Abstract: A system for monitoring tire tread on a vehicle may include front wheels, rear wheels, a sensor network to determine rolling radius data associated with the front wheels and the rear wheels, processing circuitry which may include a memory unit and may be configured to receive the rolling radius data from the sensor network, and a user interface which may display information to an operator of the vehicle. The processing circuitry may be further configured to determine a rolling radius of the front wheels and the rear wheels, determine a difference in the rolling radius between the front wheels and the rear wheels, compare the difference in the rolling radius to a predetermined threshold value, and generate a notification via the user interface to indicate that a tire rotation may be recommended responsive to the difference in the rolling radius exceeding the predetermined threshold value.

Abstract: Methods, apparatus, systems and articles of manufacture to calibrate a weight estimation are disclosed herein. An example apparatus comprises memory including stored instructions, and a processor to execute the instructions to determine, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load condition, determine, via a second sensor, a second load estimation corresponding to when the vehicle is moving and under the load condition, and calibrate, based on a difference between the second load estimation and the first load estimation, an error of the first load estimation.

Abstract: Solar power generation panels added on a transportation vehicle have a layout wherein power output of the panels varies according to an azimuth orientation of the vehicle. A controller includes a database of calibration curves relating an expected power output to a respective range of the azimuth orientation according to different solar altitude angles. A self-learning sequence is performed which (a) collects a magnitude of power output while the vehicle traverses the respective range of the azimuth orientation, (b) identifies a current solar altitude angle, and (c) stores a resulting calibration curve. A parking sequence comprises (a) selecting a calibration curve according to solar altitude angle, (b) determining a target vehicle azimuth angle which optimizes a cumulative power output based on the calibration curve and solar azimuth, and (d) initiating a movement of the vehicle to orient it at the target vehicle azimuth angle.

Abstract: Methods, apparatus, systems and articles of manufacture to calibrate a weight estimation are disclosed herein. An example apparatus comprises memory including stored instructions, and a processor to execute the instructions to determine, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load condition, determine, via a second sensor, a second load estimation corresponding to when the vehicle is moving and under the load condition, and calibrate, based on a difference between the second load estimation and the first load estimation, an error of the first load estimation.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to perform a tank turn. An example apparatus includes programmable circuitry to determine that a first brake associated with a first wheel is engaged and a second brake associated with a second wheel is engaged, the first wheel located on an end of a first axle of a vehicle, the second wheel located on an end of a second axle of the vehicle, the end of the first axle opposite to the end of the second axle, cause a first suspension to decrease a first suspension load of the first wheel, cause a second suspension to decrease a second suspension load of the second wheel, cause a first motor to drive the first axle in a first direction, and cause a second motor to drive the second axle in a second direction, the second direction different from the first direction.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to perform a tank turn. An example vehicle includes a first wheel and a second wheel, the first wheel located on an end of a first axle, the second wheel located on an end of a second axle, the end of the first axle opposite to the end of the second axle, a first suspension coupled to the first wheel, a second suspension coupled to the second wheel, and a controller to drive the first axle in a first direction, drive the second axle in a second direction, the first direction different from the second direction, and decrease a first suspension load of the first suspension and a second suspension load of the second suspension.

Abstract: Methods, apparatus, systems and articles of manufacture to calibrate a weight estimation are disclosed herein. An example apparatus comprises memory including stored instructions, and a processor to execute the instructions to determine, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load condition, determine, via a second sensor, a second load estimation corresponding to when the vehicle is moving and under the load condition, and calibrate, based on a difference between the second load estimation and the first load estimation, an error of the first load estimation.

Abstract: Systems and methods for improving accuracy of an amount of fuel injected to an engine are disclosed. In one example, a maximum fuel injector holding current value is adjusted from a higher value to a lower value within a predetermined amount of time of an end of fuel injection. By adjusting the maximum fuel injector holding current value, it may be possible to reduce variation in an amount of fuel that is injected via the fuel injector.

Abstract: Systems and methods for improving accuracy of an amount of fuel injected to an engine are disclosed. In one example, a maximum fuel injector holding current value is adjusted from a higher value to a lower value within a predetermined amount of time of an end of fuel injection. By adjusting the maximum fuel injector holding current value, it may be possible to reduce variation in an amount of fuel that is injected via the fuel injector.

