Date: 2017-01-31
CPC Classifications: B60K,B60W,F16H,Y10T

Claim:
1. A method for operating a powertrain of a motor vehicle with two vehicle axles which can be driven by separate drive assemblies, wherein at least one of the two vehicle axles can be driven by an electromotive drive assembly, and wherein the at least one vehicle axle has two wheels and at least three axleshaft portions, wherein a first axleshaft portion has a first wheel, wherein the first axleshaft portion and a second axleshaft portion are coupled by a differential gear, wherein the second axleshaft portion and a third axleshaft portion are arranged so they can be connected together by a clutch, and wherein the third axleshaft portion has a second wheel, wherein during a drive mode of the motor vehicle with the clutch open, the electromotive drive assembly is held at a standby rotation speed under active regulation by an electric drive control unit, wherein the standby rotation speed tracks a synchronization rotation speed, and wherein the standby rotation speed of the electromotive drive assembly is at least half as great as the synchronization rotation speed.