Methods and systems are provided for operating a hybrid vehicle during launch conditions from rest. In one example, a threshold speed below which a clutch is closed during a vehicle launch is adjusted so that driver demand wheel torque is held constant for a constant accelerator pedal position until the clutch is closed.

A drive train for a motor vehicle has at least one internal combustion engine with an output shaft for providing torques for driving the motor vehicle and having a full load curve, and at least one electrical machine with an electrical operating voltage of at most 60 volts that is designed to drive the output shaft in order to assist the internal combustion engine in driving the motor vehicle. The drive train has at least one first operating state in which the electrical machine assists the internal combustion engine in driving the motor vehicle in at least one rotational speed range of the internal combustion engine such that a torque provided by the output shaft exceeds the full load curve and falls below the maximum torque of the full load curve; and/or at least one second operating state in which the electrical machine assists the internal combustion engine in driving the motor vehicle such that a torque provided by the output shaft exceeds the full load curve and the maximum torque of the full load curve.

A drive train for a motor vehicle has at least one internal combustion engine with an output shaft for providing torques for driving the motor vehicle and having a full load curve, and at least one electrical machine with an electrical operating voltage of at most 60 volts that is designed to drive the output shaft in order to assist the internal combustion engine in driving the motor vehicle. The drive train has at least one first operating state in which the electrical machine assists the internal combustion engine in driving the motor vehicle in at least one rotational speed range of the internal combustion engine such that a torque provided by the output shaft exceeds the full load curve and falls below the maximum torque of the full load curve; and/or at least one second operating state in which the electrical machine assists the internal combustion engine in driving the motor vehicle such that a torque provided by the output shaft exceeds the full load curve and the maximum torque of the full load curve.

An acceleration method for a hybrid drivetrain includes providing the hybrid drivetrain, setting an initial torque transmission ratio of a belt-drive transmission to a lower transmission ratio, and opening a first disconnect clutch to interrupt torque transmission between an internal combustion engine and an electric machine. The method also includes receiving an acceleration command, shifting the torque transmission ratio with a transmission adjustment gradient from the lower transmission ratio towards an upper transmission ratio, increasing a rotor speed of a rotor shaft of the electric machine with a rotor shaft adjustment gradient, and engaging a first disconnect clutch to rotate an ICE shaft to start the internal combustion engine and increase a rotational speed of the ICE shaft towards a current rotor speed.

An acceleration method for a hybrid drivetrain includes providing the hybrid drivetrain, setting an initial torque transmission ratio of a belt-drive transmission to a lower transmission ratio, and opening a first disconnect clutch to interrupt torque transmission between an internal combustion engine and an electric machine. The method also includes receiving an acceleration command, shifting the torque transmission ratio with a transmission adjustment gradient from the lower transmission ratio towards an upper transmission ratio, increasing a rotor speed of a rotor shaft of the electric machine with a rotor shaft adjustment gradient, and engaging a first disconnect clutch to rotate an ICE shaft to start the internal combustion engine and increase a rotational speed of the ICE shaft towards a current rotor speed.

An embodiment system for controlling power consumption of a high voltage battery includes a driver's requested torque determiner configured to determine a driver's intention to accelerate a vehicle and to calculate a driver's requested torque, an available power amount calculator configured to calculate an available power amount of a difference between an existing power consumption amount of electronic components configured to use the high voltage battery as a power source and a minimum power consumption amount of the electronic components required by a vehicle system, and a driving controller configured to variably control power applied to the electronic components and power applied to a drive motor of the vehicle upon determining the driver's intention to accelerate the vehicle.

A method for operating a motor vehicle including a drive mechanism having at least a first drive unit and at least a second drive unit is provided. The method includes providing a drive torque directed at the driving of the motor vehicle in a first setting of the drive mechanism only by means of the second drive unit and in a second setting by means of both drive units, wherein upon exceeding a start-up threshold value by a demanded preset power there is a switching from the first setting to the second setting, and upon falling below a shut-off threshold value by the demanded preset power there is a switching from the second setting to the first setting. It is provided that the start-up threshold value and/or the shut-off threshold value is determined in dependence on a driving resistance of the motor vehicle and/or a vehicle weight of the motor vehicle. A motor vehicle employing the method is also provided.

Systems and methods for coordinating and providing towing acceleration assistance between towing vehicles and towed vehicles during vehicle towing events are disclosed. The towing acceleration assistance may be provided by the towed vehicle in the form of an assistive propulsive torque to assist the towing vehicle with acceleration during the towing event when one or more vehicle conditions indicate a need for the towing acceleration assistance. The towing acceleration assistance may end when the one or more vehicle conditions no longer indicate the need for the towing acceleration assistance.

Systems and methods for coordinating and providing towing acceleration assistance between towing vehicles and towed vehicles during vehicle towing events are disclosed. The towing acceleration assistance may be provided by the towed vehicle in the form of an assistive propulsive torque to assist the towing vehicle with acceleration during the towing event when one or more vehicle conditions indicate a need for the towing acceleration assistance. The towing acceleration assistance may end when the one or more vehicle conditions no longer indicate the need for the towing acceleration assistance.

A driving control method for a hybrid vehicle including an electric motor and an engine includes, when an acceleration request via manipulation of an accelerating pedal and a deceleration request via manipulation of a brake pedal are simultaneously made in a situation in which a predetermined condition is satisfied, implementing the acceleration request as torque of the engine, and implementing the deceleration request as regenerative brake torque of the electric motor.