A method of controlling driveline backlash

摘要

A method of controlling driveline backlash in a hybrid drive motor vehicle (10) having a primary drive unit (12) and a secondary drive unit comprising an electrical machine (22) arranged downstream of the primary drive unit (12) and which is operable to rotate the driveline. A control unit (32) is controlling the electrical machine (22) and senses electric current flowing to the machine, wherein when the vehicle is stationary, the electrical machine (22) applies a drive torque to the driveline. The electrical current and rotation of said driveline are monitored by the control unit, and when the current reaches a predetermined level, the total rotation is associated with the backlash in the driveline.