Patent Document ID: 20130261859
Application ID: 13827933
Patent Flag: 0

Claim One:
1. A hybrid vehicle on which an internal combustion engine and a motor are mounted as drive sources comprising: a drive control section that stops the internal combustion engine when a predetermined stop condition is satisfied in a case where a vehicle speed of the hybrid vehicle is not more than a predetermined first vehicle speed, and starts the internal combustion engine when a predetermined start condition is satisfied and controls a torque generated by the internal combustion engine and a torque generated by the motor; a self-diagnosis section that executes a diagnosis of a component related to an exhaust quality of the internal combustion engine during a fuel-cut operation of the internal combustion engine; a fuel-cut request section that generates to the drive control section a fuel-cut request for operating the internal combustion engine in a fuel-cut state in order to execute the diagnosis; and an idle operation control section that, in a case where the internal combustion engine is operated in an idle state by the drive control section, feedback-controls a control parameter that adjusts a rotation speed of the internal combustion engine such that the rotation speed of the internal combustion engine is maintained at a target idle rotation speed, and learns a value corresponding to the control parameter as a learned value for controlling the idle operation in a state in which the vehicle speed is not more than a predetermined second vehicle speed which is lower than the first vehicle speed, wherein the fuel-cut request section continues to generate the fuel-cut request until the learning is completed, and the drive control section continues the fuel-cut operation of the internal combustion engine in a case where the fuel-cut request is generated even when the predetermined stop condition is satisfied.