A vehicle having a powertrain control system includes an internal combustion engine configured to generate torque, and a transmission to transfer the torque to at least one driveline component of the vehicle. At least one electronic sensor is configured to output a signal indicative of at least one operating parameter of the vehicle. The powertrain control system further includes a vehicle scenario detection module and an electronic control module. The vehicle scenario detection module determines a current vehicle scenario of the vehicle based on the at least one operating parameter. The electronic control module determines a current vehicle scenario based on the at least one operating parameter, to actively determine an active skid-torque value in real-time based on the current vehicle scenario. The control module further generates a torque limiting control signal that adjusts operation of a powertrain system of the vehicle based on the active skid-torque value.

A drivetrain system includes a controller that is programmed to, in a presence of a request for increased drivetrain torque that results in reversal of drivetrain torque direction, command an increase in drivetrain torque at a reduced rate while a value that is based on drivetrain speed difference remains within a predetermined range absent a braking torque request exceeding a threshold. The controller is further programmed to command the increase at an accelerated rate upon the braking torque request exceeding the threshold.

A method of operating a powertrain system during coasting operation, wherein the powertrain system includes a driveline component (e.g., a transmission, drive shaft, differential, axle or wheel) having an output torque profile. The method includes: (i) determining a desired output torque transition profile for the driveline component between a first transition point before an end of a first state, and a second transition point after a beginning of a second state; and (ii) in response to a braking torque request, generating a friction braking torque command to operate a friction braking system, and adjusting the friction braking torque command during a transitional state between the first and second transition points by an amount corresponding to a difference between a magnitude of the output torque profile and a magnitude of the desired output torque transition profile.

A vehicle includes driving wheels, driven wheels, a drive device connected to a drive shaft, a drive force distribution device, and an electronic control unit configured to execute a moderate change process on a required torque required for the drive shaft to set a target torque to be output to the drive shaft when the torque output to the drive shaft changes and crosses a value of zero. The electronic control unit is configured to control the drive device such that the target torque is output to the drive shaft, and set the target torque such that a change in the target torque with respect to a change in the required torque is more moderate when the driving side distribution ratio is small compared with the change in the target torque with respect to the change in the required torque when the driving side distribution ratio is large.

A vehicle control device includes a control unit configured to obtain information relating to a drive state of a vehicle, calculate a requirement torque, compute a first target torque, a second target torque, and an ideal change rate of a total torque of the first drive torque and the second drive torque, and at least control a magnitudes of the first drive torque and the second drive torque outputted from the first drive unit and the second drive unit. The control unit is configured to control the first drive unit to operate a first zero-cross process and control the second drive unit to operate a second zero-cross process after the first zero-cross process ends.

A vehicle control device includes a control unit configured to obtain information relating to a drive state of a vehicle, calculate a requirement torque, compute a first target torque, a second target torque, and an ideal change rate of a total torque of the first drive torque and the second drive torque, and at least control a magnitudes of the first drive torque and the second drive torque outputted from the first drive unit and the second drive unit. The control unit is configured to control the first drive unit to operate a first zero-cross process and control the second drive unit to operate a second zero-cross process after the first zero-cross process ends.

A vehicle includes driving wheels, driven wheels, a drive device connected to a drive shaft, a drive force distribution device, and an electronic control unit configured to execute a moderate change process on a required torque required for the drive shaft to set a target torque to be output to the drive shaft when the torque output to the drive shaft changes and crosses a value of zero. The electronic control unit is configured to control the drive device such that the target torque is output to the drive shaft, and set the target torque such that a change in the target torque with respect to a change in the required torque is more moderate when the driving side distribution ratio is small compared with the change in the target torque with respect to the change in the required torque when the driving side distribution ratio is large.

A method of operating a powertrain system during coasting operation, wherein the powertrain system includes a driveline component (e.g., a transmission, drive shaft, differential, axle or wheel) having an output torque profile. The method includes: (i) determining a desired output torque transition profile for the driveline component between a first transition point before an end of a first state, and a second transition point after a beginning of a second state; and (ii) in response to a braking torque request, generating a friction braking torque command to operate a friction braking system, and adjusting the friction braking torque command during a transitional state between the first and second transition points by an amount corresponding to a difference between a magnitude of the output torque profile and a magnitude of the desired output torque transition profile.

A method for controlling a response to driving load of a hybrid vehicle includes: estimating an optimum speed for a current driving situation, estimating a target driving load based on the optimum speed, determining an eco-level corresponding to the target driving load from among a plurality of eco-levels, and changing at least some of an eco-gauge according to the determined eco-level.

A speed control system for a vehicle. The speed control system has a torque control for automatically causing application of positive and negative torque to one or more wheels of a vehicle to cause a vehicle to travel in accordance with a target speed value. The system receives information indicative of a gradient of a driving surface over which the vehicle is driving, with the torque control being configured to control the rate of change of the amount of torque applied to the one or more wheels, in order to attempt to maintain the vehicle traveling in accordance with the target speed value, in dependence at least in part on the gradient of the driving surface.