A carbon dioxide recovery system that recovers carbon dioxide from a hybrid vehicle traveling in a CO.sub.2 recovery area including a CO.sub.2 recovery road in which a stationary CO.sub.2 recovery device collecting and recovering carbon dioxide from the atmosphere is provided acquires a residual charging capacity of the battery and position information of the hybrid vehicle and guides the hybrid vehicle such that the hybrid vehicle travels on the CO.sub.2 recovery road using a notification device when the residual charging capacity is equal to or less than a predetermined SOC threshold value while the hybrid vehicle is traveling in the CO.sub.2 recovery area.

A driving force control system for a hybrid vehicle for reducing a required time to launch the hybrid vehicle after selecting a reverse range while maintaining a driving force. The control system is configured to change an engine start threshold to restrict a startup of the engine upon satisfaction of a restricting condition, in which a low mode is established by a transmission mechanism, and a reverse drive range is selected.

Either a mode in which a vehicle travels with an electric motor or a mode in which the vehicle travels with an internal combustion engine is selected based on information on a fee when the vehicle is caused to travel with the electric motor and information on a fee when the vehicle is caused to travel with the internal combustion engine.

A hybrid vehicle control method for a hybrid vehicle having a drive motor, a battery supplying electric power to the drive motor, and an engine for power generation configured to supply electric power to the battery and the drive motor includes operating the engine at a higher engine rotation speed in an operating state in which a fuel consumption device that contributes to improved fuel consumption performance does not operate than in an operating state in which the fuel consumption device operates.

In a hybrid electric vehicle and a control method thereof, a predicted travel route is acquired, required travel energy required for the hybrid electric vehicle to travel in the specific section in an EV drive mode is specified when the predicted travel route includes a specific section where the hybrid electric vehicle is supposed to travel in the EV drive mode, a desired value for the remaining capacity of the battery is set based on the specified required travel energy, a drive mode to be executed from a plurality of drive modes is determined based on the relationship between the actual remaining capacity of the battery and the desired value, until the hybrid electric vehicle enters the specific section. Switching between the EV and an HV drive modes is prohibited, regardless of the relationship, when a predetermined time has not elapsed since the last switching of the drive mode.

A battery discharge limit control system is provided. The system includes a motor driven by receiving the power stored in a battery and a clutch connected to the rotary shaft of the motor. Additionally, an engine includes the rotary shaft connected to the rotary shaft of the motor through the clutch and a transmission changes the rotational speed of the rotary shaft of the motor or the engine based on the input of the shift stage instruction to output the rotational speed to a driving wheel of a vehicle. A controller opens the clutch and drives the motor in the reverse rotation, when the input of the shift stage instruction is a reverse shift stage.

A control device of a powertrain system executes a control input determination processing and a system control processing. The control input determination processing includes a co-state variable determination processing to update a co-state variable p of an optimization problem for each time step and a control input calculation processing. The co-state variable determination processing includes an initial value determination processing that determines, as an initial value of the co-state variable p, the sum of a base value of the initial value and an external charge/discharge correction value. The base value is a final value or an average value of the co-state variable p during the last control time period. The external charge/discharge correction value is determined based on an external charge/discharge amount obtained by subtracting a SOC at the end of the last control time period from the SOC at the start of the current control time period.

At least some embodiments of the present disclosure are directed to systems and methods of online power management for hybrid powertrains. In some embodiments, the hybrid powertrain control system is configured to conduct a brake-thermal-efficiency (BTE) estimation procedure when the powertrain is in operation by operating the hybrid powertrain at a plurality of speeds for a plurality of designated power levels and select certain BTE operating conditions to update the power management.

A propulsion system for a hybrid electric vehicle comprises a traction motor having first and second stator windings; a power source having a DC power output coupled to the first windings; a battery having a DC power output coupled to the second windings; and a controller to independently control: (i) a first power level output at the first DC power output, and (ii) a second power level of motive power output by the traction motor; wherein responsive to a signal to set the second power level less than full capacity of the traction motor, the controller provides a power difference between the first and second power levels from the second windings to the battery.

When a manifold catalytic converter, which is a catalyst above an exhaust passage, is warmed, a control unit is configured to control the energization of an electric heater of the manifold catalytic converter, and/or the driving of an internal combustion engine in accordance with a battery SOC of a battery. This makes it possible in a hybrid vehicle to warm the manifold catalytic converter using an amount of electric power consumed by motoring of an electric motor, and generally to shorten a time taken to drive the internal combustion engine for catalyst warming.