Abstract: A throttle valve 11 that adjusts an amount of air flowing into an intake passage of an internal combustion engine 1, a fuel injection valve 9 that injects fuel into the internal combustion engine 1, and a generator-motor 6 that drives the internal combustion engine 1 via a drive belt 5 are controlled by an internal combustion engine control unit 13. The internal combustion engine control unit 13 opens the throttle valve 11 to a first throttle opening after detecting a request to start the internal combustion engine 1, then causes the fuel injection valve 9 to inject fuel while maintaining the first throttle opening, and then opens the throttle valve 11 to a second throttle opening that is larger than the first throttle opening.

Abstract: A throttle valve 11 that adjusts an amount of air flowing into an intake passage of an internal combustion engine 1, a fuel injection valve 9 that injects fuel into the internal combustion engine 1, and a generator-motor 6 that drives the internal combustion engine 1 via a drive belt 5 are controlled by an internal combustion engine control unit 13. The internal combustion engine control unit 13 opens the throttle valve 11 to a first throttle opening after detecting a request to start the internal combustion engine 1, then causes the fuel injection valve 9 to inject fuel while maintaining the first throttle opening, and then opens the throttle valve 11 to a second throttle opening that is larger than the first throttle opening.

Abstract: A travel control device (1) provided to a vehicle travel device (100) performs correction calculation of the rate of change of a requested acceleration using a relatively small value when the rate of change of the requested acceleration obtained from an angle sensor (2) is small, and performs correction calculation of the rate of change of the requested acceleration using a relatively large value when the rate of change of the requested acceleration obtained from the angle sensor (2) is large.

Abstract: An engine stopping section first selects, when an engine stop condition is satisfied, a power-generation braking mode in which a power-generation braking torque is applied to the engine by a power generation operation of the generator, to thereby apply the power-generation braking torque to the engine, and then selects a short-circuit braking mode in which a short-circuit braking torque is applied to the engine by short-circuiting each energization phase of an armature coil with a semiconductor switch and by causing a field current to flow through a field coil, to thereby apply the short-circuit braking torque to the engine.

Abstract: A throttle valve 11 that adjusts an amount of air flowing into an intake passage of an internal combustion engine 1, a fuel injection valve 9 that injects fuel into the internal combustion engine 1, and a generator-motor 6 that drives the internal combustion engine 1 via a drive belt 5 are controlled by an internal combustion engine control unit 13. The internal combustion engine control unit 13 opens the throttle valve 11 to a first throttle opening after detecting a request to start the internal combustion engine 1, then causes the fuel injection valve 9 to inject fuel while maintaining the first throttle opening, and then opens the throttle valve 11 to a second throttle opening that is larger than the first throttle opening.

Abstract: A travel control device (1) provided to a vehicle travel device (100) performs correction calculation of the rate of change of a requested acceleration using a relatively small value when the rate of change of the requested acceleration obtained from an angle sensor (2) is small, and performs correction calculation of the rate of change of the requested acceleration using a relatively large value when the rate of change of the requested acceleration obtained from the angle sensor (2) is large.

Abstract: An engine stopping section first selects, when an engine stop condition is satisfied, a power-generation braking mode in which a power-generation braking torque is applied to the engine by a power generation operation of the generator, to thereby apply the power-generation braking torque to the engine, and then selects a short-circuit braking mode in which a short-circuit braking torque is applied to the engine by short-circuiting each energization phase of an armature coil with a semiconductor switch and by causing a field current to flow through a field coil, to thereby apply the short-circuit braking torque to the engine.