Abstract: A method for disconnecting an electrical machine connected with the wheels of a vehicle's drive axle by means of a dog clutch having intermeshing couplers includes, upon receipt of a command to disengage, two successively activated steps. In the first step, a torque equal to a calibrated threshold of a target torque (d) is applied to the electrical machine so to effect a zero torque between the couplers. During this step, a dog clutch actuator is deactivated so to allow the dog clutch to disengage from the electrical machine as quickly as possible. Next, a torque having a value determined according to a slope whose value ranges from the calibrated threshold of the target torque (d) to zero is applied to the electrical machine.

Abstract: To couple an electric machine (42) with running-gear wheels (44) of a vehicle when the vehicle is running, the method comprises two steps activated in succession on the basis of a coupling request; a step of driving the electric machine (42) up to speed, in which a rotation rate command is applied to the electric machine (42) so as to reduce a déviation between the speed of an upstream dog clutch (51) rotating integrally with the electric machine and the speed of a downstream dog clutch (52) rotating integrally with the wheels (44); and an engagement step activated following a déviation (110) in speed that is below a predetermined threshold, in which the electric machine (42) is slaved to a torque command and the dog clutches (51, 52) are brought together until a state of positive interlock of the two dog clutches is obtained.

Abstract: A method for disconnecting an electrical machine connected with the wheels of a vehicle's drive axle by means of a dog clutch having intermeshing couplers includes, upon receipt of a command to disengage, two successively activated steps. In the first step, a torque equal to a calibrated threshold of a target torque (d) is applied to the electrical machine so to effect a zero torque between the couplers. During this step, a dog clutch actuator is deactivated so to allow the dog clutch to disengage from the electrical machine as quickly as possible. Next, a torque having a value determined according to a slope whose value ranges from the calibrated threshold of the target torque (d) to zero is applied to the electrical machine.