A method and system for blending between different torque maps of a vehicle in a smooth and progressive manner. Blending is delayed if the vehicle driver cannot detect that blending is taking place, for example, when the difference between a source map and target map is below a predetermined threshold.

The present application relates to the field of electric vehicles, and particularly to an electric vehicle and an electric-machinery control method therefor, an apparatus and a storage medium. The electric-machinery control method for the electric vehicle of the present application includes: detecting a relative deformation amount of a transmission system between a driving gear and a wheel end of an electric machinery; determining a first speed differential value between a first driving-gear rotational speed and a first wheel-end converted rotational speed when the relative deformation amount is a first threshold value; determining an output torque of the electric machinery according to the first speed differential value; controlling the driving gear to perform a gear-approaching operation relative to the driven gear according to the output torque.

A road surface submergence estimation device including a motion sensor that acquires an actual acceleration of a vehicle; a torque acquisition sensor that acquires an actual torque transmitted from a driving source to wheels of the vehicle, the driving source being mounted in the vehicle; and an estimation processor that estimates that a road surface on which the vehicle is traveling is submerged when it is determined that a submergence determination condition is satisfied. The road surface submergence estimation device may also include a wireless communication device configured to either send submergence information to a central server, or receive additional submergence information from a central server.

A vehicle system and method that implements a cycle to vehicle wheels for freeing a vehicle from a stuck condition is provided. The vehicle system includes a drive unit and controller. The drive unit provides a drive toque through a transmission to at least one wheel of the vehicle wheels for propelling the vehicle. The controller has a rock cycle module that determines a torque, a gear shift strategy and a frequency output based on vehicle inputs including wheel speeds of the vehicle wheels. The controller determines whether the rock cycle has been initiated and determines a surface type the vehicle is encountering. A first torque is selected at a torque module. A first gear shift strategy is selected at a gear module. A first frequency is selected at a frequency module. The selected torque, gear shift strategy and frequency are implemented at the drive unit, transmission and vehicle wheels.

A computer-implemented method that, when executed by data processing hardware of a vehicle, causes the data processing hardware to perform operations is provided. The operations include gathering sensor data, calculating one or more groove detection confidence values with the sensor data using one or more groove detection modules, evaluating the one or more groove detection confidence values using a road groove detection fusion module, determining whether a road groove is detected, communicating road groove data to an advanced driver-assistance system, and adapting trajectory and steering controls of the vehicle.

A computer-implemented method that, when executed by data processing hardware of a vehicle, causes the data processing hardware to perform operations is provided. The operations include gathering sensor data, calculating one or more groove detection confidence values with the sensor data using one or more groove detection modules, evaluating the one or more groove detection confidence values using a road groove detection fusion module, determining whether a road groove is detected, communicating road groove data to an advanced driver-assistance system, and adapting trajectory and steering controls of the vehicle.

A control device is provided for operating a road-coupled hybrid vehicle, which is equipped with an electronic control unit, a first drive unit paired with a primary axle, and a second drive unit paired with a secondary axle. The control unit is designed to receive input variables including a specified sum target creep torque and a command to switch over from the single-axle operation to the two-axle operation with a specified all-wheel factor. The control unit sets a specified target torque for an internal combustion engine of the primary axle according to the all-wheel factor and detects the resulting actual coupling torque of the automatic transmission. If the functional module of the control unit ascertains a difference between the actual coupling torque and the sum target creep torque, the functional module specifies a corresponding target torque for an electric drive motor of the secondary axle to compensate for the difference.

A method for operating a drivetrain of a motor vehicle is disclosed. The operation of assemblies of the motor vehicle is controlled and/or regulated by taking into account a loss torque of the drivetrain, such that when a defined first operating condition of the motor vehicle is fulfilled, then as a function of a torque of a drive aggregate (1) of the drivetrain, as a function of a drag torque of a transmission (3) of the drivetrain, and as a function of a first sum of known loss torques of the drivetrain, a second sum of the unknown loss torques of the drivetrain is determined. Thereafter, the operation of assemblies of the motor vehicle is controlled and/or regulated taking into account the first sum of the known loss torques and taking into account the second sum of the unknown loss torques.

The present application relates to the field of electric vehicles, and particularly to an electric vehicle and an electric-machinery control method therefor, an apparatus and a storage medium. The electric-machinery control method for the electric vehicle of the present application includes: detecting a relative deformation amount of a transmission system between a driving gear and a wheel end of an electric machinery; determining a first speed differential value between a first driving-gear rotational speed and a first wheel-end converted rotational speed when the relative deformation amount is a first threshold value; determining an output torque of the electric machinery according to the first speed differential value; controlling the driving gear to perform a gear-approaching operation relative to the driven gear according to the output torque.

A powertrain control method for a vehicle includes determining, based on empirical operation data for a powertrain, maximum torques for the torque generating system at each of a plurality of breakpoints corresponding to different impeller speeds for a torque converter and different speeds of a torque generating system, identifying, between two particular breakpoints, (i) a linear intersection point between the maximum torque and the impeller speed for the torque converter and (ii) an intersection region between the two particular breakpoints, determining a quadratic polynomial representation of the impeller speed for the torque converter across the intersection region based on the empirical operation data for the torque converter, and utilizing the quadratic polynomial representation of the impeller speed for the torque converter across the intersection region for improved control of the powertrain.