Patents Assigned to HYUNDAI KEFICO CORPORATION
  • Patent number: 12179725
    Abstract: A system and a method for vehicle stop control are operable such that when it is detected that a vehicle is driving in a direction opposite to the direction of a current gear stage of the vehicle, the driver is warned and the vehicle enters an emergency braking state so as to reduce the risk of an accident and improve stability of a braking system. The vehicle stop control method performed by a controller of the vehicle includes steps of: converting vehicle driving environment information into data to be used as system input information; checking whether a controller related to each of driving and braking systems of the vehicle operates normally; determining whether the vehicle is driving in a reverse direction; and performing vehicle emergency stop control when the vehicle is driving in the reverse direction.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: December 31, 2024
    Assignee: Hyundai Kefico Corporation
    Inventor: Jae-Hoon Byeon
  • Patent number: 12157449
    Abstract: A system for predicting a negative pressure of a brake booster of a vehicle includes: a driving information detector detecting driving information related to driving of the vehicle; and a controller determining a negative pressure of an intake manifold based on a pressure of the intake manifold and an atmospheric pressure which is the driving information and including a booster negative pressure predictor predicting the negative pressure of the brake booster by integrating over time a change rate according to a charging rate and a discharging rate of the negative pressure determined using a negative pressure of the brake booster determined in a previous cycle according to a logic for predicting the negative pressure of the brake booster and the negative pressure of the intake manifold of a current cycle and an imitated brake pedal force signal of the current cycle imitating an acceleration of the vehicle.
    Type: Grant
    Filed: November 14, 2023
    Date of Patent: December 3, 2024
    Assignees: Hyundai Motor Company, Kia Corporation, Hyundai Kefico Corporation
    Inventors: Tae Hun Jung, Hyun Sung Park, Young-Jin Kim
  • Patent number: 12072024
    Abstract: A method of controlling engine torque according to transmission hydraulic pressure is performed by an engine torque control system of a vehicle. The method includes connecting an engine torque converter to an engine and an automatic transmission of the vehicle, calculating a required turbine torque after confirming an engine torque control condition, deriving and storing a value of turbine torque factor learning through turbine torque factor learning according to shift type and shift time, converting the stored value of turbine torque factor learning into an engine torque control value, and requesting the engine torque control value to be applied to engine output, by an engine torque controller during shifting of the automatic transmission, so that a new turbine torque calculation is performed through a hydraulic pressure reference at the beginning of physical shifting, thereby preventing a shift shock and transmission damage caused by unreasonably excessive or insufficient engine torque.
    Type: Grant
    Filed: April 26, 2023
    Date of Patent: August 27, 2024
    Assignee: Hyundai Kefico Corporation
    Inventors: Nam-Hoon Kim, Sung-Hyun Park, Se-Hoon Son, John-Ha Lee
  • Patent number: 12024031
    Abstract: A method of controlling an electric power supply system for a mild hybrid electric vehicle includes: a step of executing a sequence for turning on the electric power supply system, wherein when an ignition key is turned on, a voltage of the low voltage battery is boosted and in which, when the voltage of the high voltage power network reaches a preset setting voltage, the high voltage relay is closed; a step of causing the vehicle to travel in a normal mode; a step of limiting entering of a failure mode and checking a connected state of the high voltage relay when a voltage drop occurs; and a step of performing again the sequence, when the high voltage relay is opened, and of resuming the traveling of the vehicle in the normal mode when the high voltage relay keeps closed.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: July 2, 2024
    Assignee: HYUNDAI KEFICO CORPORATION
    Inventor: Byung Chun Jeon
  • Patent number: 12007302
    Abstract: A gas sensor includes a housing having an open portion at one side of the housing, a circuit board securely provided inside the housing, the circuit board defining a gas sensing space in the housing that communicates with the open portion of the housing, the circuit board having a sensing element located in the gas sensing space and configured to sense a specific gas, a holder provided inside the gas sensing space, and fixed to the housing, the holder having a through hole communicating with the open portion of the housing, and a filter provided inside the gas sensing space, and coupled to the holder or the housing so as to cover the through hole or the open portion.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: June 11, 2024
