Patent ID: 7971667
Filing Date: 2011-07-05
Classification: B60K,B60W,Y02T

Abstract:
1. A hybrid electric vehicle comprising: an internal combustion engine; a mechanical torque transmission device for transmitting engine torque to at least one wheel, the mechanical torque transmission device having a lash region; an electric energy conversion device connected between the mechanical torque transmission device and the wheel; and a control system, the control system adjusting the electric energy conversion device from negative to positive torque without a lash region transition delay to meet a desired vehicle response, and then adjusting torque of the internal combustion engine with engine torque limited to transition through the lash region while counteracting the limited engine torque with an inversely adjusted torque of the electric energy conversion device, and then further adjusting torque of the electric energy conversion device and the torque of the internal combustion engine to meet the desired vehicle response.