Patent ID: 8577527

Claim:
A drive control device for a vehicle comprising: an engagement mechanism which includes a revolution component that has plural teeth and is revolved by an output torque of an internal combustion engine, and a fixed component that has plural teeth and engages with the revolution component; a torque applying unit which applies a torque different from the output torque of the internal combustion engine, to the revolution component which receives the output torque of the internal combustion engine; a first transmitting control unit which engages the engagement mechanism to make the engagement mechanism receive a reaction force of the output torque of the internal combustion engine, and simultaneously executes a control for transmitting the output torque of the internal combustion engine to wheels; and a torque estimating control unit which executes a control for estimating the output torque of the internal combustion engine, wherein the torque estimating control unit comprises: a torque applying control unit which executes a control of the torque applied to the revolution component by the torque applying unit during executing the control by the first transmitting control unit; a phase change detecting unit which detects a phase change between the revolution component and the fixed component in a direction of rotation during executing the control by the torque applying control unit; and a torque estimating unit which estimates the output torque of the internal combustion engine based on the phase change detected by the phase change detecting unit and the torque applied by the torque applying unit by the control of the torque applying control unit during executing the control by the first transmitting control unit, wherein the phase change detecting unit detects that a phase of the revolution component is changed in a direction opposite to a direction of the output torque of the internal combustion engine, by the torque applied by the torque applying unit which is opposite to the output torque of the internal combustion engine, in order to detect the phase change.