    Assignee: Hyundai Kefico Corporation
    Inventors: Seung Tae Lee, Dae Gun Lee, Kyeong Hyeon Kim
  • Patent number: 11993251
    Abstract: A method and system for controlling an engine clutch of a P2 type parallel hybrid vehicle includes steps of: determining whether or not a learning mode entry condition is satisfied, depending on whether or not a kickdown shift occurs during performance of variable hydraulic control of an engine clutch and based on the degree to which slip of the engine clutch occurs, deriving and storing a learning hydraulic value for suppressing the slip that is to occur when the kickdown shift occurs during the performance of the variable hydraulic control in such a manner that the slip does not occur, when a vehicle state satisfies a predetermined learning mode entry condition, and computing a final hydraulic pressure by adding a hydraulic compensation value to a target hydraulic pressure, when the same kickdown shift situation occurs, and controlling the engine clutch using the computed final hydraulic pressure.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: May 28, 2024
    Assignee: Hyundai Kefico Corporation
    Inventors: Jun-Hyung Lee, Jung-Mook Choo, Young-Ho Jun, Hyun-Ki Shin, Hyung-Jin Shin
  • Patent number: 11965475
    Abstract: An assembly for a fuel injector includes a base material, a coated region formed on a surface of the base material, an uncoated region formed on a surface of the base material, in contact with and supported by a jig, and formed to be partitioned from the coated region so as to prevent the coated region from peeling off during laser welding, and a coating material stacked in a multilayer structure on the coated region. As a result, friction reduction, high hardness, impact resistance, heat resistance, and durability of the assembly may be improved, and a portion requiring the coating may be precisely coated.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: April 23, 2024
    Assignee: Hyundai Kefico Corporation
    Inventors: Heonjoon Park, Sungchul Cha
  • Patent number: 11962196
    Abstract: A rotor for a motor is proposed, the rotor including: a magnet coupled to a shaft to surround an outer surface of the shaft and having opposite-polar magnetic portions circumferentially alternately arranged; a first fixed ring fixed to the shaft to surround an outer surface of the shaft, disposed in contact with an upper portion of the magnet, and having a first coupling portion at a lower end being in contact with a top of the magnet to prevent rotation relative to the magnet; and a second fixed ring fixed to the shaft to surround the outer surface of the shaft, disposed in contact with a lower portion of the magnet, and having a second coupling portion at an upper end being in contact with a bottom of the magnet to prevent rotation relative to the magnet.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: April 16, 2024
    Assignee: Hyundai Kefico Corporation
    Inventor: Ahn Hee Lee
  • Patent number: 11926297
    Abstract: A system for predicting a negative pressure of a brake booster of a vehicle includes: a driving information detector configured to detect driving information according to driving of the vehicle; and a controller configured to calculate a negative pressure of an intake manifold based on a pressure of the intake manifold and an atmospheric pressure that is the driving information and including a booster negative pressure predictor configured to predict the negative pressure of the brake booster by integrating over time a change rate according to a charging rate and a discharging rate of the negative pressure calculated using a previous negative pressure of the brake booster calculated in a previous cycle according to a logic for predicting the negative pressure of the brake booster and the negative pressure of the intake manifold and a brake pedal force of a current cycle.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: March 12, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, HYUNDAI KEFICO CORPORATION
    Inventors: Tae Hun Jung, Young-Jin Kim
  • Patent number: 11913566
    Abstract: The present disclosure relates to a fuel tank isolation valve of a vehicle, wherein the first armature and the second armature are connected in such a manner that there is no clearance therebetween, and a spring compression amount securing groove is formed on the upper surface of the guide. In a preferred finished valve assembly state, the position of the first armature in a valve-off state can be constant, and the movement of the first armature does not significantly occur, thereby noise, vibration, and wear are inhibited or prevented.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: February 27, 2024
