A vehicle includes a drive system ground fault determination unit configured to determine that, when the first magnetic contactor is in a conduction state, the drive system electrical system has a ground fault when a ground stray capacitance of the drive system electrical system measured by a drive system ground fault sensor included in the drive system electrical system exceeds a drive system conduction state threshold value, and to determine that, when the first magnetic contactor is in a non-conduction state, the drive system electrical system has a ground fault when the ground stray capacitance of the drive system electrical system measured by the drive system ground fault sensor exceeds a drive system non-conduction state threshold value, which is different from the drive system conduction state threshold value.

A vehicle includes a drive system ground fault determination unit configured to determine that, when the first magnetic contactor is in a conduction state, the drive system electrical system has a ground fault when a ground stray capacitance of the drive system electrical system measured by a drive system ground fault sensor included in the drive system electrical system exceeds a drive system conduction state threshold value, and to determine that, when the first magnetic contactor is in a non-conduction state, the drive system electrical system has a ground fault when the ground stray capacitance of the drive system electrical system measured by the drive system ground fault sensor exceeds a drive system non-conduction state threshold value, which is different from the drive system conduction state threshold value.

A vehicle control apparatus sets a target speed of a vehicle such that a maximum value of the target speed is a first speed during a parking assist control. The vehicle control apparatus executes the parking assist control with maintaining a speed of the vehicle at a speed equal to or slower than a predetermined speed limit value slower than the first speed when a predetermined condition that the vehicle moves along a downward slope, is satisfied when a first electric power source device is in a normal state during the parking assist control. At least one of a braking apparatus and a shift change apparatus executes a stopping control of stopping the vehicle when a malfunction occurs in the first electric power source device during the parking assist control.

A vehicle control apparatus sets a target speed of a vehicle such that a maximum value of the target speed is a first speed during a parking assist control. The vehicle control apparatus executes the parking assist control with maintaining a speed of the vehicle at a speed equal to or slower than a predetermined speed limit value slower than the first speed when a predetermined condition that the vehicle moves along a downward slope, is satisfied when a first electric power source device is in a normal state during the parking assist control. At least one of a braking apparatus and a shift change apparatus executes a stopping control of stopping the vehicle when a malfunction occurs in the first electric power source device during the parking assist control.

Systems and methods are described for electrical power control of a hybrid vehicle. A change in an electrical load of an ancillary component of the vehicle is determined. In response to determining the change in the electrical load of the ancillary component, an electrical load of an electrically heated catalyst of the vehicle is adjusted.

The present invention relates to a method for switching power supply path of at least one electrical machine, said electrical machine being arranged to be selectively supplied power by a first power supply path and a second power supply path, respectively, by alternately opening and closing said power supply paths, said first and second power supply paths being arranged to connect a power supply source to a first connection terminal means of said electrical machine. The method includes, when switching from said first power supply path to said second power supply path: opening said first power supply path; by means of said electrical machine, controlling a terminal voltage of said first connection terminal means to substantially a power supply voltage of said second power supply path; and closing said second power supply path.

Methods and systems are provided for enabling vehicle speed control without overfilling a system battery. In one example, braking energy is applied (or recuperated) by applying a negative torque from BISG until a system battery has been sufficiently charged. Thereafter, the electrical power generated by the BISG is used to operate an electric boost assist motor, and the energy is recuperated in the form of stored compressed air.

Methods and systems are provided for enabling vehicle speed control without overfilling a system battery. In one example, braking energy is applied (or recuperated) by applying a negative torque from BISG until a system battery has been sufficiently charged. Thereafter, the electrical power generated by the BISG is used to operate an electric boost assist motor, and the energy is recuperated in the form of stored compressed air.

A control device for a series hybrid vehicle, the series hybrid vehicle including: an engine, a catalyst that is disposed in an exhaust path of the engine, a generator that generates electric power using power output from the engine, a battery that stores the electric power generated by the generator, and a traction electric motor that is driven with electric power of the battery, the control device including an electronic control unit configured to: acquire information on a temperature of the catalyst; and, when the information on the temperature of the catalyst is information corresponding to the temperature of the catalyst being equal to or higher than a predetermined temperature, change an operating point of the engine to an operating point that reduces a temperature of the exhaust gas while generating the electric power by the generator.

A control device for a series hybrid vehicle, the series hybrid vehicle including: an engine, a catalyst that is disposed in an exhaust path of the engine, a generator that generates electric power using power output from the engine, a battery that stores the electric power generated by the generator, and a traction electric motor that is driven with electric power of the battery, the control device including an electronic control unit configured to: acquire information on a temperature of the catalyst; and, when the information on the temperature of the catalyst is information corresponding to the temperature of the catalyst being equal to or higher than a predetermined temperature, change an operating point of the engine to an operating point that reduces a temperature of the exhaust gas while generating the electric power by the generator.