A method for operating a hybrid vehicle having an electrical energy store, an electric drive and an internal combustion engine, includes activating, by a driver of the hybrid vehicle, a battery control mode by actuating a defined operator control element. A special drive operating strategy for the internal combustion engine is triggered in the battery control mode with the electric drive switched off. An increased charging gradient is then obtained by the special drive operating strategy if a current state of charge of the electrical energy store is below one of a desired state of charge or a lower tolerance threshold with respect to the desired state of charge.

A method of controlling driving of a hybrid electric vehicle having an engine connected to main drive wheels via a transmission and a motor connected to auxiliary drive wheels includes setting a drive mode, controlling an input torque of the transmission in response to an extent of depression of an accelerator pedal (APS) according to the drive mode, performing distribution of drive power to the main drive wheels and the auxiliary drive wheels and variable shift-pattern control based on a result of a comparison between an amount of slip of the main drive wheels and the amount of slip of the auxiliary drive wheels, and determining whether to perform variable shift-time control in consideration of a type of the variable shift-pattern control or a number of revolutions per minute (RPM) of the engine at beginning of a shift.

Methods and system are described for controlling operation of a driveline during off-road maneuvers. In one example, electric machines included in the driveline may be switched from a torque or power control mode to a speed control mode to improve vehicle stability. The methods and systems may be applied to a variety of driveline configurations.

A device for controlling driving of an electric four-wheel drive vehicle at the time of shift is provided. The device controls driving of an electric four-wheel drive vehicle to minimize energy loss occurring on a power transmission path during shift, thereby improving fuel efficiency.

The present invention relates to a method for operating a motor vehicle. A request for coupling a power take-off is detected. It is checked (12) whether relevant boundary conditions for coupling the power take-off are fulfilled. If the boundary conditions are fulfilled, a system pressure for actuating the power take-off clutch is built up (16). It is checked (18) whether sufficient system pressure to actuate the power take-off clutch has been built up. When sufficient system pressure has been built up, a confirmation signal is produced (20). In reaction to the confirmation signal, a driving transmission control unit is modified (34) in order to actuate the at least one shifting element of the driving transmission with a higher actuation pressure than with an unmodified driving transmission control unit.

A vehicle control system according to this embodiment includes: a storage battery that stores a electric power generated by a power generating unit or electric power supplied by a charging spot; a use status acquiring unit that acquires a use status of a charging spot present in an area identified by a route from a place of departure to a destination of the vehicle; and a control unit that sets a charging target value of the storage battery at the time of arrival of the vehicle at a destination to be higher in a case in which a status is determined in which the charging spot is unusable than a case in which a status is determined in which the charging spot is usable on the basis of the use status of the charging spot acquired by the use status acquiring unit.

A method for detecting combustion irregularities in an internal combustion engine unit coupled to an electric propulsion unit of a hybrid motor vehicle having a management unit, consisting in intermittently measuring a pair of values P, θ that are respectively representative of the value P of the power consumed by the electric engine and of the value θ of the speed of the combustion engine, in comparing each pair of measured values P, θ with a pair of theoretical values Pth, θth corresponding to the setpoint data delivered by the management unit, and, when there is a lack of correspondence between at least one of the measured values P, θ and the associated theoretical value Pth, θth, triggering a synchronization procedure intended to determine the phasing of the internal combustion engine.

A vehicle control system increases the travel distance of a vehicle by inhibiting reduction in the SOC of a battery even when the output of an engine is limited. The control system is characterized by comprising: an electric motor that drives a vehicle: an engine that drives a power generator that generates electric power to be supplied to the electric motor; a battery that is configured to be chargeable by the power generator and that is electrically connected to the electric motor; and a controller that controls the electric motor.

A machine control system controls operation of any one of a plurality of interchangeable power sources mounted on a machine. The machine includes an undercarriage supporting ground engagement members that propel the machine and an upper structure rotatably supported on the undercarriage. The upper structure includes a swing frame that supports an operator cab, an interchangeable power source, hydraulic components, and electrical components. A processor processes inputs, outputs and operating characteristics specific to each of the plurality of power sources, and standardizes the power output by each of the power sources to provide a normalized, consistent control and operation of systems of the machine regardless of which of the power sources is mounted on the machine.

When regeneration operation is being performed, electric power on a main-machine side is supplied to an auxiliary-machine side, a voltage on the auxiliary-machine side is controlled to become a first voltage value predetermined on the basis of operating voltage specifications of an auxiliary apparatus, a generator on the auxiliary-machine side is deactivated to stop supply of electric power to the auxiliary-machine side, and electric power on the auxiliary-machine side is supplied to a power storage apparatus. When the regeneration operation is ended, the supply of the electric power from the main-machine side to the auxiliary-machine side is stopped, the generator on the auxiliary-machine side is activated, the generator on the auxiliary-machine side is controlled such that a voltage on the auxiliary-machine side becomes the first voltage value, electric power of the power storage apparatus is supplied to the auxiliary-machine side, and the voltage on the auxiliary-machine side is controlled to become a second voltage value higher than the first voltage value. This enables reduction of fluctuations of a voltage supplied to auxiliary machines at a time of switching of regeneration operation by travel motors.