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 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.

Techniques for managing wheel slip in a through-the-road hybrid vehicle comprise detecting a front wheel slip event based on measured rotational speeds of front wheels, determining a likelihood of a subsequent rear wheel slip event, when the front wheel slip event has ended and the likelihood of the subsequent rear wheel slip event satisfies a calibratable threshold, adjusting a front/rear axle torque split and pre-loading at least one of an engine and a belt-driven starter generator (BSG) unit coupled to a crankshaft of the engine to compensate for a torque drop that is predicted to occur during the rear wheel slip event, and re-adjusting the front/rear axle torque split and pre-unloading at least one of the engine and the BSG unit such that a drop in torque output at a front axle aligns with an end of the rear wheel slip event.

The present invention relates to a brake control device and a brake control method for a vehicle comprising a plurality of brakes which are respectively installed on wheels, the brake control device comprising an auto leveling sensor which senses a load state of the vehicle according to a change in an angle; a control unit which calculates a correction value according to the load state of the vehicle sensed by the auto leveling sensor; and an electronic brake booster which corrects a predetermined braking power set according to a brake pedal force with the calculated correction value so that the braking operation of each brake is made.

A device for recognizing a width of a vehicle, including include a weight selecting device that selects at least one weight among a plurality of weights based on a degree of shaking of a present vehicle in a left and right direction and outputs the selected weight as selected weight information when a following vehicle overtakes the present vehicle, a vehicle width calculation device that calculates a vehicle width of the vehicle that has overtaken the present vehicle based on front region image information containing the vehicle that has overtaken the present vehicle, and outputs the calculation result as image vehicle width calculation information, and a weight applying device that applies the selected weight information to the image vehicle width calculation information and outputs the selected weight information-applied image vehicle width calculation information as vehicle width information.

An apparatus for controlling an active air flap (AAF) of a vehicle may include a plurality of sensors configured to detect status information of the vehicle; an opening degree controller configured to control an opening degree of the AAF; and a processor configured to determine a target flow and a target opening degree of the AAF based on the status information, calculate an initial speed of a wake generated by a preceding vehicle based on vehicle information of the preceding vehicle, obtain a speed of the wake when the wake arrives the vehicle based on a speed of the vehicle, an inter-vehicle distance between the vehicle and the preceding vehicle, and the initial speed of the wake, correct the target opening degree based on the speed of the wake, and adjust the opening degree of the AAF corresponding to the corrected target opening degree.

A system includes a differential, sensors, and a controller. The differential is operable in a first differential mode in which a first shaft and a second shaft are allowed to rotate at different speeds, and a second differential mode in which the differential inhibits relative rotation between the first and second shafts. The sensors are configured to measure vehicle operating conditions. The controller is in communication with the sensors and the differential. The controller, when the vehicle mode is selected, is configured to determine if an intended path of the vehicle is straight, determine if a vehicle speed is less than a predetermined vehicle speed, and operate the differential in the second differential mode for a predetermined time period in response to the controller determining that the intended path of the vehicle is straight and the vehicle speed is less than the predetermined vehicle speed.

An apparatus for controlling an active air flap (AAF) of a vehicle may include a plurality of sensors configured to detect status information of the vehicle; an opening degree controller configured to control an opening degree of the AAF; and a processor configured to determine a target flow and a target opening degree of the AAF based on the status information, calculate an initial speed of a wake generated by a preceding vehicle based on vehicle information of the preceding vehicle, obtain a speed of the wake when the wake arrives the vehicle based on a speed of the vehicle, an inter-vehicle distance between the vehicle and the preceding vehicle, and the initial speed of the wake, correct the target opening degree based on the speed of the wake, and adjust the opening degree of the AAF corresponding to the corrected target opening degree.

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.

A magnet temperature estimating device for a motor provided with a rotor having magnets and configured to output a rotational motive force, and a stator having a plurality of coils opposing the rotor with an aperture therebetween, is provided. The device includes a sensor configured to detect an induced voltage induced by rotation of the rotor, and a controller configured to control the motor by supplying power to the plurality of coils in response to an input of a detection signal from the sensor. The controller estimates a temperature of one of the magnets based on an amplitude of a frequency spectrum corresponding to a given frequency, among frequency components constituting the induced voltage.