    Assignee: Hyundai Kefico Corporation
    Inventor: Du Seok Lee
  • Patent number: 11889628
    Abstract: Disclosed is an electronic control device using a connector-integrated housing and a bendable printed circuit board. The electronic control device according to an exemplary embodiment of the present invention includes: a housing including a first body formed with an opening at one side and a second body connected with the first body through a hinge part, the opening being closed according to a rotation of the second body; a printed circuit board including a first substrate part and a second substrate part connected through a flexible connection part; and a connector coupled to the second body, in which the first substrate part is inserted into the first body, and the second substrate part is coupled with the connector to be connected with the second body.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: January 30, 2024
    Assignee: Hyundai Kefico Corporation
    Inventor: Wankyu Lee
  • Patent number: 11873777
    Abstract: A start-up method of a mild hybrid system determines whether start-up is attempted through an MHSG in accordance with a request for start-up from a driver, compares an engine rpm at the end of cranking with a reference rpm in start-up using the MHSG, determines whether an engine rpm immediately after start-up follows an idle target rpm when the engine rpm at the end of cranking exceeds the reference rpm, checks whether there is an error in a cam angle sensor when poor following in which the engine rpm immediately after start-up does not follow the idle target rpm is generated, forcibly changes an engine state into cranking when the cam angle sensor has an error, and executes an existing backup crank logic that decreases a target rpm of the MHSG and finds out a fuel injection time while performing test injection using a signal from an crank angle sensor.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: January 16, 2024
    Assignee: Hyundai Kefico Corporation
    Inventor: Dong Uk Oh
  • Patent number: 11872990
    Abstract: A method and system for controlling clutch friction elements of an automatic transmission is provided. The method includes retrieving information about shift clutches from a data storage unit and acquiring information required to predict a temperature of a friction element for each shift clutch, deriving a predicted temperature value of a friction element for each shift clutch by using the information about the shift clutches and the information required to predict the temperature of the friction element, predicting whether or not overheating occurs for each shift clutch by comparing the derived predicted temperature value of the friction element for each shift clutch with an allowable temperature set for each shift clutch, and determining a target shift stage while avoiding the overheating clutch with a predicted temperature value exceeding the allowable temperature, through switching to an avoidance shift mode.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: January 16, 2024
    Assignee: Hyundai Kefico Corporation
    Inventors: Sung-Hyun Park, Se-Hoon Son, John-Ha Lee, Nam-Hoon Kim
  • Patent number: 11851039
    Abstract: A system for predicting a negative pressure of a brake booster of a vehicle includes: a driving information detector detecting driving information related to driving of the vehicle; and a controller determining a negative pressure of an intake manifold based on a pressure of the intake manifold and an atmospheric pressure which is the driving information and including a booster negative pressure predictor predicting the negative pressure of the brake booster by integrating over time a change rate according to a charging rate and a discharging rate of the negative pressure determined using a negative pressure of the brake booster determined in a previous cycle according to a logic for predicting the negative pressure of the brake booster and the negative pressure of the intake manifold of a current cycle and an imitated brake pedal force signal of the current cycle imitating an acceleration of the vehicle.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: December 26, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Hyundai Kefico Corporation
    Inventors: Tae Hun Jung, Hyun Sung Park, Young-Jin Kim
  • Patent number: 11852154
    Abstract: A centrifugal pump sealing structure is provided. In one aspect, one sealing member is provided at a position where leakage paths from a fluid compression space between a middle housing and a cover and an electric component installation space between the middle housing and a lower housing are connected. Then, the two spaces are sealed. The number of sealing members is reduced, so that the internal structure becomes simpler and the assembly of the sealing member becomes easier.
