Methods and systems are provided for diagnosing leaks/degradation in a fuel system. In one example, a system for a vehicle may comprise a variable volume device disposed within a fuel tank; an atmospheric port of the variable volume device fluidly coupled to a vent line upstream of a hydrocarbon sensor housed in the vent line, the vent line coupling a fuel vapor canister to atmosphere; and a controller storing instructions for monitoring output of the hydrocarbon sensor; and generating an indication of a degradation in the variable volume device based on the monitored hydrocarbon sensor. In this way, it is possible to effectively detect a degradation/leak in the variable volume device with minimal specialized components in the fuel system.

An image of the nearby surroundings of a user's vehicle is displayed, which includes images of the user's vehicle and threshold lines that define a range of distance from the user's vehicle. The image of the nearby surroundings of the user's vehicle is changed in accordance with a positional relationship between another vehicle and the range of distance.

A method of controlling gear shifting of a hybrid vehicle including an engine, a motor, and a stepped transmission includes predicting a requested torque reduction amount requested by the engine and the motor when there is a request to shift gears of the transmission, determining whether to realize the predicted requested torque reduction amount by reducing motor torque or applying counter torque, as a result of the determining, when it is not possible to realize the predicted requested torque reduction amount, determining an operating point correction amount for increasing an available torque reduction amount of the motor, and determining whether to perform first gear-shifting control in consideration of efficiency of the first gear-shifting control of increasing the motor torque and reducing engine torque by the operating point correction amount before an actual requested torque reduction amount is input.

A lane departure avoidance system disables start of steering control or terminate running steering control upon determination that a value of a at least one selected variation, which is selected from a first variation, a second variation, a third variation, and a fourth variation, is equal to or more than a corresponding threshold. The first variation is a variation of a lateral position of an own vehicle relative to lane marking lines recognized by a recognition unit, and the second variation is a variation of a yaw angle of the own vehicle relative to the recognized lane marking lines. The third variation is a variation of a curvature of the recognized lane marking lines, and the fourth variation is a variation of a pitch angle of the own vehicle.

A vehicle position detecting device according to an embodiment includes a wheel speed acquisition unit, a skid detection unit, a vehicle body speed calculation unit, and a position calculation unit. The wheel speed acquisition unit acquires a wheel speed of a wheel of a vehicle corresponding to rotation of the wheel. The skid detection unit detects a skid of the wheel. The vehicle body speed calculation unit calculates, when the skid is not detected by the skid detection unit, a vehicle body speed corresponding to the speed of a vehicle body of the vehicle based on the wheel speed acquired by the wheel speed acquisition unit, and corrects, in response to detection of the skid by the skid detection unit, the wheel speed acquired by the wheel speed acquisition unit based on correction information and calculates the vehicle body speed based on the corrected wheel speed. The position calculation unit calculates the position of the vehicle based on the vehicle body speed calculated by the vehicle body speed calculation unit depending on the presence of the skid.

A driving assistance system includes a driving readiness degree estimation unit configured to estimate a driving readiness degree relating to a driving consciousness of the driver based on the travel state of the vehicle or the driving operation of the vehicle by the driver and the traveling environment of the vehicle, a proportional gain calculation unit configured to calculate a proportional gain based on the driving readiness degree and the speed of the vehicle, and an assistance torque calculation unit configured to calculate the assistance torque according to a value obtained by multiplying a difference between the target steering angle and the actual steering angle by the proportional gain. If the speed is constant, the proportional gain calculation unit is configured to calculate the proportional gain as a smaller value as the driving readiness degree becomes lower.

A method for reinforcing safety of a vehicle on a ramp applied to a vehicle is performed by a first priority anti-skid countermeasure control in which a brake is operated together with displaying an occurrence of the skid of a vehicle/vehicle stop message on a ramp by a controller when the vehicle starts, a second priority anti-skid countermeasure control in which compensating an idle torque is performed together with displaying a guidance of anti-skid function operation/vehicle stop message is performed, a third priority anti-skid countermeasure control in which displaying a turn-off/vehicle stop message is performed, and a fourth priority anti-skid countermeasure control in which forcibly shifting to a N (neutral) stage or permitting the shift together with displaying a forcibly switching to the shift stage N stage/vehicle stop message is performed.

A vehicle includes a main motor for traveling and an electronic control unit that controls the main motor. The electronic control unit is configured to: extract, from time series data of a rotation speed of the main motor, vibration data in a predetermined frequency band that includes resonance frequency of a drive system that includes the main motor; lower an upper limit value of output torque of the main motor from a normal upper limit value to a first upper limit value lower than the normal upper limit value when magnitude of vibration obtained from the extracted vibration data exceeds a first threshold value; and lower the upper limit value of output torque of the main motor to a second upper limit value lower than the first upper limit value when the magnitude of the vibration exceeds a second threshold value larger than the first threshold value.

A vehicle includes a first axle have a first electric machine, a second axle having a second electric machine and a controller. The controller is programmed to, in a user-selected four-wheel drive mode, command a first torque to the first electric machine based on a driver-demanded torque and a speed of the second axle, and command a second torque to the second electric machine based on a comparison of the driver-demanded torque and the first torque and further based on a speed of the first axle.

An axle torque distribution system includes a memory and a control module. The memory stores a steering angle and a toque distribution algorithm. The control module executes the torque distribution algorithm to: obtain the steering angle; based on the steering angle, determine total lateral force requested for axles of a vehicle; based on the total lateral force requested, determine lateral forces requested for the axles while constraining lateral force distribution between the axles, where the constraining of the lateral force distribution includes, based on maximum lateral force capacities of tires of the vehicle, limiting the lateral forces requested for the axles; determine available longitudinal capacities for the axles based on the lateral forces requested respectively for the axles; determine torque capacities of the axles based on the lateral forces requested respectively for the axles; and control distribution of torque to the axles based on the torque capacities of the axles.