A method for determining an optimized torque distribution to the wheels of a road vehicle comprising the steps of determining a table of distribution of the torque between a front axle and a rear axle; determining a second table and a third table of distribution of the torque between a right wheel and a left wheel of the rear axle and of the front axle, respectively; detecting the current longitudinal dynamics; using the first, the second and the third table to determine a current value of the first, of the second and of the third distribution factor, respectively, based on the current longitudinal speed and on the current longitudinal acceleration of the road vehicle.

A powertrain for an electric vehicle has a driveshaft connected to two or more motors where each motor is connected to a battery pack associated with that motor. A controller is used to select one or more motors to be energized for propulsion or used for regenerative braking to recharge the battery pack to which it is coupled. The controller can optimize the state of charge (SOC) difference of the battery packs and provide for a smooth and efficient powering of the vehicle for acceleration and climbing and optimize the range of the vehicle by management of the relative SOC of the battery packs. The electric vehicle can include two or more fuel cells that individually coupled to a motor.

A weight profile determination system may be provided that includes a sensor and a controller. The sensor may be disposed along a route and configured to generate a plurality of force measurements of a vehicle system moving on the route relative to the sensor. The force measurements may be obtained at different times and correspond to different locations along a length of the vehicle system. The controller may determine a weight profile for the vehicle system based on the force measurements generated by the sensor. The weight profile can represent a distribution of weight along the length of the vehicle system. The controller may communicate the weight profile to one or more of the vehicle system or an offboard device for controlling movement of the vehicle system based on the weight profile.

A method for operating an electrically operated or also electrically operable motor vehicle provided with a rechargeable electric energy storage device associated with the drive motor of the motor vehicle. A target charging state is determined for the energy storage device and an operating strategy is determined for a route that is calculated, entered or predicted for the next trip, by which recuperative deceleration is enabled with a specifiable minimum amount for deceleration processes occurring along the route. A total mass of the motor vehicle, including optionally a trailer connected to the motor vehicle, deviating from an input normal value and an air resistance of the motor vehicle deviating from a predetermined normal value are taken into account.

When an acceleration degree of a vehicle in a state of an electric motor generating torque as motive power is small compared to the acceleration degree of the vehicle in a state of being propelled using that torque, a user is notified by displaying a warning on a display which is a notification device of the vehicle.

A vehicle includes a regenerative braking device provided on regenerative braking wheels, which are any ones of front wheels and rear wheels, a frictional braking device configured to separately control a frictional braking force applied to each of the front wheels and the rear wheels, and an electronic control unit is configured to, upon detecting a slip state where a wheel speed of the regenerative braking wheels executing regenerative braking is below a slip determination threshold value positioned between a vehicle body speed and an anti-lock brake control operation threshold value, execute a regenerative control process for controlling the regenerative braking device such that the regenerative braking device generates a regenerative braking force that decreases a difference between the wheel speed and the slip determination threshold value.

A control apparatus for a vehicle includes an offset torque calculator configured to perform calculation of offset torque to be applied to at least one wheel of the vehicle. The offset torque is required to stop the vehicle on a sloping road having a predetermined gradient. The control apparatus includes a motor controller configured to, for stopping the vehicle on the sloping road having the predetermined gradient, perform control of causing output torque of the motor-generator to asymptotically approach the offset torque.

A method for controlling the cruising speed of a hybrid or electric propulsion vehicle includes detecting a forward travel speed of the vehicle, identifying a downhill forward travel condition of the vehicle, activating a control of the downhill cruising speed following said identification of said downhill forward travel condition, determining a reference speedy for the vehicle and calculating a charging current for the battery pack generated by the electric motor as a function of a deviation between said reference speed and the detected forward travel speed of the vehicle. The step of identifying a downhill forward travel condition of the vehicle includes calculating a parameter representative of said downhill condition as a function of the detected forward travel speed and the motor current.

A virtual sound provision apparatus for an electric vehicle includes a driving information detector configured to detect vehicle driving information for outputting a virtual driving sound, a microphone configured to detect an actual driving sound generated from the electric vehicle, a controller configured to determine a characteristic of a target sound based on an acceleration and deceleration driving pattern of a driver from an accelerator pedal input value and a brake pedal input value of the driver, and generating and outputting a sound control signal for outputting the virtual driving sound having the characteristic of the target sound based on the determined characteristic information of the target sound and characteristic information of the actual driving sound, and a sound device configured to output a virtual engine sound that simulates an engine sound from the electric vehicle at the time of acceleration and deceleration according to the sound control signal.

Described herein relates to a system of and method for recovering energy and providing power in a multi-source transmission assembly, in which the transmission assembly includes secondary power sources in combination with a primary power source, where the secondary power sources are in reverse rotation with respect to the primary power source, such that energy is recovered during deceleration or the secondary power sources power the vehicle as needed. During the translation of a vehicle employing the transmission assembly, at least one motor may function, as needed, to propel the vehicle forward. During times in which the vehicle may not positively accelerating, at least one of the motors may switch to a generator mode to generate energy to be stored in a vehicle battery. As such, at least one of the motor power sources may recover an amount of energy expended by the vehicle during acceleration.