Abstract: Methods and systems are provided for controlling power generation in a vehicle. In one example, the vehicle includes a controller coupled to an auxiliary device through a communication link, the auxiliary device drawing power from a generator at a power interface. Power supplied to the auxiliary device is regulated by the controller through signals transmitted over the communication link.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to perform a tank turn. An example vehicle includes a first wheel and a second wheel, the first wheel located on an end of a first axle, the second wheel located on an end of a second axle, the end of the first axle opposite to the end of the second axle, a first suspension coupled to the first wheel, a second suspension coupled to the second wheel, and a controller to drive the first axle in a first direction, drive the second axle in a second direction, the first direction different from the second direction, and decrease a first suspension load of the first suspension and a second suspension load of the second suspension.

Abstract: Methods and systems are provided for operating an electric motor to drive either a transmission fluid pump or a direct injection fuel pump. In one example, a method may include operating an electric motor to drive a direct injection fuel pump to supply fuel to a direct injection fuel rail while an engine of a start/stop vehicle is on, and operating the electric motor to drive an auxiliary transmission fluid pump to circulate transmission fluid to a transmission rotationally coupled to the engine while the engine is off during an auto-stop. In this way, the direct injection fuel pump may be electrically driven without increasing vehicle costs through adding an additional electric motor.

Abstract: Methods and systems are provided for an aftertreatment system. In one example, a system comprising a spark-ignited engine comprising a selective catalytic reduction device (SCR) arranged in an exhaust passage downstream of a catalyst, and an injector positioned to inject a reductant directly into the exhaust passage downstream of the catalyst subsequent an engine shut-off event.

Abstract: A vehicle charging system may include a charging plug including at least one handle cover covering at least a portion of the plug, and a vehicle charge receptacle configured to receive the plug, the plug and receptacle comprising a thermally conductive and electrically insulative material of at least one polymer and at least one ceramic to transfer heat generated during charging through the plug portion and receptacle into the vehicle body for dissipation.

Abstract: Methods and systems are provided for reducing a potential for release of undesired evaporative emissions to atmosphere for vehicles that rely primarily on an electric-only mode of operation for vehicle propulsion. In one example, a method may include in response to a vehicle-on request via a driver of a vehicle, maintaining off a fuel pump that supplies a fuel to a set of port fuel injectors, and re-pressurizing the set of port fuel injectors via operation of the fuel pump based on a predicted engine-start request during a drive cycle following the vehicle-on request. In this way, escape of fuel from pressurized port fuel injectors may be reduced or avoided during engine-off conditions, which may reduce opportunity for release of undesired evaporative emissions to atmosphere.

Abstract: Systems and methods for improving accuracy of an amount of fuel injected to an engine are disclosed. In one example, holding current of a fuel injector is adjusted to follow a fixed period and timing of a fuel injector off command is adjusted according to attributes of fuel injector holding current so that a fuel injector may provide a requested fuel amount. The fuel injector off command may be adjusted according to an amount of holding current that is expected to be flowing through the fuel injector at a time when the fuel injector is commanded off.

Abstract: Systems and methods for improving accuracy of an amount of fuel injected to an engine are disclosed. In one example, timing of a fuel injector off command is adjusted according to attributes of fuel injector holding current so that a fuel injector may provide a requested fuel amount. The fuel injector off command may be adjusted according to an amount of holding current that is expected to be flowing through the fuel injector at a time when the fuel injector is commanded off.

Abstract: Methods and systems are provided for an aftertreatment system. In one example, a system comprising a spark-ignited engine comprising a selective catalytic reduction device (SCR) arranged in an exhaust passage downstream of a catalyst, and an injector positioned to inject a reductant directly into the exhaust passage downstream of the catalyst subsequent an engine shut-off event.

Abstract: Methods and systems are provided for controlling power generation in a vehicle. In one example, the vehicle includes a controller coupled to an auxiliary device through a communication link, the auxiliary device drawing power from a generator at a power interface. Power supplied to the auxiliary device is regulated by the controller through signals transmitted over the communication link.

Abstract: Systems and methods for improving shifting of a transmission are described. The systems and methods may be applied to automatic or manual transmissions, but the systems and methods may be particularly suited for automatic transmissions. In one example, electrical input to an alternator and electrical output from the alternator is adjusted in response to a request to upshift a transmission.