Abstract: The present invention relates to a VOC reduction system and a VOC reduction method that applies pulse type thermal energy to a catalyst to activate the catalyst and oxidizes and removes the VOC.

Abstract: A method includes switching a vehicle to a 4WD state by connecting a disconnector, maintaining the disconnector in the connected state for a predetermined maintenance time, determining whether a condition to be switched to a 2WD state is satisfied when the predetermined maintenance time period elapses, and disconnecting the disconnector when the condition to be switched to the 2WD state is satisfied.

Abstract: A method includes switching a vehicle to a 4WD state by connecting a disconnector, maintaining the disconnector in the connected state for a predetermined maintenance time, determining whether a condition to be switched to a 2WD state is satisfied when the predetermined maintenance time period elapses, and disconnecting the disconnector when the condition to be switched to the 2WD state is satisfied.

Abstract: A system of controlling a vehicle may include a sensor and a controller, in which the sensor may be configured to sense vehicle operation state information, and the controller may be configured to determine whether a vehicle is running on a dangerous road based on the sensed vehicle operation state information, determine whether there is a possibility that a vehicle driving state will cause a failure of a driving system based on the sensed vehicle operation state information in response to determining that the vehicle is running on the dangerous road, and decide that torque control of the vehicle.

Abstract: In a torque distribution method for a vehicle, torque is optimally distributed to front and rear wheels of a vehicle by reflecting pitch motion characteristics and longitudinal load movement information of the vehicle in real time. The repetition of wheel slip and the degradation of wheel slip control performance caused by the pitch motion are reduced. The longitudinal load movement of the vehicle is reduced.

Abstract: A driving torque command generating apparatus and method of operating a hybrid electric vehicle can obtain torsional state observation values using an engine speed, a motor speed, and a wheel speed detected by an engine speed detector, a motor speed detector, and a wheel speed detector, respectively, together with a motor torque command generated in a previous period, and generate an engine torque command and a motor torque command of a driving torque command based on a driving input value input by a driving input detector and the torsional state observation values.

Abstract: The present disclosure provides a method of controlling braking of an electric vehicle in which friction braking force generated by a friction braking unit is applied to front wheels and regenerative braking force generated by a motor is applied to rear wheels includes: determining driver's request braking force by a controller based on a driver's braking-input value; detecting driving information and state information of the vehicle by a detection unit; and determining a braking mode of the vehicle that satisfies the driver's request braking force by the controller based on the detected information and information of running state of the vehicle obtained from the detected information. In addition, the present disclosure provides a system of controlling braking of an electric vehicle.

Abstract: An auto cruise control method for a hybrid electric vehicle is provided. The auto cruise control method maximizes an effect of enhancing fuel efficiency and simultaneously satisfies enhancement in driveability and fuel efficiency due to the application of a pulse and glide (PnG) pattern obtained by considering the characteristics of the hybrid electric vehicle (HEV). The method includes receiving a target vehicle speed by a driver input to turn on an auto cruise mode and to turn on a pulse and glide (PnG) mode in a hybrid electric vehicle using an engine and a driving motor as vehicle driving sources. One PnG mode among a PnG coast mode, a PnG glide mode, and a PnG cruise control mode are selected from a map based on the target vehicle speed and driving control of the selected PnG mode is then performed.

Abstract: A braking control system and a method for an eco-friendly vehicle are provided to resolve discrepancy in braking force occurring during switching between hydraulic braking and regenerative braking. The system includes a deceleration determiner that determines target and actual decelerations of the vehicle based on collected information when braking and a torque calculator that calculates target and actual deceleration torques from the determined target and actual decelerations of the vehicle using vehicle equivalent inertia information. An error calculator calculates a torque error and a torque corrector corrects a pre-correction target regenerative braking torque by the calculated torque error and calculates a post-correction target regenerative braking torque. A motor controller adjusts a regenerative braking torque of a motor according to the calculated post-correction target regenerative braking torque.

Abstract: A driving torque command generating apparatus and method of operating a hybrid electric vehicle can obtain torsional state observation values using an engine speed, a motor speed, and a wheel speed detected by an engine speed detector, a motor speed detector, and a wheel speed detector, respectively, together with a motor torque command generated in a previous period, and generate an engine torque command and a motor torque command of a driving torque command based on a driving input value input by a driving input detector and the torsional state observation values.

Abstract: An auto cruise control method and system for hybrid electric vehicles are provided. Particularly, a PnG driving pattern in consideration of characteristics of hybrid electric vehicles is applied to maximize improvement in fuel efficiency and to satisfy both drivability and improvement in fuel efficiency. The auto cruise control method includes turning on an auto cruise control mode by receiving a user set target vehicle speed using an engine and a driving motor as vehicle driving sources, and turning on a pulse and glide (PnG) mode. A user interface (UI) device is provided to receive a selection of any one of a PnG coast mode, a PnG glide mode and a PnG constant-speed cruise mode, and, when the driver selects one mode through the UI device, the hybrid electric vehicle is operated in the selected mode.

Abstract: The present disclosure provides an apparatus for controlling distribution of torque of front and rear wheel of a four-wheel drive (4WD) vehicle, including: a slip control torque calculator configured to calculate slip control torque of the rear wheels from information collected from the vehicle during driving in a 4WD mode; a handling control torque calculator configured to calculate handling control torque for the rear wheels from information collected from the vehicle during driving in the 4WD mode; a weighting factor determiner configured to determine a slip control weighting factor and a handling control weighting factor based on vehicle state information; and a target torque calculator configured to calculate target torque of rear wheel by summing the weighting factors applied to the slip control torque and handling control torque, respectively, wherein the target torque of the rear wheel is a target value of the torque distributed to the real wheel.

