Patent ID: 8423264

Claim:
A vehicle vibration damping control device for suppressing vibration of a vehicle body by controlling a driving output of a vehicle having a diesel engine as a driving device, comprising: a compensation component computing portion which, based on a wheel torque generated on a ground contact site of a wheel of the vehicle and a road surface and acting on the wheel, computes a compensation component which compensates the wheel torque to suppress an amplitude of the vibration of the vehicle body; and a control gain determining portion which determines a control gain for the compensation component in superimposing the compensation component on a requested value of a driving torque to the engine, wherein, at a time point of a reversion of a sign of a value of the compensation component, the control gain determining portion decreases the control gain if the value of the compensation component has deviated from a restriction range for variation of a fuel injection quantity determined based on an operational condition of the engine in a term between the time point and a preceding time point of a reversion of a sign of the value of the compensation component, and increases the control gain if the value of the compensation component has not deviated from the restriction range for variation of the fuel injection quantity of the engine in the term.