    Type: Grant
    Filed: September 7, 2022
    Date of Patent: December 26, 2023
    Assignee: Hyundai Kefico Corporation
    Inventor: Ahn Hee Lee
  • Patent number: 11821391
    Abstract: A noise reduction type purge control solenoid valve includes a body including a connector that supplies electricity from the exterior; a cover coupled to the body having a fluid inlet and a fluid outlet, and formed with a fluid discharge passage connected to the fluid outlet therein; a solenoid component disposed in the body; and an armature disposed between the solenoid component and the fluid discharge passage and moving upward and downward by the solenoid component to open and close the fluid discharge passage. Further, a noise reduction member is mounted on the armature to reduce noise generated by contact between the fluid discharge passage and the armature. A noise reduction wall protrudes along a circumference of an upper surface of the noise reduction member.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: November 21, 2023
    Assignee: Hyundai Kefico Corporation
    Inventor: Ahn Hee Lee
  • Patent number: 11754176
    Abstract: In one aspect, a control method and a control apparatus are provided for protecting a damper clutch of a vehicle. In one aspect, the control method of protecting the damper clutch of the vehicle includes determining whether a vehicle state satisfies a condition for operating a damper clutch protection logic, calculating a slip power in real time on the basis of a turbine speed of a torque converter, an engine speed, a capacity coefficient of the torque converter, a clutch torque, and a hydraulic torque when the condition for operating the damper clutch protection logic is satisfied, determining whether a repetitive tip-in/tip-out that is intentionally performed occurs or not on the basis of a change in the slip power that is calculated in real time for a set time, and operating the damper clutch protection logic for restraining a slip of the damper clutch when there is the repetitive tip-in/tip-out that is intentionally performed.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: September 12, 2023
    Assignee: Hyundai Kefico Corporation
    Inventors: Sung-Hyun Park, Se-Hoon Son, John-Ha Lee, Nam-Hoon Kim
  • Patent number: 11754009
    Abstract: Proposed is a method and system for controlling an Exhaust Gas Recirculation (EGR) device in high-load driving, and an internal combustion engine vehicle including the system. The method of controlling an EGR device in high-load driving compares a ratio of pressures at a front end and a rear end of a throttle valve with a preset critical value that is a reference for determining high-load driving, performs Wide Open Throttle (WOT) control for fully opening the throttle valve when the ratio of pressures is larger than the preset critical value, determines whether engine torque due to the WOT control and use of EGR satisfies torque requested by a driver, and corrects throttle opening or stops use of EGR, depending on whether the engine torque due to use of EGR together with the WOT control satisfies the requested torque.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: September 12, 2023
    Assignee: Hyundai Kefico Corporation
    Inventor: Ju-Hyun Park
  • Patent number: 11724684
    Abstract: A control apparatus for controlling a vehicle includes a driving motor configured to drive the vehicle by outputting motor torque based on a supply voltage from a battery, and an engine configured to drive the vehicle by outputting engine torque. The control apparatus may acquire driving mode data which is calculated based on traffic information from the current position to the destination of the vehicle and dimension information of the vehicle, and control the vehicle to drive to the destination according to a driving mode which is determined by applying a travelling condition of the vehicle to the acquired driving mode data, where the power distribution ratio of the motor torque to the engine torque is reflected in the driving mode data.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: August 15, 2023
    Assignee: Hyundai Kefico Corporation
    Inventors: Young-Ho Jun, Hyun-Ki Shin, Hyung-Jin Shin, Jun-Hyung Lee, Jung-Mook Choo
  • Patent number: 11703122
    Abstract: A motor sticking diagnosis and repair method includes the steps of, when an operation of a shift lever is detected, determining whether a current position matches a target position, when the current position does not match the target position, rotating the motor toward the target position, determining once again whether the current position matches the target position after rotation of the motor, when the current position does not match the target position, diagnosing whether the motor sticking has occurred, when the motor is diagnosed as being stuck, allowing the motor to switch to a free-rotation mode by temporarily blocking the current being applied to the motor upon sticking diagnosis, and selecting either a first repair strategy or a second repair strategy depending on whether the position of the motor changes after switching to the free-rotation mode.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: July 18, 2023
    Assignee: Hyundai Kefico Corporation
    Inventor: Ji-Hyeok Kang