Abstract: An apparatus and method for accurately estimating the transfer torque of an engine clutch provided between an engine and a motor in a hybrid electric vehicle, may include a forward estimation device configured for determining a first estimate of engine clutch transfer torque using engine torque information, a reverse estimation device configured for determining a second estimate of the engine clutch transfer torque using a drive system model including wheels, a transmission, and a motor and using wheel speed information, a weight determination device configured for determining a weight based on brake input by a driver and whether predetermined devices in the vehicle are operated, and an estimate combination determination device configured for determining a final estimate of the engine clutch transfer torque as a value combined by applying a weight to the determined first estimate and the determined second estimate.

Abstract: A braking control system and a method for an eco-friendly vehicle are provided to resolve discrepancy in braking force occurring during switching between hydraulic braking and regenerative braking. The system includes a deceleration determiner that determines target and actual decelerations of the vehicle based on collected information when braking and a torque calculator that calculates target and actual deceleration torques from the determined target and actual decelerations of the vehicle using vehicle equivalent inertia information. An error calculator calculates a torque error and a torque corrector corrects a pre-correction target regenerative braking torque by the calculated torque error and calculates a post-correction target regenerative braking torque. A motor controller adjusts a regenerative braking torque of a motor according to the calculated post-correction target regenerative braking torque.

Abstract: An apparatus and method for accurately estimating the transfer torque of an engine clutch provided between an engine and a motor in a hybrid electric vehicle, may include a forward estimation device configured for determining a first estimate of engine clutch transfer torque using engine torque information, a reverse estimation device configured for determining a second estimate of the engine clutch transfer torque using a drive system model including wheels, a transmission, and a motor and using wheel speed information, a weight determination device configured for determining a weight based on brake input by a driver and whether predetermined devices in the vehicle are operated, and an estimate combination determination device configured for determining a final estimate of the engine clutch transfer torque as a value combined by applying a weight to the determined first estimate and the determined second estimate.

Abstract: A non-uniform displacement engine control system having a transient state control mode includes a non-uniform displacement engine including a plurality of cylinders, the cylinders including at least two sizes of cylinders having different displacements, a motor connected to a driving shaft of the engine, a battery for supplying electrical energy to the motor, and a motor control unit for controlling the motor, wherein the motor control unit controls the motor such that a sum of engine torque and motor torque in explosion strokes of each cylinder is uniform by compensating for a difference in torque caused by the cylinders having different displacements, and the motor control unit has a transient state control mode for additionally applying offset torque to predetermined motor torque at a time of rapid acceleration or rapid deceleration.

Abstract: A non-uniform displacement engine control system with different control modes based on a state of charge (SOC) of a battery, the system includes a non-uniform displacement engine including a plurality of cylinders, the cylinders comprising at least two sizes of cylinders having different displacements, a motor connected to a driving shaft of the engine, a battery for supplying electrical energy to the motor, and a motor control device for controlling the motor, wherein the motor control device controls the motor to compensate for a difference in torque due to different displacements of the cylinders such that a sum of engine torque and motor torque in explosion stroke of each cylinder is uniform, and the motor control device has a charge intention mode or a discharge intention mode based on the SOC of the battery.

Abstract: The present disclosure provides an apparatus for controlling distribution of torque of front and rear wheel of a four-wheel drive (4WD) vehicle, including: a slip control torque calculator configured to calculate slip control torque of the rear wheels from information collected from the vehicle during driving in a 4WD mode; a handling control torque calculator configured to calculate handling control torque for the rear wheels from information collected from the vehicle during driving in the 4WD mode; a weighting factor determiner configured to determine a slip control weighting factor and a handling control weighting factor based on vehicle state information; and a target torque calculator configured to calculate target torque of rear wheel by summing the weighting factors applied to the slip control torque and handling control torque, respectively, wherein the target torque of the rear wheel is a target value of the torque distributed to the real wheel.

Abstract: An auto cruise control method for a hybrid electric vehicle is provided. The auto cruise control method maximizes an effect of enhancing fuel efficiency and simultaneously satisfies enhancement in driveability and fuel efficiency due to the application of a pulse and glide (PnG) pattern obtained by considering the characteristics of the hybrid electric vehicle (HEV). The method includes receiving a target vehicle speed by a driver input to turn on an auto cruise mode and to turn on a pulse and glide (PnG) mode in a hybrid electric vehicle using an engine and a driving motor as vehicle driving sources. One PnG mode among a PnG coast mode, a PnG glide mode, and a PnG cruise control mode are selected from a map based on the target vehicle speed and driving control of the selected PnG mode is then performed.

Abstract: The present disclosure provides a method of controlling braking of an electric vehicle in which friction braking force generated by a friction braking unit is applied to front wheels and regenerative braking force generated by a motor is applied to rear wheels includes: determining driver's request braking force by a controller based on a driver's braking-input value; detecting driving information and state information of the vehicle by a detection unit; and determining a braking mode of the vehicle that satisfies the driver's request braking force by the controller based on the detected information and information of running state of the vehicle obtained from the detected information. In addition, the present disclosure provides a system of controlling braking of an electric vehicle.