Aspects of the present invention relate to a method and to a control system for a vehicle, the method comprising: determining that a trigger condition is satisfied, wherein satisfaction of the trigger condition is dependent on a vehicle speed of the vehicle relative to at least one threshold speed, the at least one threshold speed having a value corresponding to is vehicle speed no greater than four metres per second; and based at least on the determination, controlling when a mode change between a first operating mode and a second operating mode is performed, wherein in the first operating mode the internal combustion engine is in a disconnected state not configured to provide tractive torque, and an electric machine is configured to provide tractive torque, and wherein in the second operating mode at least the internal combustion engine is in a connected state configured to provide tractive torque.

One axle of a hybrid vehicle is powered by an electric motor while a second axle of the vehicle is powered by a powertrain that includes an internal combustion engine. The electrically driven axle can be controlled in a speed control mode or in a torque control mode based on a driver demanded torque. The speed control mode is used when slip is detected at the electrically driven axle. The torque control mode is used when the electrically driven axle has traction. During a transition between these modes, the rate of change of torque is controlled to a predetermined level to mitigate noise, vibration, and harshness.

A hybrid powertrain system includes an internal combustion engine and a transmission arranged in a parallel configuration with a non-combustion torque machine to transfer traction power to a driveline. A method of controlling the hybrid powertrain system includes monitoring vehicle speed and an accelerator pedal position and determining a traction power command based thereon. A motor power that is input to the driveline from the torque machine is determined, and an adjusted engine power command is determined based upon the traction power command and the motor power from the torque machine. An adjusted accelerator pedal position is determined based upon the adjusted engine power command and the vehicle speed, and a preferred transmission state is determined based upon the adjusted accelerator pedal position and the vehicle speed. The transmission is controlled to the preferred transmission state.

The invention relates to a method for regulating a hybrid drive of a hybrid electric motor vehicle which has an electric energy store (HV), said method having the following steps: determining (S1) criteria for engaging the electric drive (EM1; EM1, EM2) and/or the internal combustion engine (VM) using an adjustable drive mode, wherein a part of a battery capacity of the electric energy store (HV) is reserved using a variable setting; and regulating (S2) the engagement of the electric drive (EM1; EM1, EM2) and/or the internal combustion engine (VM) of the hybrid electric motor vehicle using the determined criteria and the variable setting.

The invention relates to a method for regulating a hybrid drive of a hybrid electric motor vehicle which has an electric energy store (HV), said method having the following steps: determining (S1) criteria for engaging the electric drive (EM1; EM1, EM2) and/or the internal combustion engine (VM) using an adjustable drive mode, wherein a part of a battery capacity of the electric energy store (HV) is reserved using a variable setting; and regulating (S2) the engagement of the electric drive (EM1; EM1, EM2) and/or the internal combustion engine (VM) of the hybrid electric motor vehicle using the determined criteria and the variable setting.

A hybrid vehicle includes: an engine; first and second rotating electric machines; a connection/disconnection mechanism; a power storage device; and a control device. Further, when an acceleration request occurs during EV traveling mode, the control device controls, when determining that a predetermined acceleration smaller than a requested acceleration and corresponding to a vehicle speed cannot be generated by torque output by the second rotating electric machine, the torque output by the second rotating electric machine so as to generate an acceleration less than the predetermined acceleration while controlling the torque by the engine and torque by the first rotating electric machine, and when determining that the predetermined acceleration cannot be generated by the torque output by the second rotating electric machine, controls the torque output by the second rotating electric machine so as to generate the acceleration equal to or greater than the predetermined acceleration.

The present disclosure relates to a shift control apparatus of a vehicle and its method. In particular, the shift control apparatus includes: a transmission including a first clutch and a second clutch; a torque source to generate power for driving a vehicle; a data detector to detect a vehicle state data; and a vehicle controller to connect a current stage synchronizer to a next stage driving gear if the vehicle state data satisfy a shift condition, release the first clutch to be connected to the driving gear of a current stage, perform a speed control of a torque source while maintaining the second clutch connected to the driving gear of the next stage in a slip state, and release the second clutch and connect the first clutch if the vehicle stage data satisfy a speed control completion condition to complete a shift to a target stage.

In a vehicle, a first rotating electrical machine, is connected to first wheels via a clutch, and second rotating electrical machines are connected to second wheels or the first wheels without going through the clutch. A power control device allocates electric power to the second rotating electrical machines with higher priority over the first rotating electrical machine when adding additional power to power of an internal combustion engine, thereby generating power of the second rotating electrical machines with higher priority over power of the first rotating electrical machine.

A control method of a power train for a hybrid vehicle is provided. The method includes determining whether an engine corresponds to an optimal operating point when intervention for upshifting is demanded during an HEV driving mode and determining whether an amount of demanded intervention is equal to or less than a value adding maximum intervention torques of a drive motor and an HSG. Each intervention torque of the drive motor and the HSG is determined to adjust a whole energy-collect rate by the drive motor and the HSG to a maximum value of the amount of demanded intervention, and simultaneously, the value adding the intervention torques of the drive motor and the HSG satisfies the amount of demanded intervention.

A charge control apparatus of a hybrid vehicle is provided. The apparatus adjusts charge of a hybrid vehicle based on a vehicle running state when entering a charge mode. The charge control apparatus includes an engine clutch that is disposed between an engine and a first motor to selectively connect the engine and the first motor and a battery that provides a voltage to the first motor. A data detection unit detects driving data for charging the battery and a vehicle controller generates an average speed for a predetermined time using a vehicle speed of the driving data. In addition, the controller sets a charge mode based on the average speed and charges the battery using the